Le Breathing Earth System Simulator (BESS) est un modèle simplifié basé sur des processus qui couple les transferts radiatifs de l'atmosphère et de la canopée, la photosynthèse de la canopée, la transpiration et le bilan énergétique. Il associe un modèle de transfert radiatif atmosphérique et un réseau de neurones artificiels à des forçages issus des produits atmosphériques MODIS pour générer des produits quotidiens de 5 km.
Publications :
Ryu Youngryel, Chongya Jiang, Hideki Kobayashi, Matteo Detto,
MODIS-derived global land products of shortwave radiation and diffuse and
total photosynthetically active radiation at 5km resolution from 2000.
Remote Sensing of Environment, Volume 204,
2018.
doi:10.1016/j.rse.2017.09.021
Bracelets
Taille des pixels 5 500 mètres
Bandes de fréquences
Nom
Unités
Taille des pixels
Description
PAR_Daily
W/m^2
mètres
Flux radiatif photosynthétique descendant en surface dans l'air
PARdiff_Daily
W/m^2
mètres
Flux radiatif photosynthétique descendant diffus en surface dans l'air
RSDN_Daily
W/m^2
mètres
Flux d'ondes courtes descendantes à la surface dans l'air
Le Breathing Earth System Simulator (BESS) est un modèle simplifié basé sur des processus qui associe les transferts radiatifs de l'atmosphère et de la canopée, la photosynthèse de la canopée, la transpiration et le bilan énergétique. Il associe un modèle de transfert radiatif atmosphérique et un réseau de neurones artificiels à des forçages issus des produits atmosphériques MODIS pour générer des produits quotidiens de 5 km. Publications : Ryu Youngryel, Chongya Jiang, …
[null,null,[],[[["\u003cp\u003eThe BESS Radiation dataset provides daily estimates of shortwave radiation and photosynthetically active radiation (PAR) at a 5km resolution.\u003c/p\u003e\n"],["\u003cp\u003eIt covers the period from 2001 to 2021 and is derived from MODIS atmospheric products using a simplified process-based model.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is available through Google Earth Engine and is provided by Seoul National University.\u003c/p\u003e\n"],["\u003cp\u003eIt's licensed under CC-BY-4.0 and is useful for studies on evapotranspiration, GPP, and radiation.\u003c/p\u003e\n"]]],[],null,["# Breathing Earth System Simulator (BESS) Radiation v1\n\nDataset Availability\n: 2001-01-01T00:00:00Z--2021-12-31T00:00:00Z\n\nDataset Provider\n:\n\n\n [Seoul National University (SNU)](https://www.environment.snu.ac.kr/bess-rad)\n\nCadence\n: 1 Day\n\nTags\n:\n[climate](/earth-engine/datasets/tags/climate) [evapotranspiration](/earth-engine/datasets/tags/evapotranspiration) [gpp](/earth-engine/datasets/tags/gpp) [modis-derived](/earth-engine/datasets/tags/modis-derived) [par](/earth-engine/datasets/tags/par) [radiation](/earth-engine/datasets/tags/radiation) [shortwave](/earth-engine/datasets/tags/shortwave) \n\n#### Description\n\nBreathing Earth System Simulator (BESS) is a simplified process-based model\nthat couples atmosphere and canopy radiative transfers, canopy\nphotosynthesis, transpiration, and energy balance. It couples an atmospheric\nradiative transfer model and artificial neural network with forcings from\nMODIS atmospheric products to generate 5-km daily products.\n\nPublications:\n\n- Ryu Youngryel, Chongya Jiang, Hideki Kobayashi, Matteo Detto, MODIS-derived global land products of shortwave radiation and diffuse and total photosynthetically active radiation at 5km resolution from 2000. Remote Sensing of Environment, Volume 204, 2018. [doi:10.1016/j.rse.2017.09.021](https://doi.org/10.1016/j.rse.2017.09.021)\n\n### Bands\n\n\n**Pixel Size**\n\n5500 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|-----------------|--------|------------|------------------------------------------------------------------|\n| `PAR_Daily` | W/m\\^2 | meters | Surface downwelling photosynthetic radiative flux in air |\n| `PARdiff_Daily` | W/m\\^2 | meters | Surface diffuse downwelling photosynthetic radiative flux in air |\n| `RSDN_Daily` | W/m\\^2 | meters | Surface downwelling shortwave flux in air |\n\n### Terms of Use\n\n**Terms of Use**\n\n[CC-BY-4.0](https://spdx.org/licenses/CC-BY-4.0.html)\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.ImageCollection('SNU/ESL/BESS/Rad/v1');\n\nvar visParams = {\n bands: ['PAR_Daily'],\n min: 0,\n max: 70,\n palette: ['black', 'purple', 'blue', 'yellow', 'orange', 'red']\n};\n\nMap.setCenter(2.1, 24.9, 3);\n\nMap.addLayer(\n dataset, visParams,\n 'Surface downwelling photosynthetic radiative flux (W/m^2)');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/SNU/SNU_ESL_BESS_Rad_v1) \n[Breathing Earth System Simulator (BESS) Radiation v1](/earth-engine/datasets/catalog/SNU_ESL_BESS_Rad_v1) \nBreathing Earth System Simulator (BESS) is a simplified process-based model that couples atmosphere and canopy radiative transfers, canopy photosynthesis, transpiration, and energy balance. It couples an atmospheric radiative transfer model and artificial neural network with forcings from MODIS atmospheric products to generate 5-km daily products. Publications: Ryu Youngryel, Chongya Jiang, ... \nSNU/ESL/BESS/Rad/v1, climate,evapotranspiration,gpp,modis-derived,par,radiation,shortwave \n2001-01-01T00:00:00Z/2021-12-31T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.environment.snu.ac.kr/bess-rad)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/SNU_ESL_BESS_Rad_v1)"]]
