VALIDATION OF ENVISAT PRODUCTS FROM SAOZ BALLOON FLIGHTS
Dedicated balloon flights have been organised in order to validate the chemical instruments (GOMOS, MIPAS and SCIAMACHY) on-board the ENVISAT satellite. One of the validation instruments is the uv-visible SAOZ spectrometer dedicated to the measurement of the vertical profiles of minor atmospheric co...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.211.9346 http://envisat.esa.int/pub/ESA_DOC/envisat_val_1202/proceedings/ACV/balloon/08_goutail.pdf |
| Summary: | Dedicated balloon flights have been organised in order to validate the chemical instruments (GOMOS, MIPAS and SCIAMACHY) on-board the ENVISAT satellite. One of the validation instruments is the uv-visible SAOZ spectrometer dedicated to the measurement of the vertical profiles of minor atmospheric constituents, mainly O3, NO2, BrO, H2O, O2, but also O4 (the dimer of O2), optical extinction, pressure and temperature. SAOZ is a light instrument, easy to be launched, even in windy conditions and since the beginning of the Calibration/Validation period 4 flights have occured at various latitudes allowing to conduct comparisons with satellite coincident measurements in different conditions. Here, we report on results between SAOZ and GOMOS vertical profiles in the Arctic and mid-latitudes in summer together with the first very preliminary comparison of SAOZ and SCIAMACHY NO2 limb profiles. The analysis is still in progress as only few orbits of GOMOS have been provided to the validation team and even none of the SCIAMACHY and MIPAS profiles but the results concerning GOMOS look very promising. 1. DESCRIPTION OF THE SAOZ SPECTROMETER Fig. 1 SAOZ housing SAOZ (Système D'Analyse par Observations Zénithales) is a UV-visible spectrometer making measurements by the solar occultation method during the ascent of the balloon and from float |
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