MOD17A3HGF V6.1 제품은 500m 픽셀 해상도에서 연간 총 및 순 일차 생산성 (GPP 및 NPP)에 관한 정보를 제공합니다. 연간 NPP는 지정된 연도의 모든 8일 순 광합성(PSN) 제품(MOD17A2H)의 합계에서 파생됩니다. PSN 값은 총 일차 생산성 (GPP)과 유지 관리 호흡 (MR)(GPP-MR)의 차이입니다.
대역
픽셀 크기 500미터
대역
이름
단위
최소
최대
확장
픽셀 크기
설명
Gpp
kg*C/m^2
0
65500
0.0001
미터
총 일차 생산성
Npp
kg*C/m^2
-30000
32700
0.0001
미터
순 일차 생산성
Npp_QC
%
0
100
미터
품질 관리 비율
이용약관
이용약관
LP DAAC를 통해 획득한 MODIS 데이터 및 제품은 후속 사용, 판매 또는 재배포에 제한이 없습니다.
MOD17A3HGF V6.1 제품은 500m 픽셀 해상도의 연간 총 및 순 일차 생산성 (GPP 및 NPP)에 관한 정보를 제공합니다. 연간 NPP는 지정된 연도의 모든 8일 순 광합성(PSN) 제품 (MOD17A2H)의 합계에서 파생됩니다. PSN 값은 총 일차 생산성 (GPP)과 …의 차이입니다.
[null,null,[],[[["\u003cp\u003eThe MOD17A3HGF V6.1 product provides annual Gross and Net Primary Productivity (GPP and NPP) data at 500m resolution.\u003c/p\u003e\n"],["\u003cp\u003eNPP is calculated from the sum of 8-day Net Photosynthesis (PSN) values, which are derived from GPP and Maintenance Respiration (MR).\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the period from 2001 to 2023 and is available globally.\u003c/p\u003e\n"],["\u003cp\u003eData is freely accessible for use, sale, and redistribution with proper citation to the LP DAAC.\u003c/p\u003e\n"],["\u003cp\u003eEarth Engine provides tools for analyzing and visualizing this dataset.\u003c/p\u003e\n"]]],["The MOD17A3HGF V6.1 dataset, provided by NASA LP DAAC, offers annual Gross and Net Primary Productivity (GPP and NPP) data from 2001 to 2024, at a 500m resolution. NPP is calculated from 8-day Net Photosynthesis (PSN) products (GPP-MR). The data includes `Gpp`, `Npp`, and `Npp_QC` bands. It is accessible through Google Earth Engine using the code snippet `ee.ImageCollection(\"MODIS/061/MOD17A3HGF\")`. Data is free for use, sale, or redistribution.\n"],null,["# MOD17A3HGF.061: Terra Net Primary Production Gap-Filled Yearly Global 500m\n\nDataset Availability\n: 2001-01-01T00:00:00Z--2024-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MOD17A3HGF.061)\n\nCadence\n: 1 Year\n\nTags\n:\n[global](/earth-engine/datasets/tags/global) [gpp](/earth-engine/datasets/tags/gpp) [nasa](/earth-engine/datasets/tags/nasa) [npp](/earth-engine/datasets/tags/npp) [photosynthesis](/earth-engine/datasets/tags/photosynthesis) [plant-productivity](/earth-engine/datasets/tags/plant-productivity) [productivity](/earth-engine/datasets/tags/productivity) [psn](/earth-engine/datasets/tags/psn) [terra](/earth-engine/datasets/tags/terra) [usgs](/earth-engine/datasets/tags/usgs) [yearly](/earth-engine/datasets/tags/yearly) \n\n#### Description\n\nThe MOD17A3HGF V6.1 product provides information about annual Gross and Net\nPrimary Productivity (GPP and NPP) at 500m pixel resolution. Annual NPP is\nderived from the sum of all 8-day Net Photosynthesis(PSN) products\n(MOD17A2H) from the given year. The PSN value is the difference of the\nGross Primary Productivity (GPP) and the Maintenance Respiration (MR)\n(GPP-MR).\n\n### Bands\n\n\n**Pixel Size**\n\n500 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Pixel Size | Description |\n|----------|------------|--------|-------|--------|------------|----------------------------|\n| `Gpp` | kg\\*C/m\\^2 | 0 | 65500 | 0.0001 | meters | Gross primary productivity |\n| `Npp` | kg\\*C/m\\^2 | -30000 | 32700 | 0.0001 | meters | Net primary productivity |\n| `Npp_QC` | % | 0 | 100 | | meters | Quality control percentage |\n\n### Terms of Use\n\n**Terms of Use**\n\nMODIS data and products acquired through the LP DAAC\nhave no restrictions on subsequent use, sale, or redistribution.\n\n### Citations\n\nCitations:\n\n- Please visit [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data)\n for information on citing LP DAAC datasets.\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/MODIS/MOD17A3HGF.061\u003e\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('MODIS/061/MOD17A3HGF');\n\nvar visualization = {\n bands: ['Npp'],\n min: 0,\n max: 19000,\n palette: ['bbe029', '0a9501', '074b03']\n};\n\nMap.setCenter(6.746, 46.529, 3);\n\nMap.addLayer(dataset, visualization, 'NPP');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_061_MOD17A3HGF) \n[MOD17A3HGF.061: Terra Net Primary Production Gap-Filled Yearly Global 500m](/earth-engine/datasets/catalog/MODIS_061_MOD17A3HGF) \nThe MOD17A3HGF V6.1 product provides information about annual Gross and Net Primary Productivity (GPP and NPP) at 500m pixel resolution. Annual NPP is derived from the sum of all 8-day Net Photosynthesis(PSN) products (MOD17A2H) from the given year. The PSN value is the difference of the Gross Primary Productivity (GPP) ... \nMODIS/061/MOD17A3HGF, global,gpp,nasa,npp,photosynthesis,plant-productivity,productivity,psn,terra,usgs,yearly \n2001-01-01T00:00:00Z/2024-01-01T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/MODIS/MOD17A3HGF.061](https://doi.org/https://doi.org/10.5067/MODIS/MOD17A3HGF.061)\n- [https://doi.org/10.5067/MODIS/MOD17A3HGF.061](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MOD17A3HGF)"]]
