Abstract: Trends of surface temperature at rapidly growing urban sites during the last three to five decades are compared to those at non-urban sites, temperatures at 70 kPa, and sea surface temperature at a coastal Pacific station. ...

Abstract: A statistical relationship is found to exist between autumn rainfall in the central equatorial Pacific and subsequent winter precipitation in the southern United States. In a case study, it was found that wet winters in ...

Abstract: Recurrent drought episodes are a signature feature of the climate of the central United States. Using a particular set of definitions, this study examines some of the basic statistical features of previous drought episodes. ...

Abstract: This study provides an empirical description of intraseasonal rainfall variability within the North American monsoon (NAM) region. Applying particular definitions to historical daily rainfall observations, it demonstrates ...

Abstract: This note provides a first look at a recently developed long-term climatology of transient synoptic features in northern Mexico. Key features investigated include inverted troughs, cutoff lows, cold fronts, and open troughs ...

Abstract: An alternative measure of time-aggregated precipitation for use in short-term climate studies is developed. This measure, precipitation frequency, is defined as the number of days per month or season with total amounts ≥ ...

Abstract: This paper compares long-term seasonal means of atmospheric and oceanic fields for the recent 1969?80 period, relative to the earlier 1947?66 base period. Difference maps of North Pacific sea surface temperature (SST), 700 ...

Abstract: The global climate during 1998 was affected by opposite extremes of the ENSO cycle, with one of the strongest Pacific warm episodes (El Niño) in the historical record continuing during January?early May and Pacific cold ...