Landsat 순기초 생산량 (NPP) CONUS 데이터 세트는 CONUS의 Landsat 표면 반사율을 사용하여 NPP를 추정합니다. NPP는 호흡으로 인한 손실을 고려한 후 생태계에서 식물에 의해 포착된 탄소의 양입니다. NPP는 Landsat 표면 반사율, gridMET, National Land Cover Database와 함께 MOD17 알고리즘 (MOD17 사용자 가이드 참고)을 사용하여 계산됩니다.
대역
픽셀 크기 30미터
대역
이름
단위
최소
최대
확장
픽셀 크기
설명
annualNPP
kg*C/m^2
0
65535
0.0001
미터
연간 순 일차 생산량
QC
%
0
255
미터
갭이 채워진 Landsat 16일 컴포지트의 비율입니다. 누락된 데이터, 높은 클라우드 오염, 잘못된 픽셀로 인해 간격이 발생합니다.
값 255는 갭 채우기 방법의 실패로 인해 데이터가 불완전함을 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
Landsat 순기초 생산량 (NPP) CONUS 데이터 세트는 CONUS의 Landsat 표면 반사율을 사용하여 NPP를 추정합니다. NPP는 호흡으로 인한 손실을 고려한 후 생태계에서 식물이 포착한 탄소의 양입니다. NPP는 Landsat 표면 반사율, …과 함께 MOD17 알고리즘 (MOD17 사용자 가이드 참고)을 사용하여 계산됩니다.
[null,null,[],[[["\u003cp\u003eThe Landsat Net Primary Production (NPP) CONUS dataset estimates annual net primary production (NPP) for the conterminous United States from 1986 to 2020.\u003c/p\u003e\n"],["\u003cp\u003eNPP, the net amount of carbon captured by plants, is calculated using the MOD17 algorithm with Landsat, gridMET, and NLCD data.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is provided at 30-meter resolution and includes an annual NPP band and a quality control band.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is in the public domain and free of known copyright restrictions.\u003c/p\u003e\n"],["\u003cp\u003eThe University of Montana Numerical Terradynamic Simulation Group (NTSG) provides the dataset.\u003c/p\u003e\n"]]],["The Landsat Net Primary Production (NPP) CONUS dataset, provided by the University of Montana NTSG, spans from 1986 to 2020. It offers yearly estimates of NPP, representing carbon captured by plants, calculated using the MOD17 algorithm with Landsat data, gridMET, and the National Land Cover Database. Data is available via an Earth Engine snippet (`ee.ImageCollection(\"UMT/NTSG/v2/LANDSAT/NPP\")`) and includes bands for `annualNPP` (kg\\*C/m\\^2) and `QC`. The dataset is public domain, with a citation requirement.\n"],null,["# Landsat Net Primary Production CONUS\n\nDataset Availability\n: 1986-01-01T00:00:00Z--2020-01-01T00:00:00Z\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: 1 Year\n\nTags\n:\n[conus](/earth-engine/datasets/tags/conus) [gridmet-derived](/earth-engine/datasets/tags/gridmet-derived) [landsat](/earth-engine/datasets/tags/landsat) [mod17](/earth-engine/datasets/tags/mod17) [nlcd-derived](/earth-engine/datasets/tags/nlcd-derived) [npp](/earth-engine/datasets/tags/npp) [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) [yearly](/earth-engine/datasets/tags/yearly) \n\n#### Description\n\nThe Landsat Net Primary Production (NPP) CONUS dataset estimates NPP using\nLandsat Surface Reflectance for CONUS. NPP is the amount of\ncarbon captured by plants in an ecosystem, after accounting for losses due to\nrespiration. NPP is calculated using the MOD17 algorithm (see [MOD17 User\nGuide](https://www.ntsg.umt.edu/files/modis/MOD17UsersGuide2015_v3.pdf)) with\nLandsat Surface Reflectance, gridMET, and the National Land Cover Database.\n\n### Bands\n\n\n**Pixel Size**\n\n30 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Pixel Size | Description |\n|-------------|------------|-----|-------|--------|------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `annualNPP` | kg\\*C/m\\^2 | 0 | 65535 | 0.0001 | meters | Annual net primary production |\n| `QC` | % | 0 | 255 | | meters | Percentage of gap-filled Landsat 16-day composites. Gaps are caused by missing data, high cloud contamination, and/or erroneous pixels. A value of 255 indicates incomplete data due to failure of the gap-filling method. |\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/LANDSAT/NPP')\n .filter(ee.Filter.date('2016-01-01', '2016-12-31'));\nvar npp = dataset.select('annualNPP');\nvar nppVis = {\n min: 0.0,\n max: 20000.0,\n palette: ['bbe029', '0a9501', '074b03'],\n};\nMap.setCenter(-98.26, 39.32, 5);\nMap.addLayer(npp, nppVis, 'NPP');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/UMT/UMT_NTSG_v2_LANDSAT_NPP) \n[Landsat Net Primary Production CONUS](/earth-engine/datasets/catalog/UMT_NTSG_v2_LANDSAT_NPP) \nThe Landsat Net Primary Production (NPP) CONUS dataset estimates NPP using Landsat Surface Reflectance for CONUS. NPP is the amount of carbon captured by plants in an ecosystem, after accounting for losses due to respiration. NPP is calculated using the MOD17 algorithm (see MOD17 User Guide) with Landsat Surface Reflectance, ... \nUMT/NTSG/v2/LANDSAT/NPP, conus,gridmet-derived,landsat,mod17,nlcd-derived,npp,photosynthesis,plant-productivity,production,productivity,yearly \n1986-01-01T00:00:00Z/2020-01-01T00:00:00Z \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_LANDSAT_NPP)"]]
