CO2 Satellite data:

Current results and future plans

Joanne Skidmore, Sander Houweling, Wouter Hartmann, Ilse Aben

Space Research Organization Netherlands

Status of Sciamachy CO2 retrieval

Retrieval at 1.6 m (like OCO but less spectral resolution) Slow start due to a number of complications:- Ice layer growth on channels 7

& 8 (not 6!)- Problems with data distribution- Problems with data processors

Recently, good progress First results & interpretation . . .

Note: Sciamachy is not a CO2 dedicated instrument !

Observed monthly mean CO2 March 2003

Observed monthly mean CO2 August 2003

Observed seasonal cycle – 2003

30-60 N

0-30 N

0-30 S

: Max. plausible range

Comparison: Scia CO2 & TOMS AIJuly

October

Next steps

Retrieval issues (e.g. aerosol profiles – MISR data, sensitivity to T) Correlation with other tracers (CH4, O2)

Recurring months of data (reproducibility seems high!)

Collaboration with TransCom colleagues ??