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Merge pull request #4907 from nasa-gibs/release
Release to Main v4.23.0
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<h2>License</h2> | ||
<p>Copyright © 2013 - 2023 United States Government as represented by the Administrator of the National Aeronautics | ||
<p>Copyright © 2013 - 2024 United States Government as represented by the Administrator of the National Aeronautics | ||
and Space Administration. All Rights Reserved. This software is licensed under the <a | ||
href="https://ti.arc.nasa.gov/opensource/nosa/" target="_blank" rel="noopener noreferrer">NASA Open Source | ||
href="https://opensource.gsfc.nasa.gov/nosa.php" target="_blank" rel="noopener noreferrer">NASA Open Source | ||
Software Agreement, Version 1.3</a>. Source code is available on the <a | ||
href="https://github.com/nasa-gibs/worldview" target="_blank" rel="noopener noreferrer">NASA GIBS | ||
GitHub</a>.</p> | ||
<hr> | ||
<p>@BUILD_TIMESTAMP@<br> Responsible NASA Official: <a href="mailto:[email protected]">Ryan | ||
Boller</a><br> | ||
<a href="https://www.nasa.gov/about/highlights/HP_Privacy.html" target="_blank">Web Privacy Policy</a></p> | ||
<a href="https://www.nasa.gov/privacy/#privacy-policy" target="_blank">Web Privacy Policy</a></p> |
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...nfig/metadata/layers/amsre/LPRM_AMSRE_Surface_Soil_Moisture_C_Band_Day_Daily.md
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The Surface Soil Moisture C-band (Day, Daily) layer displays level 3, daily, gridded surface soil moisture from the daytime (ascending) overpass. The surface soil moisture is derived from passive microwave remote sensing data from the Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E), using the Land Parameter Retrieval Model (LPRM). The LPRM is based on a forward radiative transfer model to retrieve surface soil moisture and vegetation optical depth. | ||
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The spatial resolution is 25 km x 25 km, the imagery resolution is 2 km and temporal availability is daily, covering the period from June 2002 to October 2011. | ||
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References: LPRM_AMSRE_A_SOILM3 [doi:10.5067/X3K5V3NNLYAV](https://doi.org/10.5067/X3K5V3NNLYAV) |
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...ig/metadata/layers/amsre/LPRM_AMSRE_Surface_Soil_Moisture_C_Band_Night_Daily.md
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The Surface Soil Moisture C-band (Night, Daily) layer displays level 3, daily, gridded surface soil moisture from the nighttime (descending) overpass. The surface soil moisture is derived from passive microwave remote sensing data from the Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E), using the Land Parameter Retrieval Model (LPRM). The LPRM is based on a forward radiative transfer model to retrieve surface soil moisture and vegetation optical depth. | ||
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The spatial resolution is 25 km x 25 km, the imagery resolution is 2 km and temporal availability is daily, covering the period from June 2002 to October 2011. | ||
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References: LPRM_AMSRE_D_SOILM3 [doi:10.5067/MXL0MFDHWP07](https://doi.org/10.5067/MXL0MFDHWP07) |
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config/default/common/config/metadata/layers/modis/Chlorophyll_a.md
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### About Chlorophyll *a* | ||
Chlorophyll is a light harvesting pigment found in most photosynthetic organisms. In the ocean, phytoplankton all contain the chlorophyll pigment, which has a greenish color. Derived from the Greek words _phyto_ (plant) and _plankton_ (made to wander or drift), _phytoplankton_ are microscopic organisms that live in watery environments, both salty and fresh. Some phytoplankton are bacteria, some are protists, and most are single-celled plants. The concentration of chlorophyll *a* is used as an index of phytoplankton biomass. Phytoplankton fix carbon through photosynthesis, taking in dissolved carbon dioxide in the sea water and producing oxygen, enabling phytoplankton to grow. Changes in the amount of phytoplankton indicate the change in productivity of the ocean and as marine phytoplankton capture almost an equal amount of carbon as does photosynthesis by land vegetation, it provides an ocean link to global climate change modeling. The MODIS Chlorophyll *a* product is therefore a useful product for assessing the “health” of the ocean. The presence of phytoplankton indicates sufficient nutrient conditions for phytoplankton to flourish, but harmful algal blooms (HABs) can result when high concentrations of phytoplankton produced toxins build up. Known as red tides, blue-green algae or cyanobacteria, harmful algal blooms have severe impacts on human health, aquatic ecosystems and the economy. Chlorophyll features can also be used to trace oceanographic currents, atmospheric jets/streams and upwelling/downwelling/river plumes. Chlorophyll concentration is also useful for studying the Earth’s climate system as it is plays an integral role in the Global Carbon Cycle. More phytoplankton in the ocean may result in a higher capture rate of carbon dioxide into the ocean and help cool the planet. | ||
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References: [OceanColor Web - Level 1&2 Browsers](https://oceancolor.gsfc.nasa.gov/cgi/browse.pl?sen=am); [OceanColor Web - Chlorophyll a](https://oceancolor.gsfc.nasa.gov/atbd/chlor_a/); [NASA Earth Observations - Chlorophyll Concentration](https://neo.gsfc.nasa.gov/view.php?datasetId=MY1DMM_CHLORA) | ||
References: [OceanColor Web - Level 1&2 Browsers](https://oceancolor.gsfc.nasa.gov/cgi/browse.pl?sen=am); [Earthdata Algorithm Publication Tool - Chlorophyll a](https://www.earthdata.nasa.gov/apt/documents/chlor-a/v1.0); [NASA Earth Observations - Chlorophyll Concentration](https://neo.gsfc.nasa.gov/view.php?datasetId=MY1DMM_CHLORA) |
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...mon/config/metadata/layers/modis/aqua/MODIS_Aqua_L3_SST_MidIR_4km_Night_8Day.md
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The MODIS L3 SST 4km layer shows global nighttime sea surface temperature (SST) at a depth of a few micrometers with ranges from -1.8 to 32 degree Celsius. The SST is derived with a Mid-Infrared (Short–Wave) SST Algorithm that uses MODIS bands 22 and 23 at 3.959 and 4.050 μm. This Level 3 product is derived from native 1 km Level 2 SST observations that are mapped to a global 4.63 km grid. The temporal resolution of this MODIS L3 SST is 8-Day. | ||
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References: MODIS_AQUA_L3_SST_MID-IR_8DAY_4KM_NIGHTTIME_V2019.0 [doi:10.5067/MODAM-8D4N9](https://doi.org/10.5067/MODAM-8D4N9); Details of the [algorithm](https://oceancolor.gsfc.nasa.gov/atbd/sst4/) can be found at Ocean Biology Processing Group (OBPG/OB.DAAC) website. | ||
References: MODIS_AQUA_L3_SST_MID-IR_8DAY_4KM_NIGHTTIME_V2019.0 [doi:10.5067/MODAM-8D4N9](https://doi.org/10.5067/MODAM-8D4N9); Details of the [algorithm](https://oceancolor.gsfc.nasa.gov/resources/atbd/sst4/) can be found at Ocean Biology Processing Group (OBPG/OB.DAAC) website. | ||
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P. J. Minnett et al., "Sea-surface temperature measurements from the Moderate-Resolution Imaging Spectroradiometer (MODIS) on Aqua and Terra," IGARSS 2004. 2004 IEEE International Geoscience and Remote Sensing Symposium, Anchorage, AK, 2004, pp. 4576-4579 vol.7. [doi:10.1109/IGARSS.2004.1370173](https://doi.org/10.1109/IGARSS.2004.1370173). |
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config/default/common/config/metadata/layers/multi-mission/hls/Reflectance.md
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### About HLS | ||
The Harmonized Landsat and Sentinel-2 (HLS) project provides consistent surface reflectance data from the Operational Land Imager (OLI) aboard the joint NASA/USGS Landsat 8 and 9 satellites and the Multi-Spectral Instrument (MSI) aboard the European Union’s Copernicus Sentinel-2A and Sentinel-2B satellites. The combined measurements between Landsat 8, Landsat 9, Sentinel-2A, and Sentinel-2B enable global observations of the land every 2-3 days at 30 meter (m) spatial resolution. The HLS project uses a set of algorithms to obtain seamless products from OLI and MSI that include atmospheric correction, cloud and cloud-shadow masking, spatial co-registration and common gridding, illumination and view angle normalization, and spectral bandpass adjustment. | ||
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References: [Harmonized Landsat Sentinel-2 (HLS) Product User Guide](https://lpdaac.usgs.gov/documents/1326/HLS_User_Guide_V2.pdf) | ||
References: [Harmonized Landsat Sentinel-2 (HLS) Product User Guide](https://lpdaac.usgs.gov/documents/1698/HLS_User_Guide_V2.pdf) | ||
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