Abstract: This paper considers the use of upper-air data from radiosondes in long-term climate studies. The accuracy and precision of radiosonde humidity measurements, including temperature and pressure measurements used in calculating ...

Abstract: Climatological annual and seasonal dewpoint, specific humidity, and relative humidity maps for the United States are presented using hourly data from 188 first-order weather stations for the period 1961?90. Separate ...

Abstract: Different nations use different algorithms or other techniques to convert temperatures and relative humidities from radiosonde observations to dewpoint depressions. Thus, it is possible for identical measured values to ...

Abstract: With radiosonde data from 15 Northern Hemisphere stations, surface-to-400-mb column water vapor is computed from daytime soundings for 1988?1990. On the basis of simultaneous surface visual cloud observations, the data are ...

Abstract: Climatological surface temperature and humidity variables for China are presented based on 6-hourly data from 196 stations for the period of 1961?90. Seasonal and annual means for daytime, nighttime, and the full day are ...

Abstract: Radiosonde data from a global 118-station network are used to determine the spatial and temporal scales of variability of tropospheric water vapor. Various sources of possible error and bias in the data are analyzed. Changes ...

Abstract: Simulations of humidity from 28 general circulation models for the period 1979?88 from the Atmospheric Model Intercomparison Project are compared with observations from radiosondes over North America and the globe and with ...

Abstract: Radiosonde data have been used, and will likely continue to be used, for the detection of temporal trends in tropospheric and lower-stratospheric temperature. However, the data are primarily operational observations, and ...