Terrestrial Radiation Spectrum From Space!
surface!
Composite of blackbody radiation
spectra for different T
Sahara
troposphere
Atmospheric T profile
Meso.
stratosphere
Strat.
Mediterranean
Trop.
Antarctica
15 µm CO2 Absorption Band
30 km
10 km
[Wallace and Hobbs, 2006]
Tropospheric Emission Spectrometer (TES) CO2
Red arrow indicates the change in radiance at 710 cm-1
due to change in CO2 at 10 km
[Kulawik et al., ACP, 2010]
•
The 2 band between 680-725 cm-1 is sensitive mainly to CO2 in the upper troposphere and lower stratosphere
•
The radiance in the spectral regions 970-990 and 1070-1110 cm-1 is sensitive to changes in CO2 in the middle and lower troposphere
MOPITT Averaging Kernels
Eigenvectors of Averaging Kernel
Matrix
Smoothing Effects of the Averaging Kernel
MOPITT Near infrared and thermal infrared retrievals
Mean surface level CO from MOPITT averaged for Sept – Nov, 2004 – 2008
[Worden et al., JGR, 2010]
Comparison of mean MOPITT and MOZAIC profile over New Delhi, India, on 3 Sept. 2004
Version 5 of the MOPITT retrievals provide a good estimate of the CO profile over land
5
Error Analysis for TES CO Retrievals
Error Analysis for TES O3 Retrievals