Atmosphere and Climate: Studies by Occultation Methods
This book presents carefully edited and peer-reviewed papers from the 2nd International Workshop on Occultations for Probing Atmosphere and Climate (OPAC-2), held in Graz, Austria. It starts with a general introductory paper and proceeds to address the full range from methodology in general via specific occultation methods (GNSS-LEO, LEO-LEO, stellar and solar) to the use of occultation data, with focus on atmospheric physics, meteorology and climate.
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This book presents carefully edited and peer-reviewed papers from the 2nd International Workshop on Occultations for Probing Atmosphere and Climate (OPAC-2), held in Graz, Austria. It starts with a general introductory paper and proceeds to address the full range from methodology in general via specific occultation methods (GNSS-LEO, LEO-LEO, stellar and solar) to the use of occultation data, with focus on atmospheric physics, meteorology and climate.
GPS radio occultation with CHAMP and GRACE : recent results3Sensitivity of stratospheric retrievals from radio occultations on upper boundary conditions17Error characteristics of refractivity profiles retrieved from CHAMP radio occultation data27Refractivity biases in GNSS occultation data37GOMOS ozone profiles at high latitudes : comparison with Marambio and Sodankyla Sonde measurements47Ozone and temperature retrieval results from GOMOS validated with CHAMP and ECMWF55Modeling errors of GOMOS measurements : a sensitivity study67Asymptotic wave optics methods in inversion and direct modeling of radio occultations : recent achievements81Processing radio occultation data by full spectrum inversion techniques : an overview and recent developments95Evaluation of the processing of radio occultation signals by reconstruction of the real signals113Radio holographic filtering of noisy radio occultations127Preparing for COSMIC : inversion and analysis of ionospheric data products137The operational EPS GRAS measurement system147ROSA : the Italian space agency GPS radio occultation receiver : signal tracking characteristics and terrestrial measurement campaign157Tropospheric water vapor from LEO-LEO occultation : estimation by differential attenuation measurements near 20 GHz169Processing X/K band radio occultation data in presence of turbulence : an overview183Assimilation of GNSS radio occultation data into numerical weather prediction195Observation operators for the assimilation of occultation data into atmospheric models : a review205Analysis of atmospheric and ionospheric wave structures using the CHAMP and GPS/MET radio occultation database225Are we observing mountain waves above the Andes range from GPS occultation profiles?243Analysis of seasonal and daily mid-latitude tropopause pressure using GPS radio occultation data and NCEP-NCAR reanalyses253CHAMP radio occultation detection of the planetary boundary layer top265Monitoring climate variability and change by means of GNSS data275Climate benchmarking using GNSS occultation287Global climatologies based on radio occultation data : the CHAMPCLIM project303Pre-operational retrieval of radio occultation based climatologies315Assimilation of GNSS radio occultation profiles into GCM fields for global climate analysis325
