EMIT Projesi, NASA Earth Science Division (ESD) Program Direktörü tarafından yönetilen Earth Venture-Instrument (EV-I) Programı'nın bir parçasıdır.
EMIT, Uluslararası Uzay İstasyonu'na (ISS) kurulmaya uygun hale getirilmiş bir VSWIR kızılötesi Dyson görüntüleme spektrometresinden oluşur. EMIT, yaklaşık 7 nm bant geçişiyle 380 ile 2.500 nanometre arasındaki ışıma miktarını ölçer.
Veriler, Ekvator'da yaklaşık 75 km genişliğinde bir şerit halinde toplanır ve yaklaşık 60 m'lik bir yer örnekleme mesafesine sahiptir. Daha fazla bilgi için sağlayıcının NASA EMIT'e Genel Bakış başlıklı makalesine bakın.
EMIT, metan, karbondioksit ve su buharı dahil olmak üzere sera gazlarının haritasını çıkarmak için özellikle yararlı bir araçtı. Bu, hava kaynaklı verilerden elde edilen önceki bulgularla tutarlıdır ancak EMIT'in küresel yapısı, yeniden ziyaret sıklığı ve geniş alanı, sera gazı geri kazanımlarını incelemek için benzeri görülmemiş bir fırsat sunmuştur.
EMIT Seviye 2B Metan Geliştirme Verileri (EMITL2BCH4ENH) Sürüm 1 veri ürünü, uyarlanabilir eşleşen filtre yaklaşımına dayalı olarak milyonda bir metre (ppm m) cinsinden metanın toplam dikey sütun geliştirme tahminidir.
EMITL2BCH4ENH, metan bulutu komplekslerini belirlemek için kullanılan piksel başına metan geliştirme verileri sağlar. EMITL2BCH4ENH veri ürününün ilk sürümünde yalnızca metan bulutu komplekslerinin tanımlandığı granüller yer alacak.
Bantlar
Piksel Boyutu 72.000 metre
Bantlar
Ad
Birimler
Piksel Boyutu
Açıklama
vertical_column_enhancement
ppm m
metre
Toplam dikey sütun metan zenginleştirme tahmini
Resim Özellikleri
Resim Özellikleri
Ad
Tür
Açıklama
orbit_identification_number
Dize
Benzersiz Orbit Kimlik Numarası
scene_identification_number
Dize
Benzersiz sahne tanımlama numarası
Kullanım Şartları
Kullanım Şartları
LP DAAC aracılığıyla edinilen NASA EMIT verileri ve ürünleri, sonraki kullanım, satış veya yeniden dağıtım açısından herhangi bir kısıtlamaya tabi değildir.
Alıntılar
Alıntılar:
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 Methane Enhancement
Data 60 m V001 [Veri kümesi]. NASA EOSDIS Land Processes Distributed Active
Archive Center. 26.02.2024 tarihinde https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001 adresinden erişildi.
EMIT Projesi, NASA Dünya Bilimi Bölümü (ESD) Program Direktörü tarafından yönetilen Earth Venture-Instrument (EV-I) Programı'nın bir parçasıdır. EMIT, Uluslararası Uzay İstasyonu'na (ISS) kurulmaya uygun hale getirilmiş bir VSWIR Kızılötesi Dyson görüntüleme spektrometresinden oluşur. EMIT, 380 ile 2.500 nanometre arasındaki ışıma miktarını ölçer. …
[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)"]]
