gfi - User contributions [en]

Using cyclone

2026-04-17T10:02:54Z

Anmar5059: Updated required modules for Dynlib

== Connection and first steps ==
Requirements: To access GFI&SKD department servers via ssh, your computer will need to be attached to UiB-network. Connection via ssh is also open from Sigma2 resources, and sshfs is available to/from Sigma2. Otherwise, connecting from outside UiB or from private platform, you will need UiB-vpn or login via UiB login server. And your UiB account will need to be enabled for connection.

Use ssh to connect to one of the cyclones systems, cyclone1, cyclone2 and cyclone3, respectively:
<pre>ssh -Y <username>@cyclone1.gfi.uib.no
ssh -Y <username>@cyclone2.gfi.uib.no
ssh -Y <username>@cyclone3.gfi.uib.no - (cyclone3 is reserved for GPU usage only)</pre>
or just simply:
<pre>ssh -Y cyclone1.gfi.uib.no
ssh -Y cyclone2.gfi.uib.no
ssh -Y cyclone3.gfi.uib.no - (cyclone3 is reserved for GPU usage only)
</pre>
if you're connecting from a computer where you are logged in under the same user name (as usually the case with your UiB machine). When you are connecting for the first time, you will be asked to verify a signature. Reply "yes" to this question.

=== Home directories ===

All servers <code>cyclone*.gfi.uib.no</code> share same home directories. These home directories are separate from your standard UiB home directory. The content of your home directories will not be synced, so you will manually need to transfer your scripts to the new system.

Please be aware that your local home directory is not expected to exceed 30GB at any time - even in periods when sys.adms. do not practice quotas. If you need to store larger amount of data, please plan for using the GFI&SKD storage - also described in this wiki.

To monitor your home directory size, you can use these commands from cyclone command shell:

<code>du -sh ~/ </code>

Or to include more details on both dot files/directories and non-hidden home directory subfolders:

<code>cd; du -sh .[^.]* *</code>

=== How to access software ===

Most/all scientific software is only available through EESSI software modules. Modules need to be loaded manually before the respective software can be used. We use software modules, because they provide are a clean and handy way to offer conflicting software or software versions: Instead of updating software and potentially breaking user scripts and programs new software is then made available in parallel to those that require it.

=== Start-up scripts ===

It might be handy to automatically load modules for software that you use frequently every time you login to cyclone. To accomplish that for bash, there are two relevant files, <code>$HOME/.bashrc</code> and <code>$HOME/.bash_profile</code> . <code>.bash_profile</code> should contain things that need to be defined at login time only, like <code>PATH</code> and other environment variables, startup programs, etc. You just need things once, not in every shell you open. In most cases, you also need the things from <code>.bashrc</code> in your login shell. That's why <code>.bash_profile</code> sources <code>.bashrc</code> as well, but .bashrc doesn't usually source <code>.bash_profile</code>. In contrast, <code>.bashrc</code> should typically contain things you want to set in every shell you open, like aliases, functions, etc. These are per shell session items that are not inherited from environment ([https://unix.stackexchange.com/questions/346336/why-have-both-bash-profile-and-bashrc source and detailed explanation]).

==== An example <code>.bash_profile</code> for inspiration ====

<pre>module load CDO/2.2.2-gompi-2023b
module load MATLAB/2023a

alias rm="rm -i"
alias cp="cp -i"
alias erai="cd /Data/skd/share/Reanalysis/ERA_INTERIM/6HOURLY/"

if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi</pre>

==== An example <code>.bashrc</code> for inspiration ====

<pre>alias rm="rm -i"
alias cp="cp -i"
alias erai="cd /Data/skd/share/Reanalysis/ERA_INTERIM/6HOURLY/"</pre>

== Available software ==

Below is a list of frequently used software and which module to load on the new cyclone. Relevant module names are printed like for <code>MATLAB/2023a</code>. Modules can be loaded by <code>module load <module name></code>, and unloaded <code>module unload <module name></code>. [[Using modules on cyclone|More details on the module system]].

To list all available modules, use the command
<pre>module avail</pre>

All packages listed with this command should work, so please report to <code>support@hpc.uib.no</code> if they do not.

=== Data analysis and plotting ===

* CDO
*: <code>CDO</code>, <code>CDO/2.2.2-gompi-2023</code>
* Dynlib
*: See temporary solution for python. Requires in addition <code>OpenBLAS/0.3.24-GCC-13.2.0</code>, <code>ScaLAPACK/2.2.0-gompi-2023b-fb</code>, <code>PROJ/9.3.1-GCCcore-13.2.0</code>, and <code>GEOS/3.12.1-GCC-13.2.0</code>
* ghostview
*: ''<no module required>''
* grads
*: ''<no module required>''
* Matlab
*: <code>Matlab</code>, <code>Matlab/2023a</code>, <code>Matlab/2021b</code>
* ncdump and other netCDF utilities
*: <code>netCDF</code>, <code>netCDF/4.9.2-gompi-2023b</code>
* PanoplyJ module is currently not working, rather use this alias for starting Panoply 5.9.1
*:alias panoply='/vol/vb_apps/software/PanoplyJ/5.9.1-Java-25.36/panoply.sh'
*:For MacBook users it may be necessary tor run this XQuarts config via terminal (while XQuarts completely off):
*:defaults write org.xquartz.X11 enable_render_extension 0
* NCL module is currently not working, rather use the alias below for NCL 6.6.2:
*: <code>NCL</code>, <code>NCL/6.5.0</code>
*:alias ncl-activate='conda activate /Data/gfi/users/local/share/envs/ncl_stable'
* nco
*: <code>NCO</code>, <code>NCO/5.1.9-foss-2023a</code>
* ncview
*: <code>ncview</code>, <code>ncview/2.1.8-gompi-2023a</code>. Load only when needed! The package is currently known to break some GUI programs like gedit and gvim.
* python, plus selection of scientific packages
*: ''First'' choose and load the python module for the python version that you want to use, either <code>Python/3.11.5-GCCcore-13.2.0</code> for python 3.11.5, or <code>Python/2.7.18-GCCcore-12.2.0-bare</code> for python 2.7.18.
*: ''Then'', as a temporary solution, many scientific python packages are installed in the following virtual environments:
*: <code>source /Data/gfi/users/local/share/virtualenv/dynpie2/bin/activate</code> for python 2.7.15.
*: <code>source /Data/gfi/users/local/share/virtualenv/dynpie3-2021a/bin/activate</code> for python 3.7.0.
*: For the pygrib module, <code>ecCodes/2.7.3-foss-2018b</code> is required in addition.
* R
*: <code>R , R/4.4.1-gfbf-2023b</code>

=== Text editors ===

* emacs, gedit, gvim, vi(m), nedit, meld, spyder (Spyder comes available when Anaconda module loaded)
*: All installed globally

=== Compilers and libraries ===

* blas
*: <code>OpenBLAS/0.3.1-GCC-7.3.0-2.30</code>. '''Note''': The library is called <code>libopenblas</code>, so you'll need to compile with <code>-lopenblas</code>.
* eccodes (replacement for grib_api)
*: <code>ecCodes</code>, <code>ecCodes/2.31.0-gompi-2023b</code>
* gcc, gfortran
*: <code>GCC</code>, <code>GCC/13.2.0</code>
* grib_api
*: <code>grib_api/1.24.0-foss-2018b</code>
* HDF5 libraries
*: <code>HDF5/1.14.3-gompi-2023b</code>
* lapack
*: <code>ScaLAPACK</code>, <code>ScaLAPACK/ScaLAPACK/2.2.0-gompi-2023b-fb</code>. '''Note''': The library is called <code>libscalapack</code>, so you'll need to compile with <code>-lscalapack</code>.
* MPI
*: <code>OpenMPI/4.1.6-GCC-13.2.0</code>
* netcdf
*: For C-libaries:<code>netCDF</code>, <code>netCDF/4.9.2-gompi-2023b</code>,
*: For Fortran-libraries <code>netCDF-Fortran/4.6.1-gompi-2023b</code>, compile with option <code>-I/vol/vb_apps/software/netCDF-Fortran/4.6.1-gompi-2023b/include</code>
* proj
*: <code>PROJ</code>,<code>PROJ/9.3.1-GCCcore-13.2.0</code>

=== Jupyter & Jupyterhub ===

Jupyter-lab and jupyter notebook can be initiated when Anaconda module has been activated:<pre>ml Anaconda3
jupyter-lab --no-browser --port 888X (unoccupied port, interval 8880 < X < 8951)
(Prepare for copy&paste of the output line http://localhost:888X/lab?token=<unique-code>)</pre>Then from your local client computer:<pre>ssh -N -L 888X:localhost:888X <userid>@cyclone1.gfi.uib.no
(same portnumber, hostname= cyclone1 or cyclone2)</pre>From your preferred browser on your local client computer, paste in the http://localhost url output line from jupyter-lab:<pre>http://localhost:888X/lab?token=<unique code></pre>Your jupyter-lab is now supposed to run towards your local browser window.

You can change "jupyter-lab" to "jupyter notebook" in first startup if notebook is preferred.

Here is a step by step guide to setup and use Jupyter based on the <code>dynpie3</code> environment.

[[File:Get started cyclone.pdf|thumb|Step by step guide for Jupyter on cyclone]]

== Accessing the data from your own machines ==

Note: From your private machines you will need to be connected to the UiB VPN to be able to mount the following network drives. From UiB-client computers, UiB network connection is sufficient.

On MacOS you can mount folders through <code>Finder > Go > Connect to Server ...</code>. In the dialogue window that pops up, enter
<pre>smb://uib.no;<user name>@klient.uib.no/FELLES/MATNAT/GFI</pre>
as the '''Server Address'''. You might want to replace <code>gfi</code> by <code>skd</code> to access the skd disks if that is your primary affiliation.
On Ubuntu this is very similar: <code>Files > Go > Enter Location ...</code>. Enter the address: <pre>smb://uib.no;<user name>@klient.uib.no/FELLES/MATNAT/GFI</pre> and enter your password in the next pop-up window, while keeping "UiB" in the "Domain" field.

From Windows you can mount by navigating to <code>File Explorer > Map network drive</code> and enter <code>\\klient.uib.no\felles\matnat\gfi</code>. Make sure to enable <code>Connect using different credentials</code> and fill in <code><user name>@uib.no</code> and your PW.

From platforms with sshfs available, alternative mount of network drive with sshfs to a dedicated directory using <code>sshfs</code> (linux: install with <code>sudo apt install sshfs</code>):
<pre>mkdir ~/cyclone_gfi
From UiB network: sshfs -o follow_symlinks <user name>@cyclone2.uib.no:/gfi/ ~/cyclone_gfi/
From ext. networks, please connect to UiB vpn first.
Unmount with: fusermount -u ~/cyclone_gfi</pre>
For access to Sigma2 storage resources via sshfs access from cyclones, defining the following aliases can be convenient for mount and umount towards ~/sigma2 - and similar can be done from Sigma2-resource for access to cyclones storage resource:<pre>alias mountsigma2="mkdir ~/sigma2; sshfs <userid>@<sigma2-host>:<sigma2_path> ~/sigma2 -o reconnect,ServerAliveInterval=15,ServerAliveCountMax=3,follow_symlinks,uid=$(id -u),gid=$(id -g)"
alias umountsigma2="cd ; chmod go+rx ~/; fusermount -u ~/sigma2; chmod go-rx ~/; rmdir ~/sigma2"
</pre>

== Displaying GUIs on your screen ==

The ssh-login command at the top of this wiki enables trusted X11 forwarding (the <code>-Y</code> option), which allows you to display Graphical User Interfaces (GUIs) on your screen. Inclusion of <code>-C</code> option as well is an advantage for speeding up the X11 response. This way you may be able to run software on a high performance system in a more userfriendly way than by just operating via the terminal. To make this work properly you may have to edit the ssh configuration file (<code>~/.ssh/config</code> on linux and macos systems) by adding the following lines:

<pre>ForwardX11 yes
ForwardX11Trusted yes
Compression yes</pre>

Windows will require additional terminal software (for establishing an ssh-connection) with inclusion of an XServer (e.g. MobaXterm, WSL or VcXsrv) or [https://hjelp.uib.no/tas/public/ssp/content/detail/service?unid=a9cc906b686940498f0cf68882fc5d20 NoMachine] - and some still prefer Putty.

For Mac the solution should be pretty similar when using XQuartz - for Tahoe and later macos versions it may come necessary with the following initial setting for Xquartz, entered from your Mac command shell:<pre>defaults write org.xquartz.X11 enable_render_extension 0</pre>

And it may come fortunate with later follow up toggling "Full-screen mode" in XQuarts settings -> Output.

Dynlib

2026-04-17T09:42:47Z

Anmar5059: Typesetting

== [http://folk.uib.no/csp001/dynlib_doc/ Documentation] ==

The steps necessary to obtain dynlib are described below. A more thorough documentation is compiled in [http://folk.uib.no/csp001/dynlib_doc/ the main documentation website].

== Quick start to developing with dynlib ==

*Before you compile you need to set up an environment where you will install the necessary libraries with the required version (e.g., numpy not newer than 1.26.2)
*:<code>$ python3 -m venv dyn</code>
*:<code>$ pip install numpy==1.26.2</code>
*:<code>$ pip install scipy python-dateutil</code>
*:<code>$ pip install xarray pandas netcdf4 h5netcdf</code>
*:<code>$ pip install python-dateutil</code>
*:<code>$ pip install basemap==1.3.8 basemap-data-hires</code>
*Then activate the environment
*:<code>$ '''source''' dyn/bin/activate</code>

=== Obtaining dynlib ===

#Copying the source code repository
#:<code>$ git clone /Data/gfi/users/local/src/dynlib.git</code>
#:To clone the repository to your laptop or any machine outside the UiB network, use
#:<code>$ git clone <username>@login.uib.no:/Data/gfi/users/local/src/dynlib.git</code>
# Change into the dynlib folder
#:<code>$ cd dynlib</code>
#Compile the library
#:<code>$ ./compile</code> Make sure that the current hostname is recognised, if needed add the following lines to compile
#:<code>if [ "${host: -9}" == 'novalocal' ]; then</code><code> LIBS="-L$(pwd)/ext/spherepack3.2/lib -lopenblas -lscalapack -lspherepack"</code> <code> RPATH="" #-Wl,-rpath,/Data/gfi/users/local/lib"</code> and change <code>host=`hostname -f`</code> to <code>host=`hostname`</code>
# Finally, you need to link external libraries
#:<code>export LD_LIBRARY_PATH="/cvmfs/software.eessi.io/versions/2023.06/software/linux/x86_64/generic/software/ScaLAPACK/2.2.0-gompi-2023b-fb/lib:/cvmfs/software.eessi.io/versions/2023.06/software/linux/x86_64/generic/software/OpenBLAS/0.3.24-GCC-13.2.0/lib"</code>
# To use your personal development version of dynlib, create a symlink in your scripts folder that points to the development version
#:<code><in script folder>$ ln -s <path-to-dynlib>/lib dynlib</code>
=== Editing the Fortran code ===

The fortran code lives in <code>lib/fortran</code> directory. At the moment there are 16 source code files 
<nowiki>$ ls *.f90
config.f90 detect_lines.f90 ellipse.f90 stat.f90
const.f90 detect_rwb_contour.f90 interpol.f90 tend.f90
derivatives.f90 diag.f90 kind.f90 thermodyn.f90
detect.f90 diag_tend.f90 sphere.f90 utils.f90</nowiki>
The most important are <code>diag.f90</code> which contains subroutines that calculate various diagnostics, and <code>detect.f90</code> which contains feature detection algorithms. Changed Fortran sources need to be recompiled, again using
:<code>$ ./compile</code>

=== [[git|Version control]] ===

The changes you made to the source code files can be listed by
:<code>$ git status</code>
or viewed in detailed diff-comparisons by
:<code>$ git diff</code>
or for one file only
:<code>$ git diff <filename></code>

In case you want to undo your changes, you can revert any file to the last committed version by
:<code>git checkout <filename></code>

Commit your changes from time to time and give a sensible and brief description of your changes in the editor that is opened (automatically)
:<code>$ git commit -a</code>
The commit is then stored in your copy of the source code repository, but not yet available for others, which allows you to also commit work-in-progress.

A more thorough introduction to the version control system is given [[git|here]] or on the [http://git-scm.com/book official documentation].

=== Using the Fortran functions ===

An example python script which calculates deformation using the Fortran function is provided in the [http://folk.uib.no/csp001/dynlib_doc/examples.html documentation].

== Dynlib functions ==

The functions are classified into different categories. All functions and categories listed in the [http://folk.uib.no/csp001/dynlib_doc/apidoc.html API documentation].

[[Category:Dynlib]]
[[Category:Libraries]]

Dynlib

2026-04-17T09:41:28Z

Anmar5059: Updated procedure to install and use dynlib on the new cyclone1-3

== [http://folk.uib.no/csp001/dynlib_doc/ Documentation] ==

The steps necessary to obtain dynlib are described below. A more thorough documentation is compiled in [http://folk.uib.no/csp001/dynlib_doc/ the main documentation website].

== Quick start to developing with dynlib ==

*Before you compile you need to set up an environment where you will install the necessary libraries with the required version (e.g., numpy not newer than 1.26.2)
*:<code>$ python3 -m venv dyn</code> <code>$ pip install numpy==1.26.2</code> <code>$ pip install scipy python-dateutil</code> <code>$ pip install xarray pandas netcdf4 h5netcdf</code> <code>$ pip install python-dateutil</code> <code>$ pip install basemap==1.3.8 basemap-data-hires</code>
*Then activate the environment
*:<code>$ '''source''' dyn/bin/activate</code>

=== Obtaining dynlib ===

#Copying the source code repository
#:<code>$ git clone /Data/gfi/users/local/src/dynlib.git</code>
#:To clone the repository to your laptop or any machine outside the UiB network, use
#:<code>$ git clone <username>@login.uib.no:/Data/gfi/users/local/src/dynlib.git</code>
# Change into the dynlib folder
#:<code>$ cd dynlib</code>
#Compile the library
#:<code>$ ./compile</code> Make sure that the current hostname is recognised, if needed add the following lines to compile
#:<code>if [ "${host: -9}" == 'novalocal' ]; then</code><code> LIBS="-L$(pwd)/ext/spherepack3.2/lib -lopenblas -lscalapack -lspherepack"</code> <code> RPATH="" #-Wl,-rpath,/Data/gfi/users/local/lib"</code> and change <code>host=`hostname -f`</code> to <code>host=`hostname`</code>
# Finally, you need to link external libraries
#:<code>export LD_LIBRARY_PATH="/cvmfs/software.eessi.io/versions/2023.06/software/linux/x86_64/generic/software/ScaLAPACK/2.2.0-gompi-2023b-fb/lib:/cvmfs/software.eessi.io/versions/2023.06/software/linux/x86_64/generic/software/OpenBLAS/0.3.24-GCC-13.2.0/lib"</code>
# To use your personal development version of dynlib, create a symlink in your scripts folder that points to the development version
#:<code><in script folder>$ ln -s <path-to-dynlib>/lib dynlib</code>
=== Editing the Fortran code ===

The fortran code lives in <code>lib/fortran</code> directory. At the moment there are 16 source code files 
<nowiki>$ ls *.f90
config.f90 detect_lines.f90 ellipse.f90 stat.f90
const.f90 detect_rwb_contour.f90 interpol.f90 tend.f90
derivatives.f90 diag.f90 kind.f90 thermodyn.f90
detect.f90 diag_tend.f90 sphere.f90 utils.f90</nowiki>
The most important are <code>diag.f90</code> which contains subroutines that calculate various diagnostics, and <code>detect.f90</code> which contains feature detection algorithms. Changed Fortran sources need to be recompiled, again using
:<code>$ ./compile</code>

=== [[git|Version control]] ===

The changes you made to the source code files can be listed by
:<code>$ git status</code>
or viewed in detailed diff-comparisons by
:<code>$ git diff</code>
or for one file only
:<code>$ git diff <filename></code>

In case you want to undo your changes, you can revert any file to the last committed version by
:<code>git checkout <filename></code>

Commit your changes from time to time and give a sensible and brief description of your changes in the editor that is opened (automatically)
:<code>$ git commit -a</code>
The commit is then stored in your copy of the source code repository, but not yet available for others, which allows you to also commit work-in-progress.

A more thorough introduction to the version control system is given [[git|here]] or on the [http://git-scm.com/book official documentation].

=== Using the Fortran functions ===

An example python script which calculates deformation using the Fortran function is provided in the [http://folk.uib.no/csp001/dynlib_doc/examples.html documentation].

== Dynlib functions ==

The functions are classified into different categories. All functions and categories listed in the [http://folk.uib.no/csp001/dynlib_doc/apidoc.html API documentation].

[[Category:Dynlib]]
[[Category:Libraries]]

Meteorology Calendar Spring 2026

2026-02-05T07:56:30Z

Anmar5059:

The Meteorology Group Lunch Meeting takes place on Thursday at 12:05 in U105 in the GFI cantina, where you can also join online in Zoom.

At the start of each meeting, we will have an information exchange of 5-10 minutes to have updates on subjects such as recent and upcoming conferences or past weather events.

For the spring semester 2026 [mailto:Frederike.S.Moller@uib.no Frederike Möller] and [mailto:christoffer.hovas@uib.no Christoffer Høvås] are in charge of organizing the seminar speakers. So please send them an email if you would like to present something.

For presentations please keep contributions between '''15''' and max. '''25''' minutes to leave enough time to discuss the material. We will have maximum one long presentation per meeting and can accommodate an additional couple of shorter ones, which can be project presentations or other group-related issues.

It is also possible to join on Zoom via https://uib.zoom.us/j/68473038190?pwd=T3JzY0Z5UXQ4ZUdmcE56c0VrcFhhQT09

Back to [[Meteorology Calendar|main Calendar]]
{| class="wikitable" border="1"
|+Itinerary:
! width="100" |Date
! width="180" |Who
! width="120" |Length
! width="600" |Title
! width="300" |Room
|-
|15-01-2026
|
|
|Metlunch kickoff
|Inger Bruun (325)
|-
|22-01-2026
|
|
|
|Inger Bruun (325)
|-
|29-01-2026
|Harald Sodemann & Christoffer Høvås
|20 min
|NAWDIC research plan and preparations
|Inger Bruun (325)
|-
|05-02-2026
|
|
|
|Inger Bruun (325)
|-
|12-02-2026
|Christoffer...(?)
|
|NAWDIC in situ(?)
|U105
|-
|19-02-2026
|Andrea Marcheggiani
|
|Impact of the distribution of SST on storm track variability
|U105
|-
|26-02-2026
|
|
|Winter break
|U105
|-
|05-03-2026
|
|
|
|Inger Bruun (325)
|-
|12-03-2026
|Torbjørg Venstad
|25 min
|Midterm evaluation: TBD
|U105
|-
|19-03-2026
|
|
|
|U105
|-
|26-03-2026
|
|
|
|U105
|-
|02-04-2026
|
|
|Easter break
|Inger Bruun (325)
|-
|09-04-2026
|
|
|
|U105
|-
|16-04-2026
|
|
|
|U105
|-
|23-04-2026
|TBD
|
|EGU presentation
|U105
|-
|30-04-2026
|TBD
|
|EGU presentation
|Inger Bruun (325)
|-
|07-05-2026
|
|
|
|Inger Bruun (325)
|-
|14-05-2026
|
|
|
|U105
|-
|21-05-2026
|
|
|
|Inger Bruun (325)
|-
|28-05-2026
|
|
|
|U105
|}

Meteorology Calendar Spring 2025

2025-03-12T14:14:15Z

Anmar5059:

The Meteorology Group Lunch Meeting takes place on Thursday at 12:05 in U105 in the GFI cantina, where you can also join online in Zoom.

At the start of each meeting, we will have an information exchange of 5-10 minutes to have updates on subjects such as recent and upcoming conferences or past weather events.

For the spring semester 2025 [Mailto:Laura.Dietrich@uib.no Laura Dietrich] and [Mailto:costijn.zwart@uib.no|Costijn Costijn Zwart] are in charge of organizing the seminar speakers. So please send them an email if you would like to present something.

For presentations please keep contributions between '''15''' and max. '''25''' minutes to leave enough time to discuss the material. We will have maximum one long presentation per meeting and can accommodate an additional couple of shorter ones, which can be project presentations or other group-related issues.

It is also possible to join on Zoom via https://uib.zoom.us/j/68473038190?pwd=T3JzY0Z5UXQ4ZUdmcE56c0VrcFhhQT09

Back to [[Meteorology Calendar|main Calendar]]
{| class="wikitable" border="1"
|+Itinerary:
! width="100" |Date
! width="180" |Who
! width="120" |Length
! width="600" |Title
! width="300" |Room
|-
|16-01-2025
|Jeroen Oostdam
|25 min
|Evaluating cyclone-centred composites of clustered and non-clustered cyclones
|BCCR undervisningsrom 4020
|-
|23-01-2025
|Andrea Marcheggiani + everyone
|25 min
|NFR project Japan
+ pitching of funded projects in the metlunch (1 slide)
|U105
|-
|30-01-2025
|Torbjørg Venstad
|25 min
|PhD project description
|U105
|-
|06-02-2025
|María Antonia Jiménez Cortés
|25 min
|The sea breeze in complex terrain regions
|U105
|-
|13-02-2025
|Joachim Reuder
|25 min
|SAMURAI
|U105
|-
|20-02-2025
|
|
|
|U105
|-
|<s>27-02-2025</s>
| colspan="4" |'''Winter holidays'''
|-
|06-03-2025
|
|
|
|BCCR undervisningsrom 4020
|-
|13-03-2025
|Satoru Okajima
|30 min
|Anticyclonic suppression of the storm track activity
|BCCR undervisningsrom 4020
|-
|20-03-2025
|Andrew Seidl
|45 min
|PhD trial lecture
|U105
|-
|27-03-2025
|Stephan Kral
|
|Cruise experience / Atmospheric observations on Rover cruise
|U105
|-
|03-04-2025
|
|
|
|U105
|-
|10-04-2025
|Jesper Sjolte
|25 min
|Forced variability of North Atlantic climate modes – past millennium and future scenarios
|U105
|-
|<s>17-04-2025</s>
| colspan="4" |'''Maundy Thursday'''
|-
|24-04-2025
|
|
|
|BCCR undervisningsrom 4020
|-
|<s>01-05-2025</s>
| colspan="4" |'''Labor Day'''
|-
|08-05-2025
|Kjersti Konstali
|25 min
|Updates on postdoc project, title TBA
|U105
|-
|15-05-2025
|Erik W. Kolstad
|
|Translating research to practice: examples from Africa and Norway
|U105
|-
|22-05-2025
|
|
|
|U105
|-
|<s>29-05-2025</s>
| colspan="4" |'''Ascension Day'''
|-
|05-06-2025
|David Schultz
|35 min
|Exploring Bergen School History from Outside Norway
|BCCR undervisningsrom 4020
|-
|12-06-2025
|Andrea Marcheggiani
|25 min
|Update from Japan-BALMCAST
|U105
|-
|19-06-2025
|
|
|
|U105
|-
|26-06-2025
|
|
|
|U105
|}

Meteorology Calendar Autumn 2024

2024-10-16T09:16:40Z

Anmar5059:

The Meteorology Group Lunch Meeting takes place on Thursday at 12:05 in U105 in the GFI cantina, where you can also join online in Zoom.

At the start of each meeting, we will have an information exchange of 5-10 minutes to have updates on subjects such as recent and upcoming conferences or past weather events.

For the Autumn semester 2024 [mailto:stephan.kral@uib.no Stephan Kral] and [mailto:qidi.yu@uib.no Qidi Yu] are in charge of organizing the seminar speakers. So please send them an email if you would like to present something.

For presentations please keep contributions between '''15''' and max. '''25''' minutes to leave enough time to discuss the material. We will have maximum one long presentation per meeting and can accommodate an additional couple of shorter ones, which can be project presentations or other group-related issues.

It is also possible to join on Zoom via https://uib.zoom.us/j/68473038190?pwd=T3JzY0Z5UXQ4ZUdmcE56c0VrcFhhQT09

Back to [[Meteorology_Calendar|main Calendar]]
{| class="wikitable" border="1"
|+Itinerary:
|-
! width="100" |Date
! width="180" |Who
! width="120" |Length
! width="600" |Title
! width="300" |Room
|-
|22-08-24|| Fernando Sanches Lopes||25 min|| Modelling lifetime and damage evolution of LEP coating configurations subject to rain erosion based on climatology of hydrometeor size distributions
+ Semester Kick-Off
|U105
|-
|29-08-24|| Mauro Ghirardelli||45 min || PhD trial lecture||U105
|-
|05-09-24|| Eigo Tochimoto||25 min|| A composite study of extratropical cyclones accompanied by split fronts in the Northwestern Pacific||U105
|-
|12-09-24|| <s>Sanaz Zarif</s>||<s>25 min</s>|| <s>PhD project description</s>||<s>U105</s>
|-
|19-09-24|| Cos Zwart||25 min|| Introduction ||U105
|-
|26-09-24|| Mari Steinslid ||25 min|| Advancing the Understanding of the Atmospheric Water Cycle in Numerical Weather Prediction Models by Model-data Comparisons at Native Time-step Resolution ||U105
|-
|03-10-24|| Fumiaki Ogawa||30 min|| Moist dynamics in mid-latitude storm tracks near ocean fronts: recent results and future research||U105
|-
|10-10-24|| || || Autumn Vacation||
|-
|17-10-24|| Andrea Marcheggiani||25 min|| Effects of cold-air outbreaks on near-surface baroclinicity||U105
|-
|24-10-24|| Ida Haven||25 min|| Observations of latent heat fluxes over the Greenland ice sheat||U105
|-
|31-10-24|| ||...|| ||U105
|-
|07-11-24|| Josh Dorrington||25 min|| Forecasts and projections of extreme rainfall using dynamical precursors||U105
|-
|14-11-24|| ||...|| ||U105
|-
|21-11-24|| ||...|| ||U105
|-
|28-11-24|| ||...|| ||U105
|-
|05-12-24|| ||...|| ||U105
|-
|12-12-24|| ||...|| ||U105
|-
|19-12-24|| ||...|| ||U105
|-
|}

Meteorology Calendar Spring 2024

2024-01-18T09:13:19Z

Anmar5059:

The Meteorology Group Lunch Meeting takes place on Thursday at 12:05 in U105 in the GFI cantina, where you can also join online in Zoom.

At the start of each meeting, we will have an information exchange of 5-10 minutes to have updates on subjects such as recent and upcoming conferences or past weather events.

For the Spring semester 2024 [mailto:stephan.kral@uib.no Stephan Kral] and [mailto:qidi.yu@uib.no Qidi Yu] are in charge of organizing the seminar speakers. So please send them an email if you would like to present something.

For presentations please keep contributions between '''15''' and max. '''25''' minutes to leave enough time to discuss the material. We will have maximum one long presentation per meeting and can accommodate an additional couple of shorter ones, which can be project presentations or other group-related issues.

It is also possible to join on Zoom via
https://uib.zoom.us/j/68473038190?pwd=T3JzY0Z5UXQ4ZUdmcE56c0VrcFhhQT09

Back to [[Meteorology_Calendar|main Calendar]]

{| border="1" class="wikitable" style="text-align:center;"
|+ style="text-align:left"| Itinerary:
|-
! width="100" | Date
! width="180" | Who
! width="120" | Length
! width="600" | Title
! width="300" | Room
|-
| 04-01-24 || Everyone || ... || Semester Kick-Off and preparation for New Years Party || Helland Hansen
|-
| 11-01-24 || ... || ... || ... || U105
|-
| 18-01-24 || Stephan Thomas Kral || 25 min || TBD || U105
|-
| 25-01-24 || Hans-Christian Steen Larsen || 25 min || Logisical challenges with field work in Greenland || U105
|-
| 01-02-24 || Eigo Tochimoto || 25 min || TBD || U105
|-
| 08-02-24 || ... || ... || ... || U105
|-
| 15-02-24 || Helen Dacre || ... || TBD || U105
|-
| 22-02-24 || Qidi Yu || 25 min || Mid-way presentation || U105
|-
| 29-02-24 || Andrea Marcheggiani || ... || TBD || U105
|-
| 07-03-24 || ... || ... || ... || U105
|-
| 14-03-24 || Eigo Tochimoto || 25 min || TBD || U105
|-
| 21-03-24 || Svenya Chripko || 25 min || TBD || U105
|-
| 28-03-24 || No Met Lunch || ... || Easter || U105
|-
| 04-04-24 || ... || ... || ... || U105
|-
| 11-04-24 || ... || ... || EGU practice slots || U105
|-
| 18-04-24 || No Met Lunch || ... || EGU || U105
|-
| 25-04-24 || ... || ... || ... || U105
|-
| 02-05-24 || ... || ... || ... || U105
|-
| 09-05-24 || No Met Lunch || ... || Ascension day || U105
|-
| 16-05-24 || Mark Schüttpelz || 25 min || TBD || U105
|-
| 23-05-24 || ... || ... || ... || U105
|-
| 30-05-24 || ... || ... || ... || U105
|-
| 06-06-24 || ... || ... || ... || U105
|-
| 13-06-24 || ... || ... || ... || U105
|-
| 20-06-24 || No Met Lunch || ... || NGF Conference || U105
|-
| 27-06-24 || Everyone || ... || Semester Wrap Up || U105
|-

Meteorology Calendar Spring 2024

2024-01-16T14:24:20Z

Anmar5059:

The Meteorology Group Lunch Meeting takes place on Thursday at 12:05 in U105 in the GFI cantina, where you can also join online in Zoom.

At the start of each meeting, we will have an information exchange of 5-10 minutes to have updates on subjects such as recent and upcoming conferences or past weather events.

For the Spring semester 2024 [mailto:stephan.kral@uib.no Stephan Kral] and [mailto:qidi.yu@uib.no Qidi Yu] are in charge of organizing the seminar speakers. So please send them an email if you would like to present something.

For presentations please keep contributions between '''15''' and max. '''25''' minutes to leave enough time to discuss the material. We will have maximum one long presentation per meeting and can accommodate an additional couple of shorter ones, which can be project presentations or other group-related issues.

It is also possible to join on Zoom via
https://uib.zoom.us/j/68473038190?pwd=T3JzY0Z5UXQ4ZUdmcE56c0VrcFhhQT09

Back to [[Meteorology_Calendar|main Calendar]]

{| border="1" class="wikitable" style="text-align:center;"
|+ style="text-align:left"| Itinerary:
|-
! width="100" | Date
! width="180" | Who
! width="120" | Length
! width="600" | Title
! width="300" | Room
|-
| 04-01-24 || Everyone || ... || Semester Kick-Off and preparation for New Years Party || Helland Hansen
|-
| 11-01-24 || ... || ... || ... || U105
|-
| 18-01-24 || Stephan Thomas Kral || 25 min || TBA || U105
|-
| 25-01-24 || Hans-Christian Steen Larsen || 25 min || Logisical challenges with field work in Greenland || U105
|-
| 01-02-24 || Eigo Tochimoto || 25 min || TBA || U105
|-
| 08-02-24 || ... || ... || ... || U105
|-
| 15-02-24 || Helen Dacre || ... || TBD || U105
|-
| 22-02-24 || Qidi Yu || 25 min || Mid-way presentation || U105
|-
| 29-02-24 || ... || ... || ... || U105
|-
| 07-03-24 || ... || ... || ... || U105
|-
| 14-03-24 || Eigo Tochimoto || 25 min || TBA || U105
|-
| 21-03-24 || Svenya Chripko || 25 min || TBA || U105
|-
| 28-03-24 || No Met Lunch || ... || Easter || U105
|-
| 04-04-24 || ... || ... || ... || U105
|-
| 11-04-24 || ... || ... || EGU practice slots || U105
|-
| 18-04-24 || No Met Lunch || ... || EGU || U105
|-
| 25-04-24 || ... || ... || ... || U105
|-
| 02-05-24 || ... || ... || ... || U105
|-
| 09-05-24 || No Met Lunch || ... || Ascension day || U105
|-
| 16-05-24 || Mark Schüttpelz || 25 min || TBA || U105
|-
| 23-05-24 || ... || ... || ... || U105
|-
| 30-05-24 || ... || ... || ... || U105
|-
| 06-06-24 || ... || ... || ... || U105
|-
| 13-06-24 || ... || ... || ... || U105
|-
| 20-06-24 || No Met Lunch || ... || NGF Conference || U105
|-
| 27-06-24 || Everyone || ... || Semester Wrap Up || U105
|-

ERA5 reanalysis data

2023-09-14T09:15:24Z

Anmar5059: Improved presentation of the different data formats used to archive data on cyclone

GFI is building up an archive of ERA5 reanalysis data on the local linux system cyclone.hpc.uib.no. ERA5 supersedes the ERA-Interim reanalysis data, which ended in August 2019. More information about the ERA5 reanalysis data set is available [https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5 at ECMWF's ERA5 websites].

The ERA5 data files are available in a CF-compatible netCDF format on cyclone.hpc.uib.no and other computers that mount the UiB linux system at

/Data/gfi/share/era5

The data are organised as follows

ml/ 3-hourly data on a regular 0.5 deg lat-lon grid, with model-level and pressure level files (see below)
pl/ pressure level data following the format of ERA-interim.
pl_tendencies/ diabatic temperature tendencies on pressure levels, following the format of ERA-interim.
pv2/ Data on the PV2-surface following the format of ERA-interim.
sfc/ Single-level data following the format of ERA-interim.
slope/ Isentropic slope data and its tendencies following the format of ERA-interim

'''Data in ETH Zurich format'''

Data in the '''ml'''-folder are contained in subdirectories for each year and month:

ml/yyyy/mm/[B|H|P|Z]yyyymmdd_hh

where yyyy is the year, mm the two-digit month, dd the two-digit day, and hh the two-digit hours, and Bxxx, Hxxx, Pxxx, Zxxx are different file types, as described in the table below. This format is the same used at the [https://iac.ethz.ch/group/atmospheric-dynamics.html Atmospheric Dynamics group at IAC, ETH Zürich, Switzerland]; the [https://www.imk-tro.kit.edu/7425.php LSDP group at Karlsruhe Institute of Technology, Germany]; and the [https://www.weizmann.ac.il/EPS/raveh-rubin/ Dynamical Meteorology Group, Weizmann Institute of Science, Rehovot, Israel].

Until now, the years 1999-2018 have been retrieved. The period will successively be extended back to 1979, and forward in time.

The data files contain the following variables:

{| class="wikitable"
|+ '''ERA5 data files in ETH Zurich format format'''
|-
|File name
|colspan="2"|Pyyyymmdd_hh
|colspan="1"|Zyyyymmdd_hh
|colspan="1"|Hyyyymmdd_hh
|colspan="1"|Byyyymmdd_hh
|-
|Leveltype
|Model level
|Surface
|Pressure
|Pressure
|Surface
|-
|Variables
|T, Q, U, V, OMEGA, LWC, IWC, RWC, SWC
|LSP, CP, SF, SSHF, SLHF, BLH, TCC, U10M, V10M, MSL, PS, SSTK
|Z, T, Q, U, V
|Z
|PS, MSL, TCC, U10M, V10M, SSTK, CI, D2M, T2M, TCW, TCWV, VIWVD, E, MN2T, MX2T, SI, TTR, TTRC, WG10, LSP, CP, SF, SSHF, SLHF, BLH
|-
|Levels
|40-137
| -
|900, 850, 800, 700, 600, 500, 400, 300, 250, 200, 100 hPa
|1000, 975, 950, 925, 900, 875, 850, 825, 800, 775, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 225, 200, 175, 150, 125, 100, 70, 50, 30, 20, 10, 70, 5, 3, 2, 1 hPa
| -
|-
|Times available
|colspan="5"|00, 03, 06, 09, 12, 15, 18, 21 UTC
|}

Note that the variables LSP, CP, SF, SSHF, SLHF, and BLH are derived as prognostic variables from the short-range forecast. Data valid at 00, 03, 06, 09 UTC are 06, 09, 12, 15 h forecast of the 18 UTC forecast of the previous day. Accordingly, data valid at 12, 15, 18, 21 UTC are 06, 09, 12, 15 h forecast of the 06 UTC forecast. The prognostic variables are accumulated over the previous 1 h.

Please see [https://confluence.ecmwf.int/display/CKB/ERA5%3A+data+documentation ECMWF ERA5 data documentation] for parameter abbreviations.

'''Data in Bergen format'''

Data in the '''sfc''','''slope''', '''pl''', '''pl_tendencies''' and '''pv2'''-folders is organised in one file per month, variable and level, for example:

pl/ea.[ans|for].yyyymm.plev.var

This data is completely available for 1979-2022. Specifically, we have the following data available

{| class="wikitable"
|+ '''ERA5 data files in Bergen format'''
|-
!colspan="1"|Folder
!colspan="1"|Data available (see [https://confluence.ecmwf.int/display/CKB/ERA5%3A+data+documentation] for parameter abbreviations)
!colspan="1"|Details
|-
| rowspan=2 | '''sfc/'''
|blh, msl, siconc, sp, sst, t2m, tcwv, u10, v10, viewvf, vinwf
|Instantaneous (ans)
|-
|cp, lsp, slhf, sshf, ssrd, ssr, strd, str, tsr, ttr
|Accumulated over previous 3 hours (for)
|-
|'''pl/'''
|t, q, z, u, v, w
|Instantaneous (ans)
|-
|'''pl_tendencies/'''
|mttlwrcs, mttlwr, mttpm, mttswrcs, mttswr
|Accumulated over previous 3 hours (for)
|-
|'''pv2/'''
|u, v, pt, pres
|Instantaneous (ans)
|}

The folder '''slope/''' contains data deriving from the isentropic slope framework (see [https://doi.org/10.1002/qj.2605 Papritz and Spengler, 2015], for more details):

{| class="wikitable"
!colspan="1"|Variable name
!colspan="1"|Description
!colspan="1"|Equation
!colspan="1"|Units
!colspan="1"|Notes
|-
|slope
|Slope of isentropic surface
| S = abs(gradθz)
|m m-1
|Instantaneous
|-
|tilt
|Tendency in slope due to tilting
| gradθz /S · gradθ wid
|m m-1 s-1
|Instantaneous
|-
|diab
|Tendency in slope due to diabatic heating
| -dz/dθ gradθz /S · gradθ (dθ/dt)
|m m-1 s-1
|Accumulated over 6-hour period centred on instantaneous time step (stored as instantaneous, ans)
|-
|iadv
|Tendency in slope due to isentropic advection
| '''u''' · gradθS
|m m-1 s-1
|Instantaneous
|-
|w_ci
|Cross isentropic vertical velocity
| w - wiu
|m s-1
|Instantaneous
|-
|mask_slope
|Combination of masks from slope, diab and tilt
| -
|0-1
|Instantaneous
|}

'''Conditions of use:''' When using the ERA5 data from this archive please make sure to reference "[https://cds.climate.copernicus.eu/cdsapp#!/home Copernicus Climate Change Service (C3S) (2017): ERA5: Fifth generation of ECMWF atmospheric reanalyses of the global climate. Copernicus Climate Change Service Climate Data Store (CDS)], date of citation" and acknowledge "ECMWF for providing ERA-5 data“. Also, please acknowledge "Michael Sprenger (ETH Zurich)“ for the support in providing the data.

Meteorology Calendar Spring 2023

2023-05-22T08:44:48Z

Anmar5059:

The Meteorology Group Lunch Meeting takes place on Thursday at 12:05 in U105 in the GFI cantina, where you can also join online in Zoom.

At the start of each meeting we will have an information exchange of 5-10 minutes to have updates on subjects such as recent and upcoming conferences or past weather events.

For the Spring semester 2023 [mailto:mari.steinslid@uib.no Mari Steinslid] and [mailto:pirmin.ebner@uib.no Pirmin Ebner] are in charge for organizing the seminar speakers. So please send them an email if you would like to present something.

For presentations please keep contributions between '''15''' and max. '''25''' minutes to leave enough time for discussion of the material. We will have maximum one long presentation per meeting and can accommodate an additional couple of shorter ones, which can be project presentations or other group related issues.

It is also possible to join on Zoom via
https://uib.zoom.us/j/68473038190?pwd=T3JzY0Z5UXQ4ZUdmcE56c0VrcFhhQT09

Back to [[Meteorology_Calendar|main Calendar]]

{| border="1" class="wikitable" style="text-align:center;"
|+ style="text-align:left"| Itinerary:
|-
! width="100" | Date
! width="180" | Who
! width="120" | Length
! width="600" | Title
! width="300" | Room
|-
| 19-01-23 || ... || ... || Semester Kick-Off || ...
|-
| 26-01-23 || Christoff Andermann || 20 min || Stable water isotopes and the high mountain water cycle || U105
|-
| 02-02-23 || Svenya Chripko || 20 min || Impact of Arctic sea ice loss on winter mid-latitude atmospheric circulation and Role of marine cold air outbreaks on ocean circulation - Previous work and current postdoc project || Inger Bruun
|-
| 09-02-23 || Andrea Marcheggiani || 20 min || Diabatic effects on the evolution of stormtracks || Helland-Hansen
|-
| 16-02-23 || Ines Ollivier || 20 min || Estimation of moisture fluxes in East Antarctica from in-situ measurements || U105 + zoom
|-
| 23-02-23 || Mari Steinslid || 20 min || PhD project presentation || U105
|-
| 02-03-23 || Pirmin Ebner || 20 min || PostDoc project iTRANSFER || U105
|-
| 09-03-23 || Kjersti Konstali || 20 min || Exploring future precipitation changes in CESM2-LE from a weather perspective || Helland-Hansen
|-
| 16-03-23 || Johannes Lutzmann || 20 min || Tracking Frontal Life Cycles || Helland-Hansen
|-
| 23-03-23 || Harald Sodemann || ... || Transport and transformation of airmasses in the Arctic - TranSval proposal to NRF || Helland-Hansen
|-
| 30-03-23 || Thomas Spengler || 20 min || Advancing Road Weather Forecasting through integration of meteorological, mobile sensor, and winter road maintenance data (RoadMet) || Helland-Hansen
|-
| 06-04-23 || Easter || ... || No meeting || ...
|-
| 13-04-23 || Clemens Spensberger || 20 min || Moisture pathways: linking atmospheric rivers and warm moist intrusions || ...
|-
| 20-04-23 || ... || ... || EGU practice slots || ...
|-
| 27-04-23 || EGU || ... || No meeting || ...
|-
| 04-05-23 || Mauro Ghirardelli || 20 min || Report on the MOSAI campaign || U105
|-
| 11-05-23 || Dan Li || 20 min || Land-atmosphere interaction: surface-layer turbulence, surface energy balance, and surface heterogeneity || ...
|-
| 18-05-23 || Ascension day || ... || No meeting || ...
|-
| 25-05-23 || Maarten Ambaum || ... || Cloud seeding with charge: physics facts and “alternative facts” || U105
|-
| 01-06-23 || ... || ... || ... || ...
|-
| 08-06-23 || Thomas Batelaan || 30 min || ... || U105
|-
| 15-06-23 || ... || ... || ... || ...
|-
| 22-06-23 || ... || ... || ... || ...
|-
| 29-06-23 || ... || ... || ... || ...

ERA5 reanalysis data

2023-03-20T14:26:04Z

Anmar5059:

Documentation of the ERA5 archive at GFI

GFI is building up an archive of ERA5 reanalysis data on the local linux system cyclone.hpc.uib.no. ERA5 supersedes the ERA-Interim reanalysis data, which ended in August 2019. More information about the ERA5 reanalysis data set is available [https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5 at ECMWF's ERA5 websites].

The ERA5 data files are available in a CF-compatible netCDF format on cyclone.hpc.uib.no and other computers that mount the UiB linux system at

/Data/gfi/share/era5

At GFI, we share the data format with the [https://iac.ethz.ch/group/atmospheric-dynamics.html Atmospheric Dynamics group at IAC, ETH Zürich, Switzerland]; the [https://www.imk-tro.kit.edu/7425.php LSDP group at Karlsruhe Institute of Technology, Germany]; and the [https://www.weizmann.ac.il/EPS/raveh-rubin/ Dynamical Meteorology Group, Weizmann Institute of Science, Rehovot, Israel]. The data are organised as follows

ml/ 3-hourly data on a regular 0.5 deg lat-lon grid, with model-level and pressure level files (see below)
pl/ pressure level data following the format of ERA-interim.
pl_tendencies/ diabatic temperature tendencies on pressure levels, following the format of ERA-interim.
pv2/ Data on the PV2-surface following the format of ERA-interim.
sfc/ Single-level data following the format of ERA-interim.
slope/ Isentropic slope data and its tendencies following the format of ERA-interim

Data in the '''ml'''-folder are contained in subdirectories for each year and month:

ml/yyyy/mm/[B|H|P|Z]yyyymmdd_hh

where yyyy is the year, mm the two-digit month, dd the two-digit day, and hh the two-digit hours, and Bxxx, Hxxx, Pxxx, Zxxx are different file types, as described in the table below.

Until now, the years 1999-2018 have been retrieved, the period will successively be extended back to 1979, and forward in time.

Data in the '''pl_*''', '''sfc''', '''pv2''' and '''slope'''-folders is organised in one file per month, variable and level, for example:

pl/ea.[ans|for].YYYYMM.PLEV.VAR

This data is completely available for 1979-2020.

The data files contain the following variables:

{| class="wikitable"
!colspan="6"|ERA5 data files
|-
|File name
|colspan="2"|Pyyyymmdd_hh
|colspan="1"|Zyyyymmdd_hh
|colspan="1"|Hyyyymmdd_hh
|colspan="1"|Byyyymmdd_hh
|-
|Leveltype
|Model level
|Surface
|Pressure
|Pressure
|Surface
|-
|Variables
|T, Q, U, V, OMEGA, LWC, IWC, RWC, SWC
|LSP, CP, SF, SSHF, SLHF, BLH, TCC, U10M, V10M, MSL, PS, SSTK
|Z, T, Q, U, V
|Z
|PS, MSL, TCC, U10M, V10M, SSTK, CI, D2M, T2M, TCW, TCWV, VIWVD, E, MN2T, MX2T, SI, TTR, TTRC, WG10, LSP, CP, SF, SSHF, SLHF, BLH
|-
|Levels
|40-137
| -
|900, 850, 800, 700, 600, 500, 400, 300, 250, 200, 100 hPa
|1000, 975, 950, 925, 900, 875, 850, 825, 800, 775, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 225, 200, 175, 150, 125, 100, 70, 50, 30, 20, 10, 70, 5, 3, 2, 1 hPa
| -
|-
|Times available
|colspan="5"|00, 03, 06, 09, 12, 15, 18, 21 UTC
|}

Note that the variables LSP, CP, SF, SSHF, SLHF, and BLH are derived as prognostic variables from the short-range forecast. Data valid at 00, 03, 06, 09 UTC are 06, 09, 12, 15 h forecast of the 18 UTC forecast of the previous day. Accordingly, data valid at 12, 15, 18, 21 UTC are 06, 09, 12, 15 h forecast of the 06 UTC forecast. The prognostic variables are accumulated over the previous 1 h.

Please see [https://confluence.ecmwf.int//display/CKB/ERA5+data+documentation#ERA5datadocumentation-Parameterlistings ECMWF ERA5 data documentation] for parameter abbreviations.

The folder '''slope''' contains the following variables (see [https://doi.org/10.1002/qj.2605 Papritz and Spengler, 2015], for further details on meaning of variables):

{| class="wikitable"
!colspan="1"|Variable name
!colspan="1"|Description
!colspan="1"|Equation
!colspan="1"|Units
!colspan="1"|Notes
|-
|slope
|Slope of isentropic surface
| S = abs(gradθz)
|m m-1
|Instantaneous
|-
|tilt
|Tendency in slope due to tilting
| gradθz /S · gradθ wid
|m m-1 s-1
|Instantaneous
|-
|diab
|Tendency in slope due to diabatic heating
| -dz/dθ gradθz /S · gradθ (dθ/dt)
|m m-1 s-1
|Accumulated over 6-hour period centred on instantaneous time step
|-
|iadv
|Tendency in slope due to isentropic advection
| '''u''' · gradθS
|m m-1 s-1
|Instantaneous
|-
|w_ci
|Cross isentropic vertical velocity
| w - wiu
|m s-1
|Instantaneous
|-
|mask_slope
|Combination of masks from slope, diab and tilt
| -
|0-1
|Instantaneous
|}

'''Conditions of use:''' When using the ERA5 data from this archive please make sure to reference "[https://cds.climate.copernicus.eu/cdsapp#!/home Copernicus Climate Change Service (C3S) (2017): ERA5: Fifth generation of ECMWF atmospheric reanalyses of the global climate. Copernicus Climate Change Service Climate Data Store (CDS)], date of citation" and acknowledge "ECMWF for providing ERA-5 data“. Also, please acknowledge "Michael Sprenger (ETH Zurich)“ for the support in providing the data.