Meteorologic parameters analysis above Dome C made with ECMWF data

Kerstin Geissler; Elena Masciadri

doi:10.1117/12.672299

23 June 2006 Meteorologic parameters analysis above Dome C made with ECMWF data

Kerstin Geissler, Elena Masciadri

Proceedings Volume 6267, Ground-based and Airborne Telescopes; 626719 (2006) https://doi.org/10.1117/12.672299
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

In this paper we present the characterization of some of the principal meteorological parameters extended over 25 km from the ground and over two years (2003 and 2004) above the Antarctic site of Dome C. The data set is composed by 'analyses' provided by the General Circulation Model (GCM) of the European Center for Medium Weather Forecasts (ECMWF) and they are part of the catalog MARS. A monthly and seasonal (summer and winter time) statistical analysis of the results is presented. The Richardson number is calculated for each month of the year over 25 km to study the stability/instability of the atmosphere. This permits us to trace a map indicating where and when the optical turbulence has the highest probability to be triggered on the whole troposphere, tropopause and stratosphere. We finally try to predict the best expected isoplanatic angle and wavefront coherence time (θ_0,max and a τ_0,max) employing the Richardson number maps, the wind speed profiles and simple analytical models of C_N² vertical profiles.

Citation Download Citation

Kerstin Geissler and Elena Masciadri "Meteorologic parameters analysis above Dome C made with ECMWF data", Proc. SPIE 6267, Ground-based and Airborne Telescopes, 626719 (23 June 2006); https://doi.org/10.1117/12.672299

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