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UP: Fachverband Umweltphysik
UP 2: Methoden - Fernerkundung
UP 2.1: Hauptvortrag
Dienstag, 18. März 2014, 10:00–10:30, MAG 100
Creating climate data records from operational meteorological microwave humidity sounders — •Stefan Buehler1, Viju John2, and Mathias Milz3 — 1University of Hamburg — 2Met Office (UK) — 3Lulea University of Technology
We have now a more than 20 years data record from meteorological humidity sounders of the SSM/T2, AMSU-B, MHS family. These three instrument types are quite similar, but not identical in their characteristics. Furthermore, each of these instruments exists on different satellites. Copies of the same instrument type on different satellites are very similar, but also they are not completely identical. Having so many instances of broadly the same instrument opens unique possibilities, but also presents challenges.
When using all instruments together synergistically, it is important that they are properly inter-calibrated. The talk discusses methods to achieve this. With proper intercalibration, instruments that coexist in time can be used to reconstruct the diurnal cycle of atmospheric humidity. Also, the global time series can be reconstructed from the total data record. However, in that case orbit drift is an important issue in addition to instrument calibration. The talk discusses also options to address that issue.