MODIS/Aqua Net Evapotranspiration Gap-Filled 8-Day L4 Global 500m SIN Grid V006

Description

The MYD16A2GF Version 6 data product was decommissioned on July 31, 2023. Users are encouraged to use the [MYD16A2GF Version 6.1](https://doi.org/10.5067/MODIS/MYD16A2GF.061) data product. The MYD16A2GF Version 6 Evapotranspiration/Latent Heat Flux (ET/LE) product is a year-end gap-filled 8-day composite dataset produced at 500 meter (m) pixel resolution. The improved algorithm is based on the logic of the Penman-Monteith equation, which includes inputs of daily meteorological reanalysis data along with Moderate Resolution Imaging Spectroradiometer (MODIS) remotely sensed data products such as vegetation property dynamics, albedo, and land cover. The MYD16A2GF will be generated at the end of each year when the entire yearly 8-day [MYD15A2H](https://doi.org/10.5067/MODIS/MYD15A2H.006) is available. Hence, the gap-filled MYD16A2GF is the improved MYD16, which has cleaned the poor-quality inputs from 8-day Leaf Area Index and Fraction of Photosynthetically Active Radiation (LAI/FPAR) based on the Quality Control (QC) label for every pixel. If any LAI/FPAR pixel did not meet the quality screening criteria, its value is determined through linear interpolation. However, users cannot get MYD16A2GF in near-real time because it will be generated only at the end of a given year. Provided in the MYD16A2GF product are layers for composited ET, LE, Potential ET (PET), and Potential LE (PLE) along with a quality control layer. Two low resolution browse images, ET and LE, are also available for each MYD16A2GF granule. The pixel values for the two Evapotranspiration layers (ET and PET) are the sum of all eight days within the composite period, and the pixel values for the two Latent Heat layers (LE and PLE) are the average of all eight days within the composite period. The last acquisition period of each year is a 5- or 6-day composite period, depending on the year. Known Issues * Operational and uncertainty issues are provided on page 13 in the User Guide. * For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue?sensor=MODIS&sat=Aqua&as=6). Improvements/Changes from Previous Versions * Spatial resolution of Version 6 products has increased to nominal 500 m from nominal 1,000 m in Version 5. * Version 5 data products were previously distributed by the Numerical Terradynamic Simulation Group at the University of Montana. The Version 6 products are a continuation of this project.

Resources

Name Format Description Link
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC2763370681-LPCLOUD
5 https://landweb.modaps.eosdis.nasa.gov%2F
5 https://doi.org%2F10.5067%2FMODIS%2FMYD16A2GF.006
5 https://lpdaac.usgs.gov%2F
5 https://lpdaac.usgs.gov%2Fdocuments%2F93%2FMOD16_ATBD.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov%2Ffilespec%2FMODIS%2F6%2FMYD16A2GF
5 https://e4ftl01.cr.usgs.gov%2FWORKING%2FBRWS%2FBrowse.001%2F2020.01.02%2FBROWSE.MYD16A2GF.A2009001.h25v07.006.2020002122134.1.jpg%3F_ga%3D2.32355134.1452435467.1577973160-2066674673.1574795892
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 https://lpdaac.usgs.gov%2Fdocuments%2F494%2FMOD16_User_Guide_V6.pdf
5 https://landweb.modaps.eosdis.nasa.gov/
21 MYD16A2GF.006 https://doi.org/10.5067/MODIS/MYD16A2GF.006
5 https://www.earthdata.nasa.gov/centers/lp-daac
33 MOD16_User_Guide_V6.pdf https://lpdaac.usgs.gov/documents/494/MOD16_User_Guide_V6.pdf
33 MOD16_ATBD.pdf https://lpdaac.usgs.gov/documents/93/MOD16_ATBD.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MYD16A2GF
5 https://landweb.modaps.eosdis.nasa.gov
5 MYD16A2GF.006 https://doi.org/10.5067/MODIS/MYD16A2GF.006
5 https://www.earthdata.nasa.gov/centers/lp-daac
33 MOD16_User_Guide_V6.pdf https://lpdaac.usgs.gov/documents/494/MOD16_User_Guide_V6.pdf
33 MOD16_ATBD.pdf https://lpdaac.usgs.gov/documents/93/MOD16_ATBD.pdf
5 https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/6/MYD16A2GF
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2763370681-LPCLOUD.iso19115
5 https://ltdr.modaps.eosdis.nasa.gov/cgi-bin/ltdr/ltdrPage.cgi?fileName=docs
5 https://ladsweb.modaps.eosdis.nasa.gov/search/order/1/M1_AVH09C1--466
5 https://ladsweb.modaps.eosdis.nasa.gov/archive/allData/466/M1_%20AVH09C1/
33 LTDR_Ver5_Products_UserGuide_v1.0.pdf https://landweb.modaps.eosdis.nasa.gov/QA_WWW/forPage/user_guide/avhrr/LTDR_Ver5_Products_UserGuide_v1.0.pdf
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2187507677-LAADS.iso19115

Tags

  • earth-science-ecological-dynamics-biosphere-ecosystem-functions-primary-production
  • earth-science-precipitation-atmosphere-precipitation-profiles-latent-heat-flux
  • earth-science-atmospheric-water-vapor-atmosphere-water-vapor-processes-evapotranspiration
  • earth-science-ecological-dynamics-biosphere-ecosystem-functions-photosynthesis

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