wp_no=1001
wp_name=GOME-2 total O3 column development
list_of_product_IDs=O3M-01,O3M-06,O3M-41,O3M-42
wp_start=03/2017
wp_end=02/2022
wp_responsible=BIRA
no_of_participants=2
BIRA 2 2 1 1 1 0 10000 
DLR 0.8 0.8 0.8 0.8 0.8 0 15568  

wp_objectives:
The objective of this WP is the continuous development and improvement of the operational GOME-2 total O3 product.

wp_methodology:

DOAS Algorithm (NRT)
- (DLR) Evaluation of available ozone cross sections data-sets (e.g. improved GOME-2 FM2 data set)
- (BIRA) Investigation and correction for time-dependent (and possibly along orbit) slit function changes
- (BIRA) Optimisation of retrieval settings for Metop-C

AMF/VCD calculation (NRT)
- (BIRA) Analyze the use of improved a priori ozone profiles (e.g. new tropospheric ozone climatology) 
- (DLR) Implementation of a polarization correction in the RTM 
- (DLR) Adaptation of algorithm for averaging kernel information
- (DLR) Improved treatment of clouds and aerosols, AMF calculations using cloud as layers (CAL) 
- (BIRA) Use of an improved surface albedo climatology for the AMF calculation
- (DLR) Algorithm adaptation to Metop-C
- (BIRA) Analyse consistency between total ozone columns from GOME-2/Metop-A/B/C 

GODFIT (OFFLINE)
- (BIRA) Transfer of CCI direct-fitting algorithm to ACM SAF (Metop-A and Metop-B)
- (BIRA) Adaptation of algorithm for Metop-C
- (BIRA) Analyze consistency with NRT DOAS algorithm and CCI product

wp_datasources:
- GOME-2 level 1 product

wp_deliverables:
- GOME-2 total O3 column algorithm
- Updates to ATBD

End