Atmosphere and Climate

1. Front Matter

   Pages i-x

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2. Radio Occultation with CHAMP

   1. Front Matter

      Pages 1-1

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   2. GPS Radio Occultation with CHAMP and GRACE: Recent Results

      • J. Wickert, T. Schmidt, G. Beyerle, G. Michalak, R. König, S. Heise et al.

      Pages 3-16

   3. Sensitivity of Stratospheric Retrievals from Radio Occultations on Upper Boundary Conditions

      • C. O. Ao, G. A. Hajj, B. A. Iijima, A. J. Mannucci, T. M. Schrøder, M. de la Torre Juárez et al.

      Pages 17-26

   4. Error Characteristics of Refractivity Profiles Retrieved from CHAMP Radio Occultation Data

      • A. K. Steiner, A. Löscher, G. Kirchengast

      Pages 27-36

   5. Refractivity Biases in GNSS Occultation Data

      • G. Beyerle, S. Heise, J. Kaschenz, G. König-Langlo, C. Reigber, T. Schmidt et al.

      Pages 37-43

3. Stellar Occultation with GOMOS

   1. Front Matter

      Pages 45-45

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   2. GOMOS Ozone Profiles at High Latitudes: Comparison with Marambio and Sodankylä Sonde Measurements

      • J. Tamminen, J. A. Karhu, E. Kyrölä, S. Hassinen, E. Kyrö, A. Y. Karpechko et al.

      Pages 47-54

   3. Ozone and Temperature Retrieval Results from GOMOS Validated with CHAMP and ECMWF

      • C. Retscher, G. Kirchengast, A. Gobiet

      Pages 55-66

   4. Modeling Errors of GOMOS Measurements: A Sensitivity Study

      • V. F. Sofieva, J. Tamminen, E. Kyrölä, GOMOS CAL/VAL Team

      Pages 67-78

4. Wave Optics Algorithms for the Processing of Radio Occultation Data

   1. Front Matter

      Pages 79-79

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   2. Asymptotic Wave Optics Methods in Inversion and Direct Modeling of Radio Occultations: Recent Achievements

      • M. E. Gorbunov, K. B. Lauritsen

      Pages 81-94

   3. Processing Radio Occultation Data by Full Spectrum Inversion Techniques: An Overview and Recent Developments

      • A. S. Jensen, H. -H. Benzon, A. S. Nielsen, M. S. Lohmann

      Pages 95-112

   4. Evaluation of the Processing of Radio Occultation Signals by Reconstruction of the Real Signals

      • A. S. Jensen, H. -H. Benzon, A. S. Nielsen, C. Marquardt, M. S. Lohmann

      Pages 113-125

   5. Radio Holographic Filtering of Noisy Radio Occultations

      • M. E. Gorbunov, K. B. Lauritsen

      Pages 127-134

5. Future GNSS Occultation Missions and the LEO-LEO Occultation Concept

   1. Front Matter

      Pages 135-135

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   2. Preparing for COSMIC: Inversion and Analysis of Ionospheric Data Products

      • S. Syndergaard, W. S. Schreiner, C. Rocken, D. C. Hunt, K. F. Dymond

      Pages 137-146

   3. The Operational EPS GRAS Measurement System

      • J. -P. Luntama

      Pages 147-156

   4. ROSA: The Italian Space Agency GPS Radio Occultation Receiver. Signal Tracking Characteristics and Terrestrial Measurement Campaign

      • R. Notarpietro, A. Zin, G. Perona, L. Corgnati, M. Gabella

      Pages 157-168

   5. Tropospheric Water Vapor from LEO-LEO Occultation: Estimation by Differential Attenuation Measurements near 20 GHz

      • F. Argenti, F. Cuccoli, L. Facheris, E. Martini

      Pages 169-181

Since the early use of the occultation measurement principle for sounding pla- tary atmospheres and ionospheres, its exploitation in atmospheric remote sensing has seen tremendous advances. In this book we focus on sensors on Low Earth Orbit (LEO) satellites, which exploit solar, lunar, stellar, GNSS (Global Navi- tion Satellite Systems), and LEO-crosslink signals for observing the Earth's - mosphere and climate. The methods all share the key properties of self-calibration, high accuracy and vertical resolution, global coverage, and (if using radio signals) all-weather ca- bility. The atmospheric parameters obtained extend from the fundamental va- ables temperature, density, pressure and water vapor via trace gases, aerosols and cloud liquid water to ionospheric electron density. Occultation data are therefore of high value in a wide range of fields including climate monitoring and research, atmospheric physics and chemistry, operational meteorology, and ionospheric physics. nd The 2 International Workshop on Occultations for Probing Atmosphere and Climate – OPAC-2 – was held September 13–17, 2004, in Graz, Austria. OPAC-2 aimed at providing a casual forum and stimulating atmosphere fertilizing scientific discourse, co-operation initiatives, and mutual learning and support amongst members of all different occultation communities. The workshop was attended by 40 participants from 12 different countries who actively contributed to a scientific programme of high quality and to an excellent workshop atmosphere, which was judged by the participants to have fully met the aims expressed.

• Inversion
• Meteorology
• Troposphere
• Weather
• atmosphere
• spheric
• remote sensing/photogrammetry

• Wegener Center for Climate and Global Change (WegCenter), University of Graz, Graz

  Ulrich Foelsche, Gottfried Kirchengast, Andrea Steiner

• Institute for Geophysics, Astrophysics, and Meteorology (IGAM), University of Graz, Graz, Austria

  Ulrich Foelsche, Gottfried Kirchengast, Andrea Steiner

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