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3rd Baltic Earth Conference
Earth system changes and Baltic Sea coasts
Jastarnia, Hel peninsula, Poland
1 - 5 June 2020

BACC II


 

Baltic Earth Working Group on the "Baltic Sea Model Intercomparison Project (BMIP)"


Baltic Sea Model Intercomparison Project (BMIP)

Proceeding from the 2nd Baltic Earth Conference in Helsingør in June 2018 the Baltic Earth project BMIP (Baltic Sea Model Intercomparison Project) has been initiated which aims at an assessment of the performance of different regional climate models in the Baltic Sea. The focus of the investigations will be on hydrographic conditions, the mean and overturning circulation as well as on selected processes like for instance salt water inflows, mixed layer depth, ice formation and upwelling events. The planned coordinated experiments will give insights into the long-term variability and basin-wide significance of conditions and processes and are a continuation of the work by Placke et al. (2018) which was presented on the 2nd Baltic Earth Conference. While their findings aimed at statistical evaluations between different model simulations and observational data in the frame of uncoordinated experiments, the envisaged extended study will be performed with uncoupled hindcast model runs using the same atmospheric forcing and river runoff.

Currently collaborations are planned between research groups from IOW (contributing with models like GETM and MOM), HZG (with ECOSMO and SCHISM), University of Hamburg (with BNSC data), SMHI (with NEMO), DMI (with HBM), and BSH. Further participants are cordially invited. A first one-day kickoff meeting will take place at IOW on 22 November 2018, 10:00-17:00.

References:
Placke, M., Meier, H.E.M., Gräwe, U., Neumann, T., Frauen, C., and Liu, Y. (2018). Long-term mean circulation of the Baltic Sea as represented by various ocean circulation models. Front. Mar. Sci. 5:287, doi:10.3389/fmars.2018.00287


Kickoff meeting of BMIP on 22 November 2018

Location:
Leibniz Institute for Baltic Sea Research Warnemünde,
Conference room villa,
Seestraße 15,
D-18119 Rostock

Accommodation (if required)
A small contingent of rooms (50 EUR per night including breakfast) is reserved at
Hotel "Am Alten Strom"
Am Strom 60/61 
18119 Warnemünde (Rostock)

Please book your room via phone call (+49 381 54 82 31 02) or email (karen.neumann@hotel-am-alten-strom.de) with the code: IOW BMIP.

Participant list

 

Name

Email

Institute

1)

Lars Arneborg

lars.arneborg@smhi.se

SMHI

2)

Florian Börgel

florian.boergel@iowarnemuende.de

IOW

3)

Ute Däwel

ute.daewel@hzg.de

HZG

4)

Christian Dieterich

christian.dieterich@smhi.se

SMHI

5)

Ulf Gräwe

ulf.graewe@io-warnemuende.de

IOW

6)

Matthias Gröger

matthias.groger@smhi.se

SMHI

7)

Iris Hinrichs

iris.hinrichs@uni-hamburg.de

UHH

8) Jaromir Jakacki jjakacki@iopan.pl  IO-PAN

9)

Frank Janssen

Frank.Janssen@bsh.de

BSH

10)

Ye Liu

ye.liu@smhi.se

SMHI

11)

Markus Meier

markus.meier@iowarnemuende.de

IOW, SMHI

12)

Thomas Neumann

thomas.neumann@io-warnemuende.de

IOW

13)

Manja Placke

manja.placke@io-warnemuende.de

IOW

14)

Corinna Schrum

Corinna.Schrum@hzg.de

HZG

15)

Emil Stanev

emil.stanev@hzg.de

HZG

16)

Jian Su

jis@dmi.dk

DMI

Institute abbreviations:
BSH (Bundesamt für Seeschifffahrt und Hydrographie)
DMI (Danish Meteorological Institute)
HZG (Helmholtz-Zentrum Geesthacht)
IOW (Leibniz Institute for Baltic Sea Research Warnemünde)
IO-PAN (Institute of Oceanology, Polish Adademy of Sciences)
SMHI (Swedish Meteorological and Hydrological Institute)
UHH (Universität Hamburg)

Agenda:

– optional –
21 Nov 2018

Arrival in Warnemünde / at IOW
Maybe: Informal icebreaker at a nice restaurant in Warnemünde
Overnight stay at Hotel "Am Alten Strom"

22 Nov 2018

BMIP Kickoff Workshop at IOW
(Seestraße 15, 18119 Rostock, conference room villa)

09:30 – 10:00

Arrival at IOW, Coffee/Tea

10:00 – 10:15

Welcome by Manja and Markus
(Overview of the current status and planned coordinated experiments)

10:15 – 11:00 Introduction into the Baltic Sea setups of MOM, GETM, NEMO, HBM, SCHISM, ECOSMO, etc. and present status

11:00 – 12:00

Project draft
(Discussion about ideas/goals of all participants)

12:00 – 13:00

Lunch at IOW

13:00 – 15:00

Animating the project
(Determination of required output data and formats)

15:00 – 15:15

Coffee & tea break

15:15 – 16:15

Agreement on data processing

16:15 – 17:00

Project fixation
(Final discussions and summary of defined decisions)

17:00

End of the workshop, Departure

– optional –

Overnight stay at Hotel "Am Alten Strom" and departure on 23 Nov 2018

Model setups and data format requirements

Setup for all involved models: For a convenient data handling, arrangements will be made to ensure a uniform data output and structure. It is aspired that the individual modeling groups post-process their data themselves (e.g., interpolation on a regular grid) in order to avoid wrong data handling.

Horizontal resolution

2 nm

Vertical resolution

3 m

Temporal resolution

monthly means of all 3D variables;
daily time series of T, S, u, v at representative stations and depths, e.g., as in Placke et al. 2018:

Stations:  
- BY2 in the Arkona Basin (55.0°N, 14.1°E),
- BY5 at Bornholm Deep (55.3°N, 16.0°E),
- BY15 at Gotland Deep (57.3°N, 20.0°E),
- LL7 in the Gulf of Finland (59.9°N, 24.8°E),
- SR5 in the Bothnian Sea (61.1°N, 19.6°E), and
- F9 in the Bothnian Bay (64.7°N, 22.1°E)

Depths:
0, 15, 30, 60, 80, 125, 200, 225 m

Region

North and Baltic Sea with focus on the Baltic Sea

Boundary conditions

water level observations in Kattegat
(optional RCO boundary conditions)

Baltic Sea topography

can be provided by IOW on demand

Atmospheric forcing

UERRA data provided by SMHI (temporal coverage: 1961-2017/18)
- UERRA project website: http://www.uerra.eu/
- UERRA website at ECMWF with link to data portal: https://software.ecmwf.int/wiki/display/UER
-SMHI UERRA data can be found under HARMONIE/V1

Runoff

will be provided by IOW

Data format requirements:

No exchange of 3D fields! Only post-processed data.

Planned data output

Description

Unit

Model grid (lat, lon,
dep, dx, dy, dz)

latitude, longitude
depth, grid cell dimensions

[degree]
[m]

Temperature (T)

 

[degree Celsius]

Salinity (S)

 

[g kg–1]

Current velocity (u, v)

in zonal and meridional direction

[m s–1]

Overturning circulation (oc)

Zonal/meridional integration of volume transport at each latitude/longitude and depth and subsequent depth integration from bottom towards surface

[m3 s–1]

Mixed layer depth (mld)

 

[m]

Maximum annual ice extent (ice)

Regarding grid cells filled with >=10% ice

[km3]

Sea-ice thickness (di)

 

[m]

Participating institutions


Related links

Baltic Earth Science Steering Group (BESSG)
More...

Baltic Earth Working Groups
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International Baltic Earth Secretariat
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Baltic Earth Senior Advisory Board
More...

Kickoff meeting of BMIP on 22 November 2018
Location
Accommodation
Prelim. participant list
Preliminary agenda
Model setups and data format requirements
Data format requirements
Participating institutions

Presentations


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Last update of this page: 23 Jan 2019