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Get Atmosphere and Climate: Studies by Occultation Methods PDF

By J. Wickert, T. Schmidt, G. Beyerle, G. Michalak, R. König, S. Heise, C. Reigber (auth.), Dr. Ulrich Foelsche, Prof. Gottfried Kirchengast, Dr. Andrea Steiner (eds.)

ISBN-10: 3540341161

ISBN-13: 9783540341161

ISBN-10: 3540341218

ISBN-13: 9783540341215

Since the early use of the occultation dimension precept for sounding pla- tary atmospheres and ionospheres, its exploitation in atmospheric distant sensing has noticeable super advances. during this e-book we concentrate on sensors on Low Earth Orbit (LEO) satellites, which take advantage of sunlight, lunar, stellar, GNSS (Global Navi- tion satellite tv for pc Systems), and LEO-crosslink indications for looking at the Earth's - mosphere and weather. The tools all percentage the foremost homes of self-calibration, excessive accuracy and vertical answer, international insurance, and (if utilizing radio indications) all-weather ca- bility. The atmospheric parameters bought expand from the basic va- ables temperature, density, strain and water vapor through hint gases, aerosols and cloud liquid water to ionospheric electron density. Occultation info are hence of excessive price in a variety of fields together with weather tracking and learn, atmospheric physics and chemistry, operational meteorology, and ionospheric physics. nd the two foreign Workshop on Occultations for Probing surroundings and weather – OPAC-2 – was once held September 13–17, 2004, in Graz, Austria. OPAC-2 geared toward supplying an informal discussion board and stimulating surroundings fertilizing clinical discourse, co-operation projects, and mutual studying and aid among individuals of all diversified occultation groups. The workshop was once attended by means of forty contributors from 12 diversified international locations who actively contributed to a systematic programme of top quality and to an exceptional workshop surroundings, which used to be judged by way of the contributors to have absolutely met the goals expressed.

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Extra info for Atmosphere and Climate: Studies by Occultation Methods

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Fisher (ECMWF Reading, UK, pers. communications, 2004) provided global error estimates of ECMWF analyses in form of standard deviations for temperature, specific humidity, and surface pressure, and of vertical error correlations for temperature and specific humidity. Temperature T (K), water 30 A. K. Steiner et al. Fig. 1. Combined refractivity error as a function of height for the global and the latitudinal ensembles (horizontal panel rows), globally (left), Northern Hemisphere (middle), Southern Hemisphere (right).

Difference between GOMOS and soundings, on left Marambio and on right Sodankyl¨ a. The solid line is the relative difference between mean values and the dashed line the relative difference between median values. The numbers on right denote the number of pairs compared at each altitude. is good: between the altitude range 15 km to 30 km the bias is around ±5 % at Marambio and up to −10 % at Sodankyl¨ a. The good vertical resolution of the GOMOS instrument shows that small-scale structures of a few kilometers can be seen in the data.

Disagreement have been found (see Fig. 5) and, indeed, these most obvious cases have been identified to represent conditions where either the station is inside the polar vortex and the GOMOS measurements outside the vortex or vice versa. In Fig. 5 the total ozone measured by NASAs TOMS instrument (NASA-GSFC 2005) at Marambio is around 150 DU and at GOMOS measurement around 225 DU. This huge difference is clearly seen in the profiles as well. The averages over the profiles compared are shown in Fig.

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Atmosphere and Climate: Studies by Occultation Methods by J. Wickert, T. Schmidt, G. Beyerle, G. Michalak, R. König, S. Heise, C. Reigber (auth.), Dr. Ulrich Foelsche, Prof. Gottfried Kirchengast, Dr. Andrea Steiner (eds.)


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