EMIT 프로젝트는 NASA 지구과학부 (ESD)의 프로그램 책임자가 지휘하는 Earth Venture-Instrument (EV-I) 프로그램의 일부입니다.
EMIT는 국제우주정거장 (ISS)에 설치할 수 있도록 개조된 VSWIR 적외선 Dyson 이미징 분광계로 구성됩니다. EMIT는 380~2,500나노미터 사이의 복사량을 측정하며, 대역폭은 약 7nm입니다.
데이터는 적도에서 폭이 약 75km인 스와스에서 수집되며 지상 샘플링 거리는 약 60m입니다. 자세한 내용은 제공업체의 NASA EMIT 개요를 참고하세요.
EMIT는 메탄, 이산화탄소, 수증기를 비롯한 온실가스를 매핑하는 데 특히 유용한 도구였습니다. 이는 항공 데이터의 이전 결과와 일치하지만, EMIT의 전 세계적 특성, 재방문 빈도, 넓은 스와스 덕분에 온실가스 검색을 조사할 수 있는 전례 없는 기회가 제공되었습니다.
EMIT Level 2B Methane Enhancement Data (EMITL2BCH4ENH) 버전 1 데이터 제품은 적응형 일치 필터 접근 방식을 기반으로 한 백만당 미터 (ppm m) 단위의 메탄의 총 수직 열 개선 추정치입니다.
EMITL2BCH4ENH는 메탄 기둥 복합체를 식별하는 데 사용되는 픽셀별 메탄 향상 데이터를 제공합니다. EMITL2BCH4ENH 데이터 제품의 초기 출시에는 메탄 기둥 복합체가 식별된 과립만 포함됩니다.
대역
Pixel Size 72000 meters
대역
이름
단위
픽셀 크기
설명
vertical_column_enhancement
ppm m
미터
메탄의 총 수직 열 개선 추정치
이미지 속성
이미지 속성
이름
유형
설명
orbit_identification_number
문자열
고유 궤도 식별 번호
scene_identification_number
문자열
고유한 장면 식별 번호
이용약관
이용약관
LP DAAC를 통해 획득한 NASA EMIT 데이터 및 제품에는 후속 사용, 판매 또는 재배포에 제한이 없습니다.
인용
인용:
Green, R., Thorpe, A., Brodrick, P., Chadwick, D., Elder, C.,
Villanueva-Weeks, C., Fahlen, J., Coleman, R., Jensen, D., Olsen-Duvall, W.,
Lundeen, S., Lopez, A., Thompson, D. (2023). EMIT L2B 메탄 개선 데이터 60m V001[데이터 세트]. NASA EOSDIS Land Processes Distributed Active
Archive Center. https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001에서 2024년 2월 26일에 액세스함
EMIT 프로젝트는 NASA 지구과학부 (ESD) 프로그램 디렉터가 지휘하는 Earth Venture-Instrument (EV-I) 프로그램의 일부입니다. EMIT는 국제우주정거장 (ISS)에 설치할 수 있도록 개조된 VSWIR 적외선 다이슨 이미징 분광계로 구성됩니다. EMIT는 380~2,500나노미터 사이의 복사 휘도를 측정합니다.
[null,null,[],[[["\u003cp\u003eThe NASA EMIT Level 2B Methane Enhancement dataset provides total vertical column enhancement estimates of methane, useful for identifying methane plume complexes.\u003c/p\u003e\n"],["\u003cp\u003eData is collected by the EMIT imaging spectrometer on the International Space Station, offering global coverage with a 60m ground sampling distance and a 75km swath width.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is particularly valuable for investigating greenhouse gas retrievals, especially for methane, due to its global nature, revisit frequency, and wide swath.\u003c/p\u003e\n"],["\u003cp\u003eEMITL2BCH4ENH data is freely available for use, sale, and redistribution without restrictions.\u003c/p\u003e\n"],["\u003cp\u003eThe initial release of EMITL2BCH4ENH data focuses on granules containing identified methane plume complexes.\u003c/p\u003e\n"]]],["The NASA EMIT project provides daily methane enhancement data (EMITL2BCH4ENH) from a VSWIR imaging spectrometer on the ISS, covering August 2022 to November 2024. This data, measured in ppm m, identifies methane plume complexes using an adaptive matched filter. The dataset, accessible through Earth Engine, includes a `vertical_column_enhancement` band with a 60m pixel size, allowing for global greenhouse gas investigation. Data acquired have no restrictions on use, sale, or redistribution.\n"],null,["# Earth Surface Mineral Dust Source Investigation- Methane Enhancement\n\nDataset Availability\n: 2022-08-10T00:00:00Z--2024-11-30T19:38:00Z\n\nDataset Provider\n:\n\n\n [NASA Jet Propulsion Laboratory](https://earth.jpl.nasa.gov/emit/data/data-products/)\n\nCadence\n: 1 Day\n\nTags\n:\n[atmosphere](/earth-engine/datasets/tags/atmosphere) [daily](/earth-engine/datasets/tags/daily) [emit](/earth-engine/datasets/tags/emit) [methane](/earth-engine/datasets/tags/methane) [nasa](/earth-engine/datasets/tags/nasa) \n\n#### Description\n\nThe EMIT Project is part of the Earth Venture-Instrument (EV-I) Program\ndirected by the Program Director of the NASA Earth Science Division (ESD).\nEMIT is comprised of a VSWIR Infrared Dyson imaging spectrometer adapted for\ninstallation on the International Space Station (ISS). EMIT measures\nradiance between 380 and 2500 nanometers, with an approximate 7 nm bandpass.\nData are collected in a swath that is approximately 75 km wide at the\nequator, with an approximate ground sampling distance of 60 m. See the\nprovider's [NASA EMIT Overview](https://lpdaac.usgs.gov/documents/1695/EMIT_L2B_GHG_User_Guide_V1.pdf)\nfor more details.\n\nEMIT was a particularly useful tool for mapping out greenhouse gases,\nincluding methane, carbon dioxide, and water vapor. This is consistent with\nprevious findings from airborne data, but global nature, revisit frequency\nand wide swath of EMIT provided an unprecedented opportunity to investigate\ngreenhouse gas retrievals.\n\nThe EMIT Level 2B Methane Enhancement Data (EMITL2BCH4ENH) Version 1 data\nproduct is a total vertical column enhancement estimate of methane in parts\nper million meter (ppm m) based on an adaptive matched filter approach.\nEMITL2BCH4ENH provides per-pixel methane enhancement data used to identify\nmethane plume complexes. The initial release of the EMITL2BCH4ENH data\nproduct will only include granules where methane plume complexes have been\nidentified.\n\n### Bands\n\n\n**Pixel Size**\n\n72000 meters\n\n**Bands**\n\n| Name | Units | Pixel Size | Description |\n|-------------------------------|-------|------------|-------------------------------------------------------|\n| `vertical_column_enhancement` | ppm m | meters | Total vertical column enhancement estimate of methane |\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|-----------------------------|--------|------------------------------------|\n| orbit_identification_number | STRING | Unique Orbit Identification Number |\n| scene_identification_number | STRING | Unique scene identification nuber |\n\n### Terms of Use\n\n**Terms of Use**\n\nNASA EMIT data and products acquired through the LP DAAC\nhave no restrictions on subsequent use, sale, or redistribution.\n\n### Citations\n\nCitations:\n\n- Green, R., Thorpe, A., Brodrick, P., Chadwick, D., Elder, C.,\n Villanueva-Weeks, C., Fahlen, J., Coleman, R., Jensen, D., Olsen-Duvall, W.,\n Lundeen, S., Lopez, A., Thompson, D. (2023). EMIT L2B Methane Enhancement\n Data 60 m V001 \\[Data set\\]. NASA EOSDIS Land Processes Distributed Active\n Archive Center. Accessed 2024-02-26 from\n \u003chttps://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001\u003e\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001\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('NASA/EMIT/L2B/CH4ENH');\nvar emitEnhancement = dataset.select('vertical_column_enhancement');\nvar emitEnhancementVis = {\n min: 0,\n max: 100.0,\n palette: ['d7191c', 'fdae61', 'ffffbf', 'abd9e9', '2c7bb6'],\n};\nMap.setCenter(-100.24, 32.04, 5);\nMap.addLayer(\n emitEnhancement, emitEnhancementVis,\n 'Emit Enhancement');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NASA/NASA_EMIT_L2B_CH4ENH) \n[Earth Surface Mineral Dust Source Investigation- Methane Enhancement](/earth-engine/datasets/catalog/NASA_EMIT_L2B_CH4ENH) \nThe EMIT Project is part of the Earth Venture-Instrument (EV-I) Program directed by the Program Director of the NASA Earth Science Division (ESD). EMIT is comprised of a VSWIR Infrared Dyson imaging spectrometer adapted for installation on the International Space Station (ISS). EMIT measures radiance between 380 and 2500 nanometers, ... \nNASA/EMIT/L2B/CH4ENH, atmosphere,daily,emit,methane,nasa \n2022-08-10T00:00:00Z/2024-11-30T19:38:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001](https://doi.org/https://earth.jpl.nasa.gov/emit/data/data-products/)\n- [https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NASA_EMIT_L2B_CH4ENH)"]]
