gov.noaa.ncdc:C01690 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2026-07-07T21:47:52 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Synoptic Summary of the Day (SSOD), Version 2 SSODv2 2026-03-25 publication Version 2 NCEI DSI 2076_02 gov.noaa.ncdc:C01690 NOAA National Centers for Environmental Information publisher Menne, Matthew J. NOAA National Centers for Environmental Information Physical Scientist principalInvestigator Menne, Matthew J. NOAA National Centers for Environmental Information Physical Scientist author Casey, Nancy W. NOAA National Centers for Environmental Information author The Synoptic Surface Summary of the Day Version 2 (SSODv2) is the successor dataset to the Global Summary of the Day (GSOD). GSOD was derived from the Integrated Surface Dataset (ISD) and SSOD is derived from the Global Historical Climatology Network hourly (GHCNh) dataset. SSOD will be updated daily using the United States Air Force and NOAA Surface Weather Observations data streams. The online data files begin with 1929 and over 9000 stations' data are typically available. SSOD/GSOD variables include daily means of: temperature, dew point temperature, sea level pressure, station pressure, visibility, and wind speed; plus daily precipitation, snow depth, weather indicator code, maximum/minimum temperatures, maximum wind gust and maximum sustained wind speed. These data are available to the public for a wide variety of uses including scientific research and analysis. onGoing GHCNh NOAA National Centers for Environmental Information Group Contact ncei.ghcnh@noaa.gov pointOfContact daily https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0291094 Graphic not available. PNG Earth Science > Atmosphere > Atmospheric Temperature Earth Science > Atmosphere > Precipitation Earth Science > Atmosphere > Atmospheric Pressure Earth Science > Climate Indicators > Atmospheric/Ocean Indicators > Humidity Indices Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure Earth Science > Atmosphere > Atmospheric Winds Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Speed/Wind Direction theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian license These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) otherRestrictions Cite as: Menne, Matthew J. and Casey, Nancy W. (2026). Synoptic Summary of the Day (SSOD), Version 2. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/DOI. [access date] otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. Global Surface Summary of the Day - GSOD NOAA National Centers for Environmental Information publisher https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncdc:C00516 HTTPS Web Browser NCEI landing page for the superseded Version 1 Superseded dataset landing page. This version should not be used as the primary research dataset. It may be appropriate to use for reproducing studies that used this earlier version. information crossReference project eng; USA climatologyMeteorologyAtmosphere 1 -180.0 180.0 -90.0 90.0 ground condition 1900 1 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. CSV https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncdc:C01690 HTTPS Landing Page NCEI Dataset Landing Page Landing page for the dataset. information https://www.ncei.noaa.gov/access/search/data-search/synoptic-summary-of-the-day-v2 HTTPS Data Search Application NCEI Dataset Search File search and access. search https://www.ncei.noaa.gov/oa/synoptic-summary-of-the-day/index.html#v2/ HTTPS Download NCEI Direct Download (Dataset Files) Direct download for the dataset. Total Access, Archive, and Documentation download. download https://www.ncei.noaa.gov/oa/synoptic-summary-of-the-day/index.html#v2/access/by-year/ HTTPS Download NCEI Direct Download (Dataset Files) Direct download for the dataset. Access by year. download https://www.ncei.noaa.gov/oa/synoptic-summary-of-the-day/index.html#v2/access/by-station/ HTTPS Download NCEI Direct Download (Dataset Files) Direct download for the dataset. Access by station. download https://www.ncei.noaa.gov/oa/synoptic-summary-of-the-day/index.html#v2/doc/ HTTPS Documentation NCEI Direct Download (Documentation Files) Direct download for the documentation. information dataset The data was produced by NOAA and is archived at the National Centers for Environmental Information. repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 asNeeded Bulk metadata change applied on 2024-04-19. See version control repository history for metadata change details.