NOAA Typical Meteorological Year (TMY) (1998-2100)
The Typical Meteorological Year (TMY) is an hourly time series that best represents a location's long-term weather conditions. It is a concatenation of 12 typical meteorological months from statistically analyzed and selected individual years from 1998-2022. NCEI’s TMY product is delivered through a point-and-click interface with a downloadable dataset. This product consists of a historical product and a future projections product. The historical product spans 1998-2022 and identifies the most typical years to represent each calendar month based on their statistical similarity to long-term weather norms. The future projections product uses historical analogs that are adjusted based on climate model projections through 2100 to represent conditions that may be typical in the future. These adjustments may increase or decrease the value of the parameters in the future.
Resources
8 resources available
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NCEI Data Set Landing Page
TEXT/HTML -
NOAA Typical Meteorological Year (TMY)
TEXT/HTML -
TMY Interactive Map
TEXT/HTML -
NOAA Typical Meteorological Year (1998-2100) Technical User’s Guide
PDF -
NOAA Typical Meteorological Year (1998-2100) User’s Guide Appendix
PDF -
NCEI Landing Page for Typical Meteorological Year (Version Superseded)
TEXT/HTML -
Global Change Master Directory (GCMD) Keywords
TEXT/HTML -
NOAA National Centers for Environmental Information (NCEI)
TEXT/HTML
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{ "fn": "NOAA National Centers for Environmental Information", "@type": "vcard:Contact", "hasEmail": "mailto:ncei.orders@noaa.gov" } |
| describedByType | application/octet-steam |
| description | The Typical Meteorological Year (TMY) is an hourly time series that best represents a location's long-term weather conditions. It is a concatenation of 12 typical meteorological months from statistically analyzed and selected individual years from 1998-2022. NCEI’s TMY product is delivered through a point-and-click interface with a downloadable dataset. This product consists of a historical product and a future projections product. The historical product spans 1998-2022 and identifies the most typical years to represent each calendar month based on their statistical similarity to long-term weather norms. The future projections product uses historical analogs that are adjusted based on climate model projections through 2100 to represent conditions that may be typical in the future. These adjustments may increase or decrease the value of the parameters in the future. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "NCEI Data Set Landing Page", "accessURL": "https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc:C01765/html", "mediaType": "text/html", "description": "Landing page for the data set", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "NOAA Typical Meteorological Year (TMY)", "accessURL": "https://www.ncei.noaa.gov/products/typical-meteorological-year", "mediaType": "text/html", "description": "NOAA web service to calculate the Typical Meteorological Year (TMY) for a given user input.", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "TMY Interactive Map", "accessURL": "https://www.ncei.noaa.gov/access/typical-meteorological-year/", "mediaType": "text/html", "description": "Interactive map application to create tailored calculations for different design scenarios.", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "NOAA Typical Meteorological Year (1998-2100) Technical User’s Guide", "format": "PDF", "mediaType": "application/pdf", "description": "Technical User Guide", "downloadURL": "https://www.ncei.noaa.gov/sites/default/files/2026-01/TMY%20Tech%20User%20Guide%20-%201.29.26.pdf", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "NOAA Typical Meteorological Year (1998-2100) User’s Guide Appendix", "format": "PDF", "mediaType": "application/pdf", "description": "Appendix to the Technical User Guide", "downloadURL": "https://www.ncei.noaa.gov/sites/default/files/2025-11/TMY%20Appendix%20to%20User%20Guide%20-%2010.30.25.pdf", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "NCEI Landing Page for Typical Meteorological Year (Version Superseded)", "accessURL": "https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncdc:C00045", "mediaType": "text/html", "description": "Related dataset landing page", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "Global Change Master Directory (GCMD) Keywords", "accessURL": "https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords", "mediaType": "text/html", "description": "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "NOAA National Centers for Environmental Information (NCEI)", "accessURL": "https://www.ncei.noaa.gov", "mediaType": "text/html", "description": "NCEI home page with information, data access and contact information.", "describedByType": "application/octet-stream" } ] |
| identifier | https://data.noaa.gov/waf/NOAA/NESDIS/ncei/aim/iso/xml/C01765.xml |
| issued | 2026-01-01T00:00:00.000+00:00 |
| keyword |
[ "Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature", "Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Dew Point Temperature", "Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Speed", "Earth Science > Atmosphere > Atmospheric Radiation > Solar Irradiance > Shortwave Downward Irradiance", "Earth Science > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation", "Earth Science > Atmosphere > Atmospheric Radiation > Solar Radiation", "Earth Science > Atmosphere > Precipitation > Liquid Precipitation", "Earth Science > Atmosphere > Precipitation > Precipitation Amount", "Earth Science > Atmosphere > Atmospheric water vapor > Water vapor indicators > Humidity > Relative humidity", "Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud amount", "Earth Science > Atmosphere > Precipitation > Solid Precipitation > Snow", "Earth Science > Terrestrial hydrosphere > Snow/Ice > Snow depth", "Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements", "Earth Science > Atmosphere > Atmospheric Winds > Surface Winds > Wind Direction", "Continent > North America > United States Of America", "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > PUERTO RICO", "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > VIRGIN ISLANDS", "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce" ] |
| landingPage | https://www.ncei.noaa.gov |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2026-01-01T00:00:00.000+00:00 |
| publisher |
{ "name": "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce", "@type": "org:Organization" } |
| references |
[ "https://www.ncei.noaa.gov/sites/default/files/2026-01/TMY%20Tech%20User%20Guide%20-%201.29.26.pdf", "https://www.ncei.noaa.gov/sites/default/files/2025-11/TMY%20Appendix%20to%20User%20Guide%20-%2010.30.25.pdf", "https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncdc:C00045" ] |
| rights | otherRestrictions |
| spatial | -64.0,-15.0,134.0,72.0 |
| temporal | 1998-01-01T00:00:00+00:00/2100-01-01T00:00:00+00:00 |
| theme |
[ "geospatial" ] |
| title | NOAA Typical Meteorological Year (TMY) (1998-2100) |
