gov.noaa.nodc:0307249 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-05-05T13:20:58Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Tropical Storm Wind Speed, Current Intensity Number, and other tropical storm related variables from the Advanced Dvorak Technique Hurricane Satellite (ADT-HURSAT) globally from May 30 1978 to December 31 2024 (NCEI Accession 0307249) 2025-08-26 publication 2025-08-20 creation International DOI Foundation (IDF) 10.25921/n6va-0b18 NOAA National Centers for Environmental Information gov.noaa.nodc:0307249 NCEI Archive Management System 0307249 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Jennifer Gahtan NOAA National Centers for Environmental Information (NCEI) jennifer.gahtan@noaa.gov resourceProvider NOAA National Centers for Environmental Information (NCEI) resourceProvider Jennifer Gahtan NOAA National Centers for Environmental Information (NCEI) jennifer.gahtan@noaa.gov pointOfContact Kenneth Knapp NOAA National Centers for Environmental Information (NCEI) principalInvestigator Timothy Olander University of Wisconsin - Madison principalInvestigator Christopher Velden University of Wisconsin - Madison collaborator Carl Schreck North Carolina Institute for Climate Studies (NCICS) https://ncics.org/ HTTPS North Carolina Institute for Climate Studies (NCICS) website Institution web page information collaborator Knapp, Kenneth R. NOAA National Centers for Environmental Information (NCEI) author Olander, Timothy L. University of Wisconsin - Madison author Velden, Christopher S. University of Wisconsin-Madison/Cooperative Institute for Meteorological Satellite Studies author Gahtan, Jennifer NOAA National Centers for Environmental Information (NCEI) author Schreck, Carl J. North Carolina Institute for Climate Studies https://ncics.org/ HTTPS North Carolina Institute for Climate Studies (NCICS) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) contributor University of Wisconsin - Madison contributor tableDigital The ADT-HURSAT dataset is a climatology of tropical cyclone intensity estimates. This dataset applies the Advanced Dvorak Technique (ADT) to Hurricane Satellite (HURSAT) data, producing a record of climate quality storm intensity estimates from 1979 through 2024. The HURSAT dataset used in ADT-HURSAT is derived from the International Satellite Cloud Climatology Project (ISCCP) B1 data, with storms initially identified and given storm ids by the International Best Track Archive for Climate Stewardship (IBTrACS), and is homogeneous over the period of record. The ADT is a computer based algorithm for determining tropical cyclone intensity from satellite imagery, developed at University of Wisconsin-Madison/Cooperative Institute for Meteorological Satellite Studies (UW/CIMSS). The algorithm uses objective techniques to determine the initial storm center and derives the intensity from a regression-based scheme based on the Dvorak technique, throughout the tropical cyclone (TC) lifecycle. The HURSAT history files were created using HURSAT Version 07b netCDF files and IBTrACS v04r01. The ADT-Version 9.0 was employed to derive the intensity estimates in this data set. Historical database of tropical cyclone intensity and other variables, consistent over the period of record, to be used to reduce biases in the calculation of TC best tracks over time. Funding Agency: NOAA National Centers for Environmental Information (NCEI) completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0307249 Preview graphic PNG 0307249 NCEI ACCESSION NUMBER 2025-08-19 publication WIND SPEED theme NODC DATA TYPES THESAURUS satellite sensor - visible to infrared instrument NODC INSTRUMENT TYPES THESAURUS Dvorak technique meteorological satellite data theme NODC OBSERVATION TYPES THESAURUS Earth Observation Satellites platform NODC PLATFORM NAMES THESAURUS NOAA National Centers for Environmental Information University of Wisconsin - Madison dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA National Centers for Environmental Information dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Hurricane Satellite Data (HURSAT) International Best Track Archive for Climate Stewardship (IBTrACS) project NODC PROJECT NAMES THESAURUS World-Wide Distribution place NODC SEA AREA NAMES THESAURUS meteorology satelliteObservation theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 HURSAT IBTrACS project Provider Project Names EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 AdjT (Adjusted Raw T number) CDOSize (Central Dense Overcast Diameter) CI (Current Intensity Number) CWT (Coldest-Warmest Temperature) CloudCWdist (CWT ring distance) CloudFFT CloudScene (Cloud scene value) CloudSym (Cloud symmetry) CloudT (Cloud Temperature) Date EyeFFT EyeScene EyeSize (Eye diameter) EyeStdv (Eye region standard deviation) EyeT (Eye Temperature) FinalT (Final T Number) FullDay Land (Land/Ocean Flag) Lat (Storm center latitude position) LatBias (Latitude bias flag) Lon (storm center longitude postion) MSLP (Dvorak MSLP Estimate from CI Number ) MSLPAdj (MSLP adjustment) Position (Storm center determination method) RMW (Radius of maximum wind) RapWeak (Rapid weakening flag) RawT (Raw T Number) RingCBnum (Curved Band Best Dvorak number) RingCBval (Curved Band Best Dvorak curvature) Rule8 (Dvorak Rule 8) Rule9 (Dvorak Rule 9) SatID (McIDAS Sensor number) SatIDChar (Satellite Name) Scene (Scene Type) ShearDist (Shear distance) Time VZA (Viewing Angle) WindSpeed (Dvorak Wind Speed Estimate from CI Number) theme Provider Keywords ADT-HURSAT HURSAT McIDAS calendar instrument Provider Instruments SATELLITES > SATELLITES platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 ADT-HURSAT platform Provider Platform Names GEOGRAPHIC REGION > GLOBAL OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 LF66EE Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Knapp, Kenneth R.; Olander, Timothy L.; Velden, Christopher S.; Gahtan, Jennifer; Schreck, Carl J. (2025). Tropical Storm Wind Speed, Current Intensity Number, and other tropical storm related variables from the Advanced Dvorak Technique Hurricane Satellite (ADT-HURSAT) globally from May 30 1978 to December 31 2024 (NCEI Accession 0307249). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/n6va-0b18. Accessed [date]. 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. 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) Kossin, J. P., Knapp, K. R., Olander, T. L., & Velden, C. S. (2020). Global increase in major tropical cyclone exceedance probability over the past four decades. Proceedings of the National Academy of Sciences, 117(22), 11975–11980. https://doi.org/10.1073/pnas.1920849117 2020-05-18 publication International DOI Foundation (IDF) https://doi.org/10.1073/pnas.1920849117 https://doi.org/10.1073/pnas.1920849117 HTTPS https://doi.org/10.1073/pnas.1920849117 related journal article information Kossin, James P. Center for Weather and Climate, National Centers for Environmental Information, National Oceanic and Atmospheric Administration, Madison, WI 53706; author Knapp, Kenneth R. Center for Weather and Climate, National Centers for Environmental Information, National Oceanic and Atmospheric Administration, Asheville, NC 28801; author Olander, Timothy L. Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin-Madison, Madison, WI 53706 author Velden, Christopher S. Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin-Madison, Madison, WI 53706 author Proceedings of the National Academy of Sciences publisher documentDigital Proc. Natl. Acad. Sci. U.S.A. 117(22) ISSN 0027-8424, ISSN 1091-6490, pp. 11975-11980 crossReference sciencePaper Kossin, J. P., Olander, T. L., & Knapp, K. R. (2013). Trend Analysis with a New Global Record of Tropical Cyclone Intensity. Journal of Climate, 26(24), 9960–9976. https://doi.org/10.1175/jcli-d-13-00262.1 2013-12-02 publication International DOI Foundation (IDF) https://doi.org/10.1175/jcli-d-13-00262.1 https://doi.org/10.1175/jcli-d-13-00262.1 HTTPS https://doi.org/10.1175/jcli-d-13-00262.1 related journal article information Kossin, James P. NOAA/National Climatic Data Center, Asheville, North Carolina, and Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin–Madison, Madison, Wisconsin author Olander, Timothy L. Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin–Madison, Madison, Wisconsin author Knapp, Kenneth R. NOAA/National Climatic Data Center, Asheville, North Carolina author American Meteorological Society publisher documentDigital Journal of Climate 26(24) ISSN 0894-8755, ISSN 1520-0442, pp. 9960-9976 crossReference sciencePaper Olander, T. L., & Velden, C. S. (2019). The Advanced Dvorak Technique (ADT) for Estimating Tropical Cyclone Intensity: Update and New Capabilities. Weather and Forecasting, 34(4), 905–922. https://doi.org/10.1175/waf-d-19-0007.1 2019-07-08 publication International DOI Foundation (IDF) https://doi.org/10.1175/waf-d-19-0007.1 https://doi.org/10.1175/waf-d-19-0007.1 HTTPS https://doi.org/10.1175/waf-d-19-0007.1 related journal article information Olander, Timothy L. Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin–Madison, Madison, Wisconsin author Velden, Christopher S. Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin–Madison, Madison, Wisconsin author American Meteorological Society publisher documentDigital Weather and Forecasting 34(4) ISSN 0882-8156, ISSN 1520-0434, pp. 905-922 crossReference sciencePaper Knapp, K.R., Kossin, J. P. (2007). New global tropical cyclone data set from ISCCP B1 geostationary satellite observations. Journal of Applied Remote Sensing, 1(1), 013505. https://doi.org/10.1117/1.2712816 2007-02-01 publication International DOI Foundation (IDF) https://doi.org/10.1117/1.2712816 https://doi.org/10.1117/1.2712816 HTTPS https://doi.org/10.1117/1.2712816 related journal article information Kossin, James P. author Knapp, Kenneth R. author SPIE-Intl Soc Optical Eng publisher documentDigital J. Appl. Remote Sens 1(1) ISSN 1931-3195, p. 013505 crossReference sciencePaper Advanced Dvorak Technique-Hurricane Satellite (ADT-HURSAT) 2025 publication https://www.ncei.noaa.gov/products/advanced-dvorak-technique-hurricane-satellite HTTPS Advanced Dvorak Technique-Hurricane Satellite (ADT-HURSAT) ADT-HURSAT Project Webpage information NOAA National Centers for Environmental Information https://www.ncei.noaa.gov HTTPS website Institution web page information author NOAA National Centers for Environmental Information https://www.ncei.noaa.gov HTTPS website Institution web page information publisher documentDigital crossReference project ADT-Advanced Dvorak Technique USERS GUIDE (McIDAS Version 8.2.1) 2015 publication https://www.ncei.noaa.gov/products/advanced-dvorak-technique-hurricane-satellite HTTPS https://tropic.ssec.wisc.edu/misc/adt/guides/ADTV8.2.1_Guide.pdf User Guide information University of Wisconsin-Madison https://tropic.ssec.wisc.edu HTTPS website Institution web page information author University of Wisconsin-Madison https://tropic.ssec.wisc.edu HTTPS website Institution web page information publisher documentDigital crossReference project eng; USA utf8 environment oceans climatologyMeteorologyAtmosphere -180 180 -90 90 1978-05-30 2024-12-31 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact 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. netCDF 4 240.82 https://doi.org/10.25921/n6va-0b18 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/307249 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/307249 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0239/0307249/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0307249 v1.1 was published. 2025-08-26T13:30:02Z NCEI Accession 0307249 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0307249/1.1 HTTPS NCEI Accession 0307249 v1.1 published 2025-08-26T13:30:02Z download dataset Parameter or Variable: Date (measured); Units: DayMonthYear; Observation Category: other; Sampling Instrument: calendar Parameter or Variable: Time (measured); Units: HHMMSS; Observation Category: other; Sampling Instrument: clock Parameter or Variable: FullDay (measured); Units: Day number and time of analysis in floating point notation; Observation Category: other; Sampling Instrument: clock Parameter or Variable: RawT (Raw T Number) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Data Quality Method: actual_range = 1., 9. ; missing_value = 0.f ; Parameter or Variable: AdjT (Adjusted Raw T number) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Data Quality Method: actual_range = 1., 9. ; missing_value = 0.f ; Parameter or Variable: FinalT (Final T Number) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Data Quality Method: actual_range = 1., 9. ; missing_value = 0.f ; Parameter or Variable: CI (Current Intensity Number) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Data Quality Method: actual_range = 1., 9. ; missing_value = 0.f ; Parameter or Variable: WindSpeed (Dvorak Wind Speed Estimate from CI Number) (calculated); Units: knot; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Data Quality Method: actual_range = 25., 200. ; missing_value = -99.5f ; Parameter or Variable: MSLP (Dvorak MSLP Estimate from CI Number ) (calculated); Units: hectopascal; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); West/East of Dateline=West Pacific/Atlantic conversion; Data Quality Method: actual_range = 810., 1012. ; missing_value = -99.5f ; Parameter or Variable: EyeT (Eye Temperature) (calculated); Units: degrees Celsius; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Maximum eye region temperature; Data Quality Method: actual_range = -100., 40. ;missing_value = 99.5f ; Parameter or Variable: CloudT (Cloud Temperature) (calculated); Units: degrees Celsius; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Average temperature in an 80 km wide annulus centered on Cloud Coldest-Warmest distance radius value.; Data Quality Method: actual_range = -100., 40.; missing_value = 99.5f ; Parameter or Variable: CWT (Coldest-Warmest Temperature) (calculated); Units: degrees Celsius; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Coldest-Warmest Temperature. The coldest temperature in the array of warmest temperatures on each 4 km ring is between 24 km and 136 km from the storm center.; Data Quality Method: actual_range = -100., 40. ;missing_value = 99.5f ; Parameter or Variable: Lat (Storm center latitude position) (calculated); Units: degrees north; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Data Quality Method: actual_range = -90., 90. ; Parameter or Variable: Lon (storm center longitude postion) (calculated); Units: degrees east; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Data Quality Method: actual_range = -180., 180. Parameter or Variable: EyeSize (Eye diameter) (calculated); Units: kilometers; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Eye diameter estimate, when eye scene is determined; Data Quality Method: missing_value = -99.5f ; Parameter or Variable: CDOSize (Central Dense Overcast Diameter) (calculated); Units: kilometer; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Central Dense Overcast diameter estimate, when CDO/EMBC scene is determined; Data Quality Method: missing_value = -99.5f ; Parameter or Variable: ShearDist (Shear distance) (calculated); Units: kilometer; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Distance from storm position to edge of cloud shield, when shear scene is determined; Data Quality Method: missing_value = -99.5f ; Parameter or Variable: EyeStdv (Eye region standard deviation) (calculated); Units: degrees Celsius; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Standard deviation of eye region temperature values (0-24km from storm center); Data Quality Method: missing_value = 0.f ; Parameter or Variable: CloudSym (Cloud symmetry) (calculated); Units: degrees Celsius; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Compute temp difference between the average temp of opposing 15deg annulus sectors (80km wide) in cloud region. Symmetry value is average of all difference values.; Data Quality Method: missing_value = 0.f Parameter or Variable: SatID (McIDAS Sensor number) (calculated); Units: number; Observation Category: other; Sampling Instrument: McIDAS; Sampling and Analyzing Method: Satellite ID value using McIDAS sensor number designations Parameter or Variable: SatIDChar (Satellite Name) (calculated); Units: name; Observation Category: other; Sampling Instrument: McIDAS; Sampling and Analyzing Method: Satellite name corresponding to McIDAS sensor number designation Parameter or Variable: EyeScene (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Eye scene designation value (0-Eye, 1-Pinhole Eye, 2-Large Eye, 3-No Eye; 0 over land) Parameter or Variable: Scene (Scene Type) (calculated); Units: string; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Scene Type derived from combination of Eye and Cloud Scene integer values Parameter or Variable: CloudScene (Cloud scene value) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Cloud scene designation value (0-CDO, 1-Embedded Center, 2-Irregular CDO, 3-Curved Band, 4-Shear; 0 over land) Parameter or Variable: Rule9 (Dvorak Rule 9) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Dvorak weakening Rule 9 designation flag values (0-storm steady/intensifying (adjustment off); 1-storm weakening (adjustment on); 0 over land) Parameter or Variable: Rule8 (Dvorak Rule 8) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Dvorak Rule 8 constraint flag values (too many to list; 0 over land) Parameter or Variable: LatBias (Latitude bias flag) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Latitude Bias application flag (0-Off, 1-On; 0 over land) Parameter or Variable: RapWeak (Rapid weakening flag) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Rapid weakening application flag (0-Off, 1-On; 0 over land) Parameter or Variable: Land (Land/Ocean Flag) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Land or ocean designator flag (1-Land, 2-Ocean) Parameter or Variable: EyeFFT (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Eye region Fast Fourier Transform value; 0 over land Parameter or Variable: CloudFFT (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Cloud region Fast Fourier Transform value; 0 over land Parameter or Variable: RingCBnum (Curved Band Best Dvorak number) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); BD-enhancement ID value for Curved Band analysis;2-DkGray, 3-MedGray, 4-LtGray, 5-Black, 6-White, 7-TopMed; 0 over land) Parameter or Variable: RingCBval (Curved Band Best Dvorak curvature) (calculated); Units: number out of 25; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Amount of curvature on 10-deg Log Spiral (out of 25 for 100%) Parameter or Variable: CloudCWdist (CWT ring distance) (calculated); Units: kilometer; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Distance from storm center for Coldest-Warmest Temperature ring Parameter or Variable: Position (Storm center determination method) (calculated); Units: number; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Method used for determination of storm center; 0-Manual, 1-Fcst Interp, 2-BT Interp, 3-ARCHER, 4-Spiral, 5-Ring/Spiral Combo, 6-Linear Extrap, 7-HURSAT Parameter or Variable: MSLPAdj (MSLP adjustment) (calculated); Units: hectopascal; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); MSLP adjustment to Dvorak Pressure/Wind/T# relationship using ADT latitude bias adjustment algorithm Parameter or Variable: RMW (Radius of maximum wind) (calculated); Units: kilometer; Observation Category: other; Sampling Instrument: ADT-HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Data Quality Method: missing_value = -99.5f Parameter or Variable: VZA (Viewing Angle) (calculated); Units: degrees; Observation Category: satellite; Sampling Instrument: HURSAT; Sampling and Analyzing Method: Advanced Dvorak Technique (ADT) algorithm on HURSAT data (sampled from ISCCP B1); Viewing angle between storm center and sub-satellite position. Not available for ADT V8.1.3.; Data Quality Method: missing_value = -99.5f asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian satellite sensor - visible to infrared satellite sensor - visible to infrared A space-borne sensor observing in the visible through infrared portions of the electromagnetic spectrum Earth Observation Satellites Satellites that are specifically designed to observe Earth from orbit, similar to spy satellites but intended for non-military uses such as environmental monitoring, meteorology, map making etc. The most common type are Earth imaging satellites, that take satellite images, analogous to aerial photographs; some EO satellites may perform remote sensing without forming pictures, such as in GNSS radio occultation. Ref: Tatem, Andrew J.; Goetz, Scott J.; Hay, Simon I. (2008). "Fifty Years of Earth-observation Satellites". American Scientist. 96 (5): 390–398. doi:10.1511/2008.74.390. PMC 2690060. PMID 19498953.