![NASA/EMIT/L2B/CH4ENH](https://developers.google.com/earth-engine/datasets/images/NASA/NASA_EMIT_L2B_CH4ENH_sample.png)

Dataset Availability
:   2022-08-10T00:00:00Z--2024-11-30T19:38:00Z

Dataset Producer
:


    [NASA Jet Propulsion Laboratory](https://earth.jpl.nasa.gov/emit/data/data-products/)

Cadence
:   1 Day

Tags
:
    [atmosphere](https://developers.google.com/earth-engine/datasets/tags/atmosphere) [daily](https://developers.google.com/earth-engine/datasets/tags/daily) [emit](https://developers.google.com/earth-engine/datasets/tags/emit) [methane](https://developers.google.com/earth-engine/datasets/tags/methane) [nasa](https://developers.google.com/earth-engine/datasets/tags/nasa)

#### Description

The 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, with an approximate 7 nm bandpass.
Data are collected in a swath that is approximately 75 km wide at the
equator, with an approximate ground sampling distance of 60 m. See the
provider's [NASA EMIT Overview](https://lpdaac.usgs.gov/documents/1695/EMIT_L2B_GHG_User_Guide_V1.pdf)
for more details.

EMIT was a particularly useful tool for mapping out greenhouse gases,
including methane, carbon dioxide, and water vapor. This is consistent with
previous findings from airborne data, but global nature, revisit frequency
and wide swath of EMIT provided an unprecedented opportunity to investigate
greenhouse gas retrievals.

The EMIT Level 2B Methane Enhancement Data (EMITL2BCH4ENH) Version 1 data
product is a total vertical column enhancement estimate of methane in parts
per million meter (ppm m) based on an adaptive matched filter approach.
EMITL2BCH4ENH provides per-pixel methane enhancement data used to identify
methane plume complexes. The initial release of the EMITL2BCH4ENH data
product will only include granules where methane plume complexes have been
identified.

### Bands

**Bands**

Pixel size: 72000 meters (all bands)

| Name | Units | Pixel Size | Description |
|---|---|---|---|
| `vertical_column_enhancement` | ppm m | 72000 meters | Total vertical column enhancement estimate of methane |

### Image Properties

**Image Properties**

| Name | Type | Description |
|---|---|---|
| orbit_identification_number | STRING | Unique Orbit Identification Number |
| scene_identification_number | STRING | Unique scene identification nuber |

### Terms of Use

**Terms of Use**

NASA EMIT data and products acquired through the LP DAAC
have no restrictions on subsequent use, sale, or redistribution.

### Citations

Citations:

- 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 \[Data set\]. NASA EOSDIS Land Processes Distributed Active
  Archive Center. Accessed 2024-02-26 from
  <https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001>

### DOIs

- <https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001>

### Explore with Earth Engine

> [!NOTE]
> **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)

### Code Editor (JavaScript)

```javascript
var dataset = ee.ImageCollection('NASA/EMIT/L2B/CH4ENH');
var emitEnhancement = dataset.select('vertical_column_enhancement');
var emitEnhancementVis = {
  min: 0,
  max: 100.0,
  palette: ['d7191c', 'fdae61', 'ffffbf', 'abd9e9', '2c7bb6'],
};
Map.setCenter(-100.24, 32.04, 5);
Map.addLayer(
    emitEnhancement, emitEnhancementVis,
    'Emit Enhancement');
```
[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/NASA/NASA_EMIT_L2B_CH4ENH) [Earth Surface Mineral Dust Source Investigation- Methane Enhancement](https://developers.google.com/earth-engine/datasets/catalog/NASA_EMIT_L2B_CH4ENH) The 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, ... NASA/EMIT/L2B/CH4ENH, atmosphere,daily,emit,methane,nasa 2022-08-10T00:00:00Z/2024-11-30T19:38:00Z -90 -180 90 180 Google Earth Engine https://developers.google.com/earth-engine/datasets

- [https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001](https://doi.org/https://earth.jpl.nasa.gov/emit/data/data-products/)
- [https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/NASA_EMIT_L2B_CH4ENH)