기준 증발산량 (RET)은 가상 기준 작물의 증발산량으로 정의되며 물을 충분히 공급한 잔디 표면의 동작을 시뮬레이션합니다. 각 픽셀은 일일 기준 증발산량을 mm 단위로 나타냅니다.
대역
픽셀 크기 18924미터
대역
이름
단위
확장
픽셀 크기
설명
L1_RET_E
mm
0.1
미터
기준 증발산량 (일일) [mm]
이용약관
이용약관
유엔 식량농업기구 (FAO)는 영양, 식품, 농업과 관련된 정보를 수집, 분석, 해석, 전파할 의무가 있습니다. 이와 관련하여 FAO는 FAO의 위임과 관련된 주제에 관한 여러 데이터베이스를 게시하고 과학 및 연구 목적으로 데이터베이스를 사용하도록 장려합니다. 통계 데이터베이스를 위한 오픈 데이터 라이선스에 따라 구상된 개방성 및 공유 원칙과 FAO의 위임 사항에 따라 AQUASTAT - FAO의 물 및 농업에 관한 글로벌 정보 시스템의 일부인 물 생산성 오픈 액세스 포털 (WaPOR)의 데이터는 사용자 커뮤니티에 무료로 제공됩니다.
인용
인용:
FAO 2018. WaPOR 데이터베이스 방법론: 1단계. Remote Sensing for Water
Productivity Technical Report: Methodology Series. Rome, FAO. 72페이지
[null,null,[],[[["\u003cp\u003eThe FAO WaPOR dataset provides daily reference evapotranspiration (RET) data from 2009-01-01 to 2023-03-20.\u003c/p\u003e\n"],["\u003cp\u003eRET represents the evapotranspiration from a hypothetical reference crop, simulating a well-watered grass surface.\u003c/p\u003e\n"],["\u003cp\u003eData is available at a 18924 meter resolution and is measured in millimeters (mm).\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is freely available for research and scientific purposes, courtesy of the Food and Agriculture Organization of the United Nations (FAO).\u003c/p\u003e\n"],["\u003cp\u003eUsers can access and analyze the data using Google Earth Engine.\u003c/p\u003e\n"]]],[],null,["# WAPOR Daily Reference Evapotranspiration 2.0\n\nDataset Availability\n: 2009-01-01T00:00:00Z--2023-03-20T00:00:00Z\n\nDataset Provider\n:\n\n\n [FAO UN](https://wapor.apps.fao.org/catalog/WAPOR_2/1/L1_RET_E)\n\nCadence\n: 1 Day\n\nTags\n:\n[agriculture](/earth-engine/datasets/tags/agriculture) [fao](/earth-engine/datasets/tags/fao) [wapor](/earth-engine/datasets/tags/wapor) [water](/earth-engine/datasets/tags/water) [water-vapor](/earth-engine/datasets/tags/water-vapor) \n\n#### Description\n\nReference evapotranspiration (RET) is defined as the evapotranspiration from a\nhypothetical reference crop and it simulates the behaviour of a well-watered\ngrass surface. Each pixel represents the daily reference evapotranspiration in mm.\n\n### Bands\n\n\n**Pixel Size**\n\n18924 meters\n\n**Bands**\n\n| Name | Units | Scale | Pixel Size | Description |\n|------------|-------|-------|------------|---------------------------------------------|\n| `L1_RET_E` | mm | 0.1 | meters | Reference Evapotranspiration (Daily) \\[mm\\] |\n\n### Terms of Use\n\n**Terms of Use**\n\nThe Food and Agriculture Organization of the United Nations (FAO) is\nmandated to collect, analyze, interpret, and disseminate information related\nto nutrition, food, and agriculture. In this regard, it publishes a number\nof databases on topics related to FAO's mandate, and encourages the use of\nthem for scientific and research purposes. Consistent with the principles\nof openness and sharing envisioned under the [Open Data Licensing For\nStatistical Databases](http://www.fao.org/3/ca7570en/ca7570en.pdf), and\nconsistent with the mandate of FAO, data from the [Water Productivity Open\nAccess Portal (WaPOR)](https://wapor.apps.fao.org/home/WAPOR_2/1), as part\nof [AQUASTAT](http://www.fao.org/aquastat/en/) - FAO's Global Information\nSystem on Water and Agriculture, is available free to the user community.\n\n### Citations\n\nCitations:\n\n- FAO 2018. WaPOR Database Methodology: Level 1. Remote Sensing for Water\n Productivity Technical Report: Methodology Series. Rome, FAO. 72 pages.\n- FAO 2020. WaPOR V2 Database Methodology. Remote Sensing for Water\n Productivity Technical Report: Methodology Series. Rome, FAO.\n \u003chttps://www.fao.org/3/ca9894en/CA9894EN.pdf\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 coll = ee.ImageCollection('FAO/WAPOR/2/L1_RET_E');\nvar image = coll.first();\nMap.setCenter(17.5, 20, 3);\nMap.addLayer(image, {min: 0, max: 100});\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/FAO/FAO_WAPOR_2_L1_RET_E) \n[WAPOR Daily Reference Evapotranspiration 2.0](/earth-engine/datasets/catalog/FAO_WAPOR_2_L1_RET_E) \nReference evapotranspiration (RET) is defined as the evapotranspiration from a hypothetical reference crop and it simulates the behaviour of a well-watered grass surface. Each pixel represents the daily reference evapotranspiration in mm. \nFAO/WAPOR/2/L1_RET_E, agriculture,fao,wapor,water,water-vapor \n2009-01-01T00:00:00Z/2023-03-20T00:00:00Z \n-39.9953437 -30.15 40.0044643 65.13 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://wapor.apps.fao.org/catalog/WAPOR_2/1/L1_RET_E)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/FAO_WAPOR_2_L1_RET_E)"]]
