El proyecto EMIT forma parte del programa Earth Venture-Instrument (EV-I) dirigido por el director del programa de la División de Ciencias de la Tierra (ESD) de la NASA.
EMIT consta de un espectrómetro de imágenes Dyson infrarrojo de VSWIR adaptado para su instalación en la Estación Espacial Internacional (EEI). EMIT mide la radiancia entre 380 y 2,500 nanómetros, con un ancho de banda aproximado de 7 nm.
Los datos se recopilan en una franja de aproximadamente 75 km de ancho en el ecuador, con una distancia de muestreo en tierra aproximada de 60 m. Consulta la descripción general de EMIT de la NASA del proveedor para obtener más detalles.
EMIT fue una herramienta particularmente útil para mapear los gases de efecto invernadero, como el metano, el dióxido de carbono y el vapor de agua. Esto coincide con los hallazgos anteriores de los datos aerotransportados, pero la naturaleza global, la frecuencia de revisita y la amplia franja de EMIT proporcionaron una oportunidad sin precedentes para investigar las recuperaciones de gases de efecto invernadero.
El producto de datos de la versión 1 de los datos de mejora de metano de nivel 2B de EMIT (EMITL2BCH4ENH) es una estimación de la mejora total de la columna vertical del metano en partes por millón metro (ppm m) basada en un enfoque de filtro adaptado.
EMITL2BCH4ENH proporciona datos de mejora del metano por píxel que se utilizan para identificar complejos de penachos de metano. El lanzamiento inicial del producto de datos EMITL2BCH4ENH solo incluirá los gránulos en los que se hayan identificado complejos de penachos de metano.
Bandas
Tamaño de píxel 72,000 metros
Bandas
Nombre
Unidades
Tamaño de los píxeles
Descripción
vertical_column_enhancement
ppm m
metros
Estimación de la mejora total de la columna vertical de metano
Propiedades de imágenes
Propiedades de la imagen
Nombre
Tipo
Descripción
orbit_identification_number
STRING
Número de identificación único de órbita
scene_identification_number
STRING
Número de identificación único de la escena
Condiciones de Uso
Condiciones de Uso
Los datos y productos de EMIT de la NASA adquiridos a través del LP DAAC no tienen restricciones sobre el uso, la venta o la redistribución posteriores.
Citas
Citas:
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 [Conjunto de datos]. Centro de archivo activo distribuido de procesos terrestres del EOSDIS de la NASA. Consultado el 26 de febrero de 2024 en https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001
El proyecto EMIT forma parte del programa Earth Venture-Instrument (EV-I) dirigido por el director del programa de la División de Ciencias de la Tierra (ESD) de la NASA. EMIT consta de un espectrómetro de imágenes Dyson infrarrojo de VSWIR adaptado para su instalación en la Estación Espacial Internacional (EEI). EMIT mide la radiancia entre 380 y 2,500 nanómetros…
[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)"]]
