FastFind »   Lastname: doi:10.1029/ Year: Advanced Search  

AGU: Geophysical Research Letters

 

Keywords

  • GPS
  • radio occultation
  • climate

Index Terms

  • Atmospheric Processes: Remote sensing
  • Global Change: Climate variability
  • Atmospheric Processes: Climate change and variability

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L24806, 6 PP., 2009
doi:10.1029/2009GL041046

Apparent precision of GPS radio occultation temperatures

Paul W. Staten

Department of Atmospheric Sciences, University of Utah, Salt Lake City, Utah, USA

Thomas Reichler

Department of Atmospheric Sciences, University of Utah, Salt Lake City, Utah, USA

The abundant atmospheric data provided by radio occultation (RO) via the Global Positioning System satellite network have improved short and long-term forecasts and have demonstrated the potential to provide a long-term, consistent, and independent climate dataset. Previous studies have already verified the consistency and reliability of the RO method, listing a range of precision estimates. Uncertainties arising during temperature retrievals, and confounding effects of atmospheric variability, have made the precision of RO temperature data difficult to determine. In this paper, we introduce the concept of apparent precision, and describe a simple, robust method for estimating the apparent temperature precision using data from the COSMIC project. We examine apparent RO temperature precision by latitude, and find it to be somewhat lower than previous estimates. We attribute this to apparent precision being a function of the true precision plus representativeness errors.

Received 18 September 2009; accepted 24 November 2009; published 22 December 2009.

Citation: Staten, P. W., and T. Reichler (2009), Apparent precision of GPS radio occultation temperatures, Geophys. Res. Lett., 36, L24806, doi:10.1029/2009GL041046.

Cited By

Please wait one moment ...