Abstract: Using a reanalysis of the climate of the past half century as a model of temperature variations over the next half century, tests of various data collection protocols are made to develop recommendations for observing system ...

Abstract: No Abstract Available.

Abstract: stimates of trends in planetary boundary layer height over Europe are presented, based on daily radiosonde observations at 25 stations during 1973?2010 and using a bulk Richardson number approach to determine heights. Most ...

Abstract: Trends in radiosonde-based temperatures and lower-tropospheric lapse rates are presented for the time periods 1959?97 and 1979?97, including their vertical, horizontal, and seasonal variations. A novel aspect is that ...

Abstract: Historical changes in instrumentation and recording practices have severely compromised the temporal homogeneity of radiosonde data, a crucial issue for the determination of long-term trends. Methods developed to deal with ...

Abstract: U.S. weather stations operated by NOAA?s National Weather Service (NWS) have undergone significant changes in reporting and measuring cloud ceilings. Stations operated by the Department of Defense have maintained more ...

Abstract: Annual and seasonal correlations between temperature and both specific and relative humidity are presented based on radiosonde station data over the tropical Pacific Ocean and North America. Results are presented for the ...

Abstract: udden stratospheric warmings (SSWs) are large, rapid temperature rises in the winter polar stratosphere, occurring predominantly in the Northern Hemisphere. Major SSWs are also associated with a reversal of the climatological ...

Abstract: The utility of a ?first difference? method for producing temporally homogeneous large-scale mean time series is assessed. Starting with monthly averages, the method involves dropping data around the time of suspected ...