Records of 1 April snow water equivalent (SWE) are examined here using multiple linear regression against reference time series of temperature and precipitation. This method permits 1) an examination of the separate roles of temperature and precipitation in determining the trends in SWE; 2) an estimation of the sensitivity of...
Observations of snow water equivalent (SWE) in the Pacific Northwest are examined and compared with variability and trends in temperature and precipitation at nearby climate stations. At most locations, especially below about 1800 m, substantial declines in SWE coincide with significant increases in temperature, and occur in spite of increases...
A previous comparison of data from the Halogen Occultation Experiment (HALOE) and of output from the NCAR Community Climate Model (CCM2) in austral spring overstated the effect of dehydration in the southern polar vortex on lower strato spheric water vapor in part due to shortcomings in the HALOE retrieval algorithm...
The application of general circulation models (GCMs) to stratospheric chemistry and transport both permits and requires a thorough investigation of stratospheric water vapor. The National Center for Atmospheric Research has redesigned its GCM, the Community Climate Model (CCM2), to enable studies of the chemistry and transport of tracers including water...
This paper shows a small sampling of the atmospheric fields provided by the
Moderate Resolution Imaging Spectroradiometer (MODIS), which is installed on both the
Terra and Aqua satellites of the Earth Observing System. These fields include macroscale
fields like cloud fraction, cloud top pressure, cloud optical depth, and column water...
Coastal upwelling helps set the physical context for marine ecosystems, and upwelling zones are among the most productive regions of the global ocean. Unlike earlier models, two state‐of‐the‐art climate models exhibit little change during the next century in the magnitude and seasonality of coastal upwelling, but climate models are still...
In common with much of the western United States, the Pacific Northwest (defined in this paper as Washington and Oregon) has experienced an unusual number of droughts in the past decade. This paper describes three of these droughts in terms of the precipitation, temperature, and soil moisture anomalies, and discusses...
A snowpack model sensitivity study, observed changes of snow cover in the NOAA satellite dataset, and snow cover simulations from the Coupled Model Intercomparison Project phase 3 (CMIP3) multimodel dataset are used to provide new insights into the climate response of Northern Hemisphere (NH) snow cover. Under conditions of warming...
Connections, sometimes tenuous, have previously been noted between stratospheric
Kelvin waves and several stratospheric trace constituents. The present study finds
evidence of Kelvin wave signatures in ozone from the Microwave Limb Sounder (MLS)
and Cryogenic Limb Array Etalon Spectrometer (CLAES) instruments aboard the Upper
Atmosphere Research Satellite. Predominant variations near...