Homogenization of radiosonde temperature time series using ERA-40 analysis feedback information.

Title
Homogenization of radiosonde temperature time series using ERA-40 analysis feedback information.
Report
Date Published
06/2005
Series/Collection
ERA-40 Project Report Series
Document Number
23
Author
L. Haimberger
Event Series/Collection
ERA Report
Abstract This report describes a method developed for detecting and removing artificial breaks in radiosonde time series. These breaks affect the applicability of radiosonde time series for climate change detection. They also affect the quality of reanalyses assimilating these data, particularly in the pre-satellite era. While radiosondes measure temperature, humidity and wind, the analysis here is restricted to temperature time series.