= PDAF at the EGU General Assembly 2021 =

The research group developing PDAF will be present at the EGU General Assembly from April 19 to 30, 2021 online.

Members of the group give following presentations:

== Short Course ==

**SC5.14: Practical data assimilation with the Parallel Data Assimilation Framework**[[BR]]
Convener: Lars Nerger | Co-conveners: Wolfgang Kurtz, Nabir Mamnun, Qi Tang, Gernot Geppert
Friday, 30 April, 10:00 - 11:00, <a target="_blank" href="https://meetingorganizer.copernicus.org/EGU21/session/38988">Online</a>

In this Short Course we provide an overview of ensemble data assimilation and how to apply it using PDAF.[[BR]]

For the hands-on example we will provide a tutorial version of PDAF that will be downloadable without registration. The download link will be announced during the short course. 

Tutorial code: [http://pdaf.awi.de/EGU2021/download.php Tutorial code package]
Slides: [http://pdaf.awi.de/EGU2021/Tutorial_EGU21.pdf Full set of Slides]

== Presentations ==

**Assimilation of satellite sea surface temperature and profile observations into a coupled ocean-atmosphere model**[[BR]]
Qi Tang, Dmitry Sidorenko, and Lars Nerger[[BR]]
Friday, 12 April, 12:00 - 12:15, Session HS1.2.9, Room 2.15

== Poster Presentation ==

**[http://pdaf.awi.de/files/Nerger_etal_AWICM-PDAF_EGU2019.pdf Building an Efficient Ensemble Data Assimilation System for Coupled Models with the Parallel Data Assimilation Framework]**[[BR]]
Lars Nerger, Qi Tang, Longjiang Mu, and Dmitry Sidorenko[[BR]]
Friday, 12 April, 14:00 - 15:45, Session HS1.2.9, Hall A, Poster A.14

== Presentations by PDAF Users ==

There will also be presnetations by different users of PDAF, for example[[BR]]


**How large is the added value of Swarm time-variable gravity if assimilated into WGHM?**[[BR]]
Olga Engels, Jürgen Kusche, Kerstin Schulze, Helena Gerdener, Christina Lück, and Petra Döll[[BR]]
Wednesday, 10 April, 16:15-18:00, Session G3.3, Hall X3, Poster X3.15

**Assimilation of sea surface temperature in BSH operational circulation model for the North Sea and Baltic Sea**[[BR]]
Xin Li, Lars Nerger, and Thorger Bruening[[BR]]
Friday, 12 April, 10:45–12:30, Session OS4.11, Hall X4, Poster X4.99

** Soil moisture data assimilation in high-resolution integrated models at the hillslope scale**[[BR]]
Harrie-Jan Hendricks Franssen, Sebastian Gebler, Wolfgang Kurtz, Valentijn Pauwels, Stefan Kollet, and Harry Vereecken[[BR]]
Friday, 12 April, 14:00–15:45, Sesion HS1.2.9, Hall A, Poster A.13

** Impact of Parameter Variability and Grid Coarsening on Ensemble Simulations of a Coupled Land Surface-Subsurface Model with Implications for Data Assimilation **[[BR]]
Gabriele Baroni, Emilio Sanchez-Leon, Bernd Schalge, Barbara Haese, Daniel Erdal, Natascha Brandhorst, Ching Pui Hung, Insa Neuweiler, Harrie-Jan Hendricks Franssen, and Olaf A. Cirpka[[BR]]
Friday, 12 April, 14:00–15:45, Session HS1.2.9, Hall A, Poster A.16

** Evaluation of ensemble simulations of a coupled atmosphere-land-surface-subsurface model for cross-compartmental data assimilation**[[BR]]
Bernd Schalge, Harrie-Jan Hendricks Franssen, Stefan Kollet, Tobias Finn, Barbara Haese, Emilio Sánchez, and Clemens Simmer[[BR]]
Friday, 12 April, 14:00–15:45, Sesion HS1.2.9, Hall A, Poster A.17

**Understanding large scale transport: ICON-ART N2O satellite data assimilation with an independent POLSTRACC validation**[[BR]]
Jennifer Schröter, Peter Hoor, Jens Krause, Lars Nerger, Roland Ruhnke, Björn-Martin Sinnhuber, and Peter Braesicke[[BR]]
Friday, 12 April, 14:00 - 15:45, Session HS1.2.9, Hall A, Poster A.30