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GOME HCHO data
For the European project POET, a complete time series of GOME tropospheric HCHO columns has been created which can be downloaded as gridded monthly averages.
For a description of the method used to derive the HCHO columns or other questions, please contact Folkard Wittrock.
GOME tropospheric excess HCHO columns Version 0.9 (preliminary):
For GOME tropospheric excess NO2 see here.
GOME tropospheric excess HCHO columns Version 1.0 (daily values for 1997):