Summary of Meteorological Observations, Surface (SMOS)

Summary of Meteorological Observations is a historical series of climatological summaries available at the National Climatic Data Center (NCDC). These are unpublished summaries on paper and microfiche. They are from an assortment of stations worldwide, with many from Canada and from past and present U.S. military installations. Years of data represented by the summaries are variable, but generally consist of at least five years of continuous data. Many of the summaries were prepared by the U.S. Navy. A Navy summary would have several, or all, of the following data sections: Part A - Monthly and annual summaries of percentage frequency of occurrence of weather conditions and percentage of days with various atmospheric phenomena. Part B - Summaries of percentage frequency of daily precipitation, extreme 24- hour amounts of precipitation in inches, and these same types of summaries for snowfall and snow depth. Part C - Monthly and annual summaries and 3-hourly summaries, by month, of surface winds. Wind direction to 16 compass points versus speed groups in miles per hour. Part D - Monthly and annual summaries and 3-hourly summaries by month of ceiling (ft.) versus visibility (miles) and sky cover (10ths). Part E - Cumulative percentage frequency of occurrence of daily maximum, minimum, and mean temperatures (Deg. F); extreme values of maximum and minimum temperatures (Deg. F); monthly and annual psychrometric summaries and 3-hourly psychrometric summaries by month of temperature versus wet-bulb temperature depression; monthly and annual cumulative percentage frequency of occurrence of relative humidity (%); and means and standard deviations of dry- bulb, wet-bulb, and dew-point temperatures. Part F - Means and standard deviations of station pressure in inches of mercury and millibars.