gov.noaa.nodc:CoastWatch-OC-Frontal eng utf8 series 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 2026-05-08T14:02:40Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 2 row 0.1 column 0.1 point true NOAA CoastWatch Chlorophyll Frontal Product from MODIS/Aqua from 2014-08-28 to 2022-10-31 2020-04-23 publication 2013-07-11 creation NOAA National Centers for Environmental Information gov.noaa.nodc:CoastWatch-OC-Frontal NOAA CLASS gov.noaa.class:OC_FRONTAL 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 NOAA Office of Satellite and Product Operations (OSPO) https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information resourceProvider NOAA Office of Satellite and Product Operations OSPO Ocean Color Team https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information author Banghua Yan NOAA Office of Satellite and Product Operations (OSPO) https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information originator NOAA Office of Satellite and Product Operations (OSPO) https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information contributor tableDigital This collection includes MODIS/Aqua chlorophyll frontal data products. The NOAA Okeanos operational production system produces near real-time chlorophyll frontal products (magnitude and direction), using data from MODIS/Aqua L2 chlorophyll products that are generated in the Okeanos system using the NASA L2gen ocean color algorithm. The chlorophyll frontal products are calculated using the BOA-SNRA algorithm, a combination of the Belkin-O'Reilly Algorithm (BOA) for front detection (Belkin and O'Reilly, 2009), and the Stripe Noise Reduction Algorithm (SNRA) (Belkin et al, 2013). The BOA-SNRA code is included in the CoastWatch ocean color products processing software that was written by the NOAA CoastWatch team. Maps of oceanic chlorophyll fronts can be directly used in marine fisheries, marine conservation, environment protection, and other applications and operations. An analysis of horizontal gradients in satellite ocean color data from the MODIS/Aqua data stream provides information on frontal boundaries important to marine ecosystems. This information can be used by marine scientists to better manage marine resources. For example, the interannual variability in the strength and location of ocean fronts affects a number of key living marine resources, such as Northern Shrimp, Atlantic herring and marine mammals. 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:CoastWatch-OC-Frontal Preview graphic PNG 0110333 NCEI ACCESSION NUMBER 2015-01-01 publication ALGAL BLOOM PRESENCE biological data CHLOROPHYLL OPTICAL PROPERTIES PHYTOPLANKTON PIGMENTS PLANKTON theme NODC DATA TYPES THESAURUS MODIS instrument NODC INSTRUMENT TYPES THESAURUS biological derived products physical phytoplankton abundance satellite data survey - biological theme NODC OBSERVATION TYPES THESAURUS Aqua platform NODC PLATFORM NAMES THESAURUS NOAA Office of Satellite and Product Operations dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA Office of Satellite and Product Operations dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS NOAA CoastWatch (CoastWatch) project NODC PROJECT NAMES THESAURUS World-Wide Distribution place NODC SEA AREA NAMES THESAURUS oceanography satelliteObservation theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 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. 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URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian EARTH SCIENCE > BIOLOGICAL CLASSIFICATION EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON > PHYTOPLANKTON EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS EARTH SCIENCE > OCEANS > OCEAN OPTICS theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 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 MODIS > Moderate-Resolution Imaging Spectroradiometer instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 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 Aqua > Earth Observing System, Aqua platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 24 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 Aqua (ICES code: 33V4, 2002-2016) platform ICES/SeaDataNet Ship Codes GEOGRAPHIC REGION > GLOBAL OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 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 0.1˚ 1.1 km dataResolution Spatial Resolution Level 3 product Processing Level accessLevel: public otherRestrictions Cite as: OSPO Ocean Color Team (2020). NOAA CoastWatch Chlorophyll Frontal Product from MODIS/Aqua from 2014-08-28 to 2022-10-31. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/CoastWatch-OC-Frontal. 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. MODIS / Aqua Chlorophyll Front Products 2014-03-25 publication https://www.ospo.noaa.gov/Products/ocean/color/chl_front_magnitude.html HTTPS MODIS / Aqua Chlorophyll Front Products Including real-time data access information NOAA Office of Satellite and Product Operations (OSPO) https://ospo.noaa.gov/ HTTPS NOAA Office of Satellite and Product Operations (OSPO) website Institution web page information publisher [last accessed 2018-06-04] crossReference collection BOASNRA Algorithm Theoretical Basis Document 2013-04-18 publication Version 5.0 https://www.researchgate.net/publication/260107188_BOASNRA_Algorithm_Theoretical_Basis_Document HTTPS Belkin, Igor et al. (2014). BOASNRA Algorithm Theoretical Basis Document. Version 5.0. April 18, 2013. information Belkin, Igor University of Rhode Island, Graduate School of Oceanography (GSO) ibelkin@gso.uri.edu author National Oceanic and Atmospheric Administration (NOAA) https://www.noaa.gov/ HTTPS National Oceanic and Atmospheric Administration (NOAA) website Institution web page information publisher crossReference sciencePaper MODIS Aqua Technical Specifications 2013-03-14 publication https://modis.gsfc.nasa.gov/about/specifications.php HTTPS MODIS Technical Specifications NASA website information US National Aeronautic and Space Administration author US National Aeronautic and Space Administration (NASA) publisher [last accessed 2018-06-04] crossReference sensor eng; USA utf8 environment oceans biota -180 -60 8 64 2015-08-01 2022-10-31 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. CoastWatch HDF 2013 PNG 0.316 https://www.class.noaa.gov/saa/products/search?sub_id=0&datatype_family=OC_FRONTAL HTTP Web browser Order These data are available through NOAA's Comprehensive Large Array-data Stewardship System (CLASS). Use the CLASS web interface to search for and order data by temporal, spatial and and other product-specific criteria. You may also create a subscription to order data on a regular basis. order https://www.ncei.noaa.gov/archive/accession/CoastWatch-OC-Frontal HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information dataset Horizontal Positional Accuracy 1.1 km at nadir kilometre 1000 1.1 Vertical Positional Accuracy Depth integrated ocean color urn:ogc:def:uom:OGC::m meter The data processing level for these satellite data are NOAA level 3. They are statistical analyses of the Chlorophyll fields, interpolated to equidistant latitude and longitude grids. The Belkin-O'Reilly Algorithm (BOA) is used to derive the dataset. Since this data set is produced for daily MODIS/ Aqua fields, there may be large gaps in the data record, which will be stored as a pixel by pixel basis as data with low quality flags. The gaps may extend for large spatial regions and for many days for any pixel. The data processing level for these satellite data are NOAA level 3. They are statistical analyses of the Chlorophyll fields, interpolated to equidistant latitude and longitude grids. MODIS/Aqua L1B files are received as individual 5-minute granules and processed to MODL2 which is further used to process chlorophyll frontal products using the Belkin-O’Reilly algorithm in the CoastWatch Okeanos automated processing system. 2012-10-15T00:00:00 Banghua Yan NOAA/NESDIS/OSPO/Satellite Products Branch NOAA Ocean Color Operational Product Area Lead 301-683-3230 301-683-3297 Rm 3620, NOAA Center for Weather and Climate Prediction (NCWCP) 5830 University Research Court College Park Maryland 20740 USA Banghua.Yan@noaa.gov processor MODIS/Aqua L1B files are received as individual 5-minute granules and processed to MODL2 which is further used to process chlorophyll frontal products using the Belkin-O’Reilly algorithm in the CoastWatch Okeanos automated processing system. MODIS/Aqua L1B files 2012 publication NOAA/NESDIS/OSPO/Satellite Products Branch resourceProvider This is a product generated from the MODIS Aqua ocean color data. Other ocean color products currently archived at NODC and NOAA CLASS include the SeaWiFS level 1A and level 2 data, MODIS Aqua level 2 data, MERIS level 2 data, MODIS Aqua SWIR level 2 data, and MODIS Terra level 2 data. The data set is most closely related to the MODIS Aqua data sets. ground condition 2012-10 present series NCEI Accession 0110333 v1.1 was published. 2020-04-23T20:39:20Z asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian MODIS MODIS Moderate Resolution Imaging Spectroradiometer MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (EOS AM) and Aqua (EOS PM) satellites. Terra's orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon. Terra MODIS and Aqua MODIS are viewing the entire Earth's surface every 1 to 2 days, acquiring data in 36 spectral bands, or groups of wavelengths (see MODIS Technical Specifications). MODIS Technical Specifications Orbit: 705 km, 10:30 a.m. descending node (Terra) or 1:30 p.m. ascending node (Aqua), sun-synchronous, near-polar, circular Scan Rate: 20.3 rpm, cross track Swath Dimensions: 2330 km (cross track) by 10 km (along track at nadir) Telescope: 17.78 cm diam. off-axis, afocal (collimated), with intermediate field stop Size: 1.0 x 1.6 x 1.0 m Weight: 228.7 kg Power: 162.5 W (single orbit average) Data Rate: 10.6 Mbps (peak daytime); 6.1 Mbps (orbital average) Quantization: 12 bits Spatial Resolution: 250 m (bands 1-2); 500 m (bands 3-7); 1000 m (bands 8-36) Design Life: 6 years (From: http://modis.gsfc.nasa.gov/about/index.html) Aqua Updated information from ICES for the Name : Aqua Country(s) : UNITED STATES(US) (ISO Country Code) Platform Class : 65 Orbiting satellite Commissioned Date : 2002-05-04 Decommissioned Date : 2016 Notes : 2nd flight unit of the EOS programme. Main mission is demonstration of advanced sensors for operational meteorology. Information Sources: - http://www.wmo-sat.info/oscar/satellites/view/79 Confirmed by NOAA on 2018-08-0 Instruments: AMSR-E et al NSSDCA/COSPAR ID: 2002-022A