1. Envisat Validation Workshop
ASAR Wave Mode:
Introduction & Status
Nicholas Walker

2. Topics
Data Status
Cal Val Status
The agenda

3. Data Status
Level 1:
Clean version of level 1 algorithm implemented at PDS on 16th Nov
Data fed into the Ifremer Collocation System
Bad data removed from collocation system
Level 2:
The Level 2 operational processing algorithm will be delivered at the PDS today, 12/12/2002
To be installed next week

4. Cal/Val Status Level 1
Independent calibration constants converging
Validation advanced
No problems observed
Behaves as expected
Harald, orbits, several thousand imagettes
FINAL recommendations for parameter optimisation including changing look bandwidth

5. Cal/Val Status Level 2
Large scale validation & algorithm comparison not started
Lack of routine production of Level 2 data
Harald, 22 orbits collocated data
No unexpected problems observed with limited data set
Works perfectly in swell dominated areas
Optimised in swell dominated areas
Little more optimisation required for non swell dominated areas

6. Agenda Harald Johnsen (NORUT)
Optimisation of Level 1 products & preliminary validation of Level 2 products
Bertrand Chapron, Fabrice Collard (Ifremer)
Ocean geophysical features inferred from ASAR
Frank Melger (ARGOSS)
Preliminary performance of the WVS & WVW ASAR Wave products
Susanne Lehner, Johannes Schulz-Stellenfleth (DLR)
First results on wind speed & sea state measurements from ASAR Wave data
Jean Michel Lefevre, Lotfi Aouf (Meteo France)
Preliminary results on assimilation of level 2 products
Daniele Hauser (CETP)
The VALPARESO experiment, status & overview of the collected data set