{"ob_id":32379,"uuid":"6d0b4c8c5191408d943310e08ed6dd06","title":"MCD15A2H - MODIS/Terra+Aqua Leaf Area Index/FPAR 8-Day L4 Global 500m SIN Grid","abstract":"These data are a copy of MODIS data from the NASA Level-1 and Atmosphere Archive & Distribution System (LAADS) Distributed Active Archive Center (DAAC). The copy is potentially only a subset. Below is the description from https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/MCD15A2H\n\n\n\n\n\nThe level-4 MODIS global Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) product is composited every 8 days at 1-kilometer resolution on a Sinusoidal grid. Science Data Sets provided in the MCD15A2H include LAI, FPAR, a quality assurance rating, and standard deviation for each variable.\n\nThe LAI variable defines the number of equivalent layers of leaves relative to a unit of ground area, whereas FPAR measures the proportion of available radiation in the photosynthetically active wavelengths that are absorbed by a canopy. Both variables are used as satellite-derived parameters for calculating surface photosynthesis, evapotranspiration, and net primary production, which in turn are used to calculate terrestrial energy, carbon, water cycle processes, and biogeochemistry of vegetation.\n\nCollection-5 MODIS Combined Terra and Aqua LAI products are Validated Stage 2, accuracy has been assessed over a widely distributed set of locations and time periods via several ground-truth and validation efforts. Collection-5 MODIS/Terra FPAR products are Validated Stage 1, meaning that accuracy has been estimated using a small number of independent measurements obtained from selected locations and time periods and ground-truth/field program efforts. Although there may be later improved versions, these data are ready for use in scientific publications.\n\nShortname: MCD15A2H , Platform: Combined Aqua Terra , Instrument: MODIS , Processing Level: Level-4 , Spatial Resolution: 500 m , Temporal Resolution: 8 day , ArchiveSets: 6, 61 , Collection: MODIS Collection 6    (ArchiveSet 6) , PGE Number: PGE34 , File Naming Convention: MCD15A2H.AYYYYDDD.hHHvVV.CCC.YYYYDDDHHMMSS.hdf  YYYYDDD = Year and Day of Year of acquisition hHH = Horizontal tile number (0-35) vVV = Vertical tile number (0-17) CCC = Collection number YYYYDDDHHMMSS = Production Date and Time  , Citation: Ranga Myneni, Knyazikhin, Yuri, Taejin Park - Boston University and MODAPS SIPS - NASA. (2015). MOD15A2H MODIS/Combined Terra+Aqua Leaf Area Index/FPAR Daily L4 Global 500m SIN Grid. NASA LP DAAC. http://doi.org/10.5067/MODIS/MOD15A2H.006 , Keywords: Climate Change, Biomass, Evapotranspiration, Plant Phenology, Forest Composition/Vegetation Structure, Length of Growing Season, Leaf Characteristics, Canopy Characteristics, Photosynthetically Active Radiation ","keywords":"Climate Change, Biomass, Evapotranspiration, Plant Phenology, Forest Composition/Vegetation Structure, Length of Growing Season, Leaf Characteristics, Canopy Characteristics, Photosynthetically Active Radiation ","publicationState":"published","dataPublishedTime":"2021-04-15T14:03:15.253175","doiPublishedTime":null,"updateFrequency":"asNeeded","status":"ongoing","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/32380/?format=json","dataPath":"/neodc/modis/data/MCD15A2H","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":11493179517,"numberOfFiles":3068,"fileFormat":"HDF"},"timePeriod":"https://catalogue.ceda.ac.uk/api/v2/times/8883/?format=json","geographicExtent":"https://catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=json","nonGeographicFlag":false,"phenomena":["https://catalogue.ceda.ac.uk/api/v2/phenomona/64812/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/64813/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/64814/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/64815/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/64816/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/64817/?format=json"],"dataLineage":"Data were downloaded from https://ladsweb.modaps.eosdis.nasa.gov/archive/allData/ to support UK research groups, especially NCEO.","removedDataTime":null,"removedDataReason":"","language":"English","identifier_set":["https://catalogue.ceda.ac.uk/api/v2/identifiers/10827/?format=json"],"projects":["https://catalogue.ceda.ac.uk/api/v2/projects/10895/?format=json","https://catalogue.ceda.ac.uk/api/v2/projects/10904/?format=json"],"observationcollection_set":["https://catalogue.ceda.ac.uk/api/v2/observationcollections/10892/?format=json","https://catalogue.ceda.ac.uk/api/v2/observationcollections/30129/?format=json"],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/144164/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/144165/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/144166/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/144167/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/144168/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/144170/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/144171/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/144172/?format=json"],"procedureAcquisition":"https://catalogue.ceda.ac.uk/api/v2/acquisitions/10908/?format=json","procedureCompositeProcess":null,"procedureComputation":null,"permissions":[{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/2557/?format=json","useLimitation":null,"accessConstraints":null,"accessCategory":"public","accessRoles":null,"label":"public: None group","licenceURL":"https://modaps.modaps.eosdis.nasa.gov/services/faq/LAADS_Data-Use_Citation_Policies.pdf","licenceClassifications":""}],"discoveryKeywords":[{"ob_id":1138,"name":"NDGO0003"}]}