Project EMIT adalah bagian dari Program Earth Venture-Instrument (EV-I) yang diarahkan oleh Program Director NASA Earth Science Division (ESD).
EMIT terdiri dari spektrometer pencitraan Dyson inframerah VSWIR yang diadaptasi untuk
pemasangan di International Space Station (ISS). EMIT mengukur radiasi antara 380 dan 2.500 nanometer, dengan bandpass sekitar 7 nm.
Data dikumpulkan dalam jalur yang lebarnya sekitar 75 km di
khatulistiwa, dengan jarak pengambilan sampel di permukaan sekitar 60 m. Lihat Ringkasan NASA EMIT penyedia untuk mengetahui detail selengkapnya.
EMIT adalah alat yang sangat berguna untuk memetakan gas rumah kaca, termasuk metana, karbon dioksida, dan uap air. Hal ini konsisten dengan
temuan sebelumnya dari data udara, tetapi sifat global, frekuensi kunjungan ulang
dan cakupan EMIT yang luas memberikan peluang yang belum pernah ada sebelumnya untuk menyelidiki
pengambilan gas rumah kaca.
Produk data Kompleks Plume Metana yang Diperkirakan EMIT Level 2B (EMITL2BCH4PLM) Versi 1 memberikan kompleks plume metana yang diperkirakan dalam satuan meter per juta (ppm m) beserta data ketidakpastian. Produk data EMITL2BCH4PLM hanya akan dibuat jika kompleks gumpalan metana telah diidentifikasi.
Band
Ukuran Piksel 72.000 meter
Band
Nama
Unit
Ukuran Piksel
Deskripsi
methane_plume_complex
ppm m
meter
Estimasi kompleks bulu Metana.
Properti Gambar
Properti Gambar
Nama
Jenis
Deskripsi
global_plume_identifier
STRING
Nomor Identifikasi Plume Global
Concentration_Uncertainty
DOUBLE
Ketidakpastian dalam Konsentrasi
DAAC_Scene_Names
STRING_LIST
Nama Scene DAAC
DAAC_Scene_Numbers
STRING_LIST
Nomor Adegan DAAC
DCID
STRING
ID Pengumpulan Data
Latitude_of_max_concentration
DOUBLE
Lintang dengan konsentrasi maksimum
Longitude_of_max_concentration
DOUBLE
Bujur dengan konsentrasi maksimum
Max_Plume_Concentration
DOUBLE
Konsentrasi Plume Maksimum
Orbit
STRING
Nomor orbit unik
Plume_ID
STRING
Nomor Identifikasi Plume Unik
Scene_FIDs
STRING_LIST
FID adegan
Persyaratan Penggunaan
Persyaratan Penggunaan
Data dan produk NASA EMIT yang diperoleh melalui LP DAAC tidak memiliki batasan pada penggunaan, penjualan, atau redistribusi berikutnya.
Kutipan
Kutipan:
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 Estimated Methane
Plume Complexes 60 m V001 [Kumpulan data]. NASA EOSDIS Land Processes Distributed
Active Archive Center. Diakses pada 06-03-2024 dari
https://doi.org/10.5067/EMIT/EMITL2BCH4PLM.001
Project EMIT adalah bagian dari Program Earth Venture-Instrument (EV-I) yang diarahkan oleh Program Director NASA Earth Science Division (ESD). EMIT terdiri dari spektrometer pencitraan Dyson inframerah VSWIR yang diadaptasi untuk dipasang di International Space Station (ISS). EMIT mengukur radiasi antara 380 dan 2.500 nanometer, …
[null,null,[],[[["\u003cp\u003eThe NASA EMIT L2B Estimated Methane Plume Complexes dataset provides estimated methane plume complexes and uncertainty data in parts per million meter (ppm m).\u003c/p\u003e\n"],["\u003cp\u003eData is collected globally by the EMIT instrument on the International Space Station with a ground sampling distance of 60m and a swath width of ~75km.\u003c/p\u003e\n"],["\u003cp\u003eThis dataset is useful for identifying and quantifying methane plumes, supporting greenhouse gas research and environmental monitoring efforts.\u003c/p\u003e\n"],["\u003cp\u003eEMIT data is freely available for use, sale, and redistribution without restrictions.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset can be accessed and analyzed through Google Earth Engine using the provided code snippet.\u003c/p\u003e\n"]]],[],null,["# Earth Surface Mineral Dust Source Investigation- Methane Plume Complexes\n\nDataset Availability\n: 2022-08-10T00:00:00Z--2024-10-26T17:21:33Z\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 Estimated Methane Plume Complexes (EMITL2BCH4PLM) Version\n1 data product provides estimated methane plume complexes in parts per\nmillion meter (ppm m) along with uncertainty data. The EMITL2BCH4PLM data\nproduct will only be generated 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| `methane_plume_complex` | ppm m | meters | Estimated Methane plume complex. |\n\n### Image Properties\n\n**Image Properties**\n\n| Name | Type | Description |\n|--------------------------------|-------------|--------------------------------------|\n| global_plume_identifier | STRING | Global Plume Identification Number |\n| Concentration_Uncertainty | DOUBLE | Uncertainity in Concentration |\n| DAAC_Scene_Names | STRING_LIST | DAAC Scene Names |\n| DAAC_Scene_Numbers | STRING_LIST | DAAC Scene Numbers |\n| DCID | STRING | Data Collection Identifier |\n| Latitude_of_max_concentration | DOUBLE | Latitute with maximum concentration |\n| Longitude_of_max_concentration | DOUBLE | Longitude with maximum concentration |\n| Max_Plume_Concentration | DOUBLE | Maximum Plume Concentration |\n| Orbit | STRING | Unique orbit number |\n| Plume_ID | STRING | Unique Plume Identification number |\n| Scene_FIDs | STRING_LIST | Scene FIDs |\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 Estimated Methane\n Plume Complexes 60 m V001 \\[Data set\\]. NASA EOSDIS Land Processes Distributed\n Active Archive Center. Accessed 2024-03-06 from\n \u003chttps://doi.org/10.5067/EMIT/EMITL2BCH4PLM.001\u003e\n\n### DOIs\n\n- \u003chttps://doi.org/10.5067/EMIT/EMITL2BCH4PLM.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/CH4PLM');\nvar emitEnhancement = dataset.select('methane_plume_complex');\nvar emitEnhancementVis = {\n min: 0,\n max: 100.0,\n palette: ['d7191c', 'fdae61', 'ffffbf', 'abd9e9', '2c7bb6'],\n};\nMap.setCenter(53.99, 39.11, 8);\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_CH4PLM) \n[Earth Surface Mineral Dust Source Investigation- Methane Plume Complexes](/earth-engine/datasets/catalog/NASA_EMIT_L2B_CH4PLM) \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/CH4PLM, atmosphere,daily,emit,methane,nasa \n2022-08-10T00:00:00Z/2024-10-26T17:21:33Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/EMIT/EMITL2BCH4PLM.001](https://doi.org/https://earth.jpl.nasa.gov/emit/data/data-products/)\n- [https://doi.org/10.5067/EMIT/EMITL2BCH4PLM.001](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NASA_EMIT_L2B_CH4PLM)"]]
