MODIS 총 일차 생산량 (GPP) CONUS 데이터 세트는 CONUS의 MODIS 표면 반사율을 사용하여 GPP를 추정합니다. GPP는 생태계에서 식물이 포착한 탄소의 양이며 순기초 생산량 (NPP) 계산의 필수 구성요소입니다. GPP는 MODIS 표면 반사율, gridMET, National Land Cover Database를 사용하여 MOD17 알고리즘 (MOD17 사용자 가이드 참고)으로 계산됩니다.
대역
픽셀 크기 250미터
대역
이름
단위
최소
최대
확장
픽셀 크기
설명
GPP
kg*C/m^2/8일
0
65535
0.0001
미터
8일 총 일차 생산량
QC
0
1
미터
평활화 알고리즘을 통해 원래 NDVI 값이 조정되었는지 여부를 나타냅니다. 0은 값이 조정되지 않았음을 나타냅니다. 1은 값이 조정되었음을 나타냅니다.
이용약관
이용약관
이 저작물은 공개 도메인에 속하며 알려진 저작권 제한이 없습니다. 사용자는 이 데이터 세트의 사용으로 생성된 보고서 및 간행물에 사용된 소스를 적절하게 인용하고 데이터가 획득된 날짜를 기록해야 합니다.
인용
인용:
Robinson, N.P., B.W. Allred, W.K. Smith, M.O. Jones, A. Moreno, T.A.
Erickson, D.E. Naugle, and S.W. Running. 2018년. Landsat 30m 및 MODIS 250m에서 파생된 미국 본토의 육상 1차 생산량입니다. Remote Sensing in Ecology and Conservation.
doi:10.1002/rse2.74
MODIS 총 일차 생산량 (GPP) CONUS 데이터 세트는 CONUS의 MODIS 표면 반사율을 사용하여 GPP를 추정합니다. GPP는 생태계에서 식물이 포착한 탄소의 양이며 순기초 생산량 (NPP) 계산의 필수 구성요소입니다. GPP는 MOD17 알고리즘을 사용하여 계산됩니다 (MOD17 …
[null,null,[],[[["\u003cp\u003eThe MODIS Gross Primary Production (GPP) CONUS dataset estimates the amount of carbon captured by plants using MODIS Surface Reflectance data for the conterminous United States.\u003c/p\u003e\n"],["\u003cp\u003eGPP is calculated using the MOD17 algorithm with inputs from MODIS Surface Reflectance, gridMET, and the National Land Cover Database.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset provides 8-day GPP estimates at 250-meter resolution from 2001 to 2021 and is freely available for use.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes a quality control band indicating whether the original NDVI value was adjusted during processing.\u003c/p\u003e\n"],["\u003cp\u003eUsers are encouraged to cite the provided source when using this dataset in reports or publications.\u003c/p\u003e\n"]]],["The MODIS GPP CONUS dataset, provided by the University of Montana NTSG, spans from 2001-01-01 to 2021-12-19 with an 8-day cadence. It estimates Gross Primary Production (GPP), or carbon captured by plants, using MODIS Surface Reflectance, gridMET, and the National Land Cover Database. Data is available via Google Earth Engine using an associated snippet, allowing for visualization and analysis of GPP at a 250-meter pixel size, it includes GPP and quality control bands.\n"],null,["# MODIS Gross Primary Production CONUS\n\nDataset Availability\n: 2001-01-01T00:00:00Z--2021-12-19T00:00:00Z\n\nDataset Provider\n:\n\n\n [University of Montana Numerical Terradynamic Simulation Group (NTSG)](https://www.ntsg.umt.edu/project/landsat/landsat-productivity.php)\n\nCadence\n: 8 Days\n\nTags\n:\n[8-day](/earth-engine/datasets/tags/8-day) [conus](/earth-engine/datasets/tags/conus) [gpp](/earth-engine/datasets/tags/gpp) [gridmet-derived](/earth-engine/datasets/tags/gridmet-derived) [mod09q1](/earth-engine/datasets/tags/mod09q1) [mod17](/earth-engine/datasets/tags/mod17) [modis](/earth-engine/datasets/tags/modis) [nlcd-derived](/earth-engine/datasets/tags/nlcd-derived) [photosynthesis](/earth-engine/datasets/tags/photosynthesis) [plant-productivity](/earth-engine/datasets/tags/plant-productivity) [production](/earth-engine/datasets/tags/production) [productivity](/earth-engine/datasets/tags/productivity) \n\n#### Description\n\nThe MODIS Gross Primary Production (GPP) CONUS dataset estimates GPP using\nMODIS Surface Reflectance for CONUS. GPP is the amount of\ncarbon captured by plants in an ecosystem and is an essential component in\nthe calculations of Net Primary Production (NPP). GPP is calculated using the\nMOD17 algorithm (see [MOD17 User\nGuide](https://www.ntsg.umt.edu/files/modis/MOD17UsersGuide2015_v3.pdf)) with\nMODIS Surface Reflectance, gridMET, and the National Land Cover Database.\n\n### Bands\n\n\n**Pixel Size**\n\n250 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Pixel Size | Description |\n|-------|------------------|-----|-------|--------|------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `GPP` | kg\\*C/m\\^2/8-day | 0 | 65535 | 0.0001 | meters | 8-day gross primary production |\n| `QC` | | 0 | 1 | | meters | Indicates if the original NDVI value was adjusted through the smoothing algorithm. 0 denotes the value was not adjusted. 1 indicates the value was adjusted. |\n\n### Terms of Use\n\n**Terms of Use**\n\nThis work is in the public domain and is free of known copyright\nrestrictions. Users should properly cite the source used in the creation of\nany reports and publications resulting from the use of this dataset and note\nthe date when the data was acquired.\n\n### Citations\n\nCitations:\n\n- Robinson, N.P., B.W. Allred, W.K. Smith, M.O. Jones, A. Moreno, T.A.\n Erickson, D.E. Naugle, and S.W. Running. 2018. Terrestrial primary\n production for the conterminous United States derived from Landsat 30 m and\n MODIS 250 m. Remote Sensing in Ecology and Conservation.\n [doi:10.1002/rse2.74](https://doi.org/10.1002/rse2.74)\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('UMT/NTSG/v2/MODIS/GPP')\n .filter(ee.Filter.date('2017-05-01', '2017-05-31'));\nvar gpp = dataset.select('GPP');\nvar gppVis = {\n min: 0.0,\n max: 1000.0,\n palette: ['bbe029', '0a9501', '074b03'],\n};\nMap.setCenter(-98.26, 39.32, 5);\nMap.addLayer(gpp, gppVis, 'GPP');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/UMT/UMT_NTSG_v2_MODIS_GPP) \n[MODIS Gross Primary Production CONUS](/earth-engine/datasets/catalog/UMT_NTSG_v2_MODIS_GPP) \nThe MODIS Gross Primary Production (GPP) CONUS dataset estimates GPP using MODIS Surface Reflectance for CONUS. GPP is the amount of carbon captured by plants in an ecosystem and is an essential component in the calculations of Net Primary Production (NPP). GPP is calculated using the MOD17 algorithm (see MOD17 ... \nUMT/NTSG/v2/MODIS/GPP, 8-day,conus,gpp,gridmet-derived,mod09q1,mod17,modis,nlcd-derived,photosynthesis,plant-productivity,production,productivity \n2001-01-01T00:00:00Z/2021-12-19T00:00:00Z \n24.42 -124.84 49.72 -64.82 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.ntsg.umt.edu/project/landsat/landsat-productivity.php)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/UMT_NTSG_v2_MODIS_GPP)"]]
