Satellite Validation using Ground Based Spectroscopic Techniques

A contribution to subproject ACCENT-TROPOSAT-2, Task Group 3

Bo Galle

Chalmers University of Technology, Department of Radio and Space Science
412 96 Göteborg, Sweden
Telephone: +46 31 7725654
Fax: +46 31 7721884

The major contribution from the Optical Remote Sensing group at Chalmers is to participate in the development of validation strategies and the validation of tropospheric satellite data products using existing data.

Since 1994 the group has been operating a ground-based high resolution Fourier Transform Spectrometer for Solar spectroscopy at the site Harestua (60oN, 11oE) in southern Norway, as part of the global network NDSC. The work involves development of optimal strategies for comparing total columns and profiles from satellites with corresponding entities derived from ground-based FTIR spectra, hereby taking into account the different vertical resolution, averaging kernels and viewing geometries of the two techniques, and focusing on the troposphere.

In a second project a strategy for satellite and model validation will be developed based on a mobile and stationary UV-VIS/IR systems. The idea is to use direct and scattered Sunlight to derive total columns of tropospheric molecules averaged over distances comparable to the grid-size obtained from satellites and used in GCM models. In specific we will concentrate on emissions from the Megacities Mexico City and Beijing.

We are presently involved in establishing a network of MAX-DOAS instruments on actively degassing volcanoes (NOVAC, Network for Observation of Volcanic and Atmospheric Change). The main purpose of this network is monitoring of SO2 and BrO emissions for volcanic risk assessment. However, the data will also be exploited for satellite validation, constituting our third contribution to TROPOSAT.

Approximate manpower and cost

 

2004

2005

2006

2007

2008

2008

Personnel / man-years

1

1

1

1

1

1

Yearly cost (kECU)

70

70

70

70

70

70

Likely funding agencies

CEC; Swedish National Space Board, The Swedish Research Council

Co-worker

Dr. Johan Mellqvist

Chalmers University,

Department of Radio and Space Science

 


 Return to the top of the page