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Pilot Chart Summary Data


These one-degree and five-degree quadrangle summaries give the observation count for an eight-point "wind rose", and means and standard deviations for: wind speed, pressure, air temperature, wet-bulb temperature, sea surface temperature, air-sea temperature difference, and wave height. Also included are light and heavy superstructure icing potential and frequency of gales. The general period summarized is 1850 to 1970, but the actual period summarized varies by ocean basin. These long-term monthly averages were used to produce the U.S. Navy Marine Climatic Atlas.

Temporal Range:
1850 to 1970
Air Temperature Dew Point Temperature Humidity Sea Surface Temperature
Surface Pressure Surface Winds Wave Height Wind Profiles
Vertical Levels:
Ground or water surface
Temporal Frequencies:
Monthly Climatology
Data Types:
Data Contributors:
National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Total Volume:
153.36 MB
Data Formats:
ASCII (see dataset documentation)
Metadata Record:
Data License:
Citation counts are compiled through information provided by publicly-accessible APIs according to the guidelines developed through the project. If journals do not provide citation information to these publicly-accessible services, then this citation information will not be included in RDA citation counts. Additionally citations that include dataset DOIs are the only types included in these counts, so legacy citations without DOIs, references found in publication acknowledgements, or references to a related publication that describes a dataset will not be included in these counts.