Abstract: A method is presented that specifies gamma distributions consistent with the 30- or 90-day outlook for precipitation and the gamma distribution characterizing the corresponding precipitation climatology. The climatological ...

Abstract: A new complex quality assurance (QA) procedure is developed for historical hourly surface airways meteorological data, recently digitized in a U.S. government?sponsored effort that extends the digital period of record back ...

Abstract: A freeze-thaw day is defined as a weather observation day with a maximum temperature of 0°C or above and a minimum temperature of ?2.2°C or below recorded in an instrument shelter 1.5 m above the ground. The 30 winter ...

Abstract: A method to estimate missing daily maximum and minimum temperatures is presented. Temperature estimates are based on departures from daily temperature normals at the three closest stations with similar observation times. ...

Abstract: Historical hourly surface synoptic (airways) meteorological reports from around the United States have been digitized as part of the NOAA Climate Database Modernization Program. An important component is improvement of ...