Retrieval of SCIAMACHY CO, CH4, and CO2

A contribution to ACCENT-TROPOSAT-2, Task Group 1

Annemieke Gloudemans

SRON – National Institute for Space Research, Sorbonnelaan 2, NL 3584 CA Utrecht
Tel.:  +31-(0)30-2535832
Fax:  +31-(0)30-2540860

The retrieval of the greenhouse (related) trace gases CH4, CO, and CO2 using measurements from the ENVISAT instrument SCIAMACHY. A well established iterative maximum likelihood method will be used and further developed to include necessary instrument calibration corrections and a refinement of the atmospheric forward modelling. The resulting total columns will be compared with those from other independent retrieval algorithms within AT2 Task Group 1. This work will be carried out in close collaboration with the AT2 Task Group 3 proposal “Validation of SCIAMACHY CO, CH4, and CO2”.

18 months objectives:

Retrieval of CH4, CO, and CO2 total columns from SCIAMACHY for the year 2003 (see Figure 1).

Detailed comparisons of CH4, CO, and CO2 total columns from independent retrieval algorithms for one month in 2003.

Time schedule

 

2004

2005

2006

2007

2008

2009

All Objectives

****

****

**

**

**

*

Approximate manpower and cost

 

2004

2005

2006

2007

2008

2009

Personnel / man-years

2

2

1

1

1

0.5

Yearly cost (kEuro)

130

130

65

65

65

35

Likely funding agencies

The SRON/NIVR National User Support Programme (SRON-GO), and the EU

Co-workers

Dr. Hans Schrijver, Dr. Wouter Hartmann and Prof. Dr. Ilse Aben

          SRON – National Institute for Space Research
          Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands

Figure 1. Monthly mean cloud-free CH4 total columns for February 2004 from the SCIAMACHY IMLM algorithm normalised to the surface elevation (instrument related errors < 0.8 x 1018 molec/cm2). From: Straume et al. 2005, Advances in Space Research, proceedings COSPAR 2004).


 

 

 

 


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