Surface Weather Observation 1001 Forms is a set of historical manuscript records for the period 1893-1948. The collection includes two very similar form types: Form 1001, in use by the US Weather Bureau, and Form 1, in use by the US Army and Navy. NCDC Climate Data Modernization Program (CDMP) scanned the vast majority of these forms in order to fill in the observation gap prior to the time when commercial aviation began in the U.S. Many forms contiaining observations taken on foreign soil have not yet been scanned. Observations were recorded two to four times daily beginning as early as 1893 at city Weather Bureau Offices. During the 1930s many of these city stations gradually moved to airport locations.
Through 1936 observations were taken twice daily; then in 1937 the general practice was to record four observations per day. The data elements are as follows: station pressure, sea level pressure, dry and wet bulb temperature, dew point, maximum and minimum temperature, wind direction and speed, precipitation, cloud amount and type, ceiling, state of weather and visibility. It should be noted that not all elements are present for all stations in this dataset, and that ceiling and visibility observations did not begin at the city offices until the 1930's. Official surface weather observation standards can be found in the Circular N manuals. The vast majority of records are available online, but some records are still only available in the physical format only.
About this Dataset
| Title | Surface Weather Observations Monthly |
|---|---|
| Description | Surface Weather Observation 1001 Forms is a set of historical manuscript records for the period 1893-1948. The collection includes two very similar form types: Form 1001, in use by the US Weather Bureau, and Form 1, in use by the US Army and Navy. NCDC Climate Data Modernization Program (CDMP) scanned the vast majority of these forms in order to fill in the observation gap prior to the time when commercial aviation began in the U.S. Many forms contiaining observations taken on foreign soil have not yet been scanned. Observations were recorded two to four times daily beginning as early as 1893 at city Weather Bureau Offices. During the 1930s many of these city stations gradually moved to airport locations. Through 1936 observations were taken twice daily; then in 1937 the general practice was to record four observations per day. The data elements are as follows: station pressure, sea level pressure, dry and wet bulb temperature, dew point, maximum and minimum temperature, wind direction and speed, precipitation, cloud amount and type, ceiling, state of weather and visibility. It should be noted that not all elements are present for all stations in this dataset, and that ceiling and visibility observations did not begin at the city offices until the 1930's. Official surface weather observation standards can be found in the Circular N manuals. The vast majority of records are available online, but some records are still only available in the physical format only. |
| Modified | 2025-11-14T14:10:41.642Z |
| Publisher Name | N/A |
| Contact | N/A |
| Keywords | Earth Science > Atmosphere > Atmospheric Pressure > Anticyclones/Cyclones , Earth Science > Atmosphere > Atmospheric Pressure > Pressure Anomalies , Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure , Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements , Earth Science > Atmosphere > Atmospheric Pressure > Surface Pressure , Earth Science > Atmosphere > Precipitation > Solid Precipitation > Hail , Earth Science > Atmosphere > Precipitation > Precipitation Amount , Earth Science > Atmosphere > Precipitation > Precipitation Anomalies , Earth Science > Atmosphere > Precipitation > Precipitation Rate , Earth Science > Atmosphere > Precipitation > Liquid Precipitation > Rain , Earth Science > Atmosphere > Precipitation > Solid Precipitation > Ice Pellets > Sleet , Earth Science > Atmosphere > Precipitation > Solid Precipitation > Snow , Earth Science > Atmosphere > Atmospheric Winds > Surface Winds , Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature , Earth Science > Atmosphere > Atmospheric Temperature > Temperature Anomalies , Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature , Earth Science > Atmosphere > Atmospheric Temperature > Dew Point Temperature , Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Maximum/Minimum Temperature , Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Dew Point Temperature , Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Frequency , Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Ceiling , Earth Science > Atmosphere > Clouds > Cloud Types , Earth Science > Atmosphere > Air Quality > Visibility , Atmospheric - Surface - Air Temperature , Atmospheric - Surface - Precipitation , Atmospheric - Surface - Pressure , Atmospheric - Surface - Wind Speed And Direction , Atmospheric - Upper-air - Cloud Properties , Continent > North America > United States Of America , Vertical Location > Land Surface , Meteorological Stations , Thermometers , Anemometers , Rain Gauges , Barometers , Visual Observations , DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce , DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce , climatologyMeteorologyAtmosphere |
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"Earth Science > Atmosphere > Atmospheric Pressure > Pressure Anomalies",
"Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure",
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