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GHGSat Spectra Catalogue
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Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions https://earth.esa.int/eogateway/documents/20142/1560778/ESA-Third-Party-Missions-Terms-and-Conditions.pdf#GHGSAT
GHGSat data produce measures of vertical column densities of greenhouse gas emissions (currently CH4, but eventually CO2), provided on a pre-defined area of 12 km x 12 km, from the full sensor field-of-view. GHGSat Catalogue and New Collect data are available in three different data types: • Single Observation: a single observation of a scene. • Monthly Monitoring: guaranteed 12 successful observations in a year over a given site (once per month or flexible best effort cadence depending on weather). • Weekly Monitoring: guaranteed 52 successful observations in a year over a given site (once a week or flexible best effort cadence based on weather), to accommodate large & persistent monitoring needs. Data are provided as an Emissions package containing the following products: • Abundance dataset (Level 2): Set of per-pixel abundances in excess of the local background (ppb) for a single species, and per-pixel measurement error expressed as a standard deviation for a single site on a single satellite pass. Data format is 16-bit GeoTIFF. • Concentration Maps (Level 2): High readability pseudocolour map combining surface reflectance, and column density expressed in ppb for a single species in PNG format. The relevant abundance dataset is provided as well. • Emission Rates (Level 4): Instantaneous rate for a detected emission from a targeted source estimated using abundance datasets from a single satellite pass and applying dispersion modelling techniques. The delivered product includes the emission rate estimate with uncertainty and key dispersion parameters (in CSV format) as well as the abundance dataset used for the emission estimate. This product is only delivered in the Emissions package if an emission is detected within the abundance dataset. The Level 2 products will be delivered regardless of whether or not an emission is detected. The properties of the available products are summarised in the following table: Band(s) / Beam Mode(s) and Polarisation SWIR (1635-1675 nm), multiple bands, unpolarised Spatial Resolution <30 m Scene Size 12 km x 12 km Species Measured CH4 Geometric Corrections Radial distortion, perspective projection Radiometric Corrections Detector pixel response, ghosting, spectral response, atmospheric correction including trace gas modelling and surface reflectance Details about the data provision, data access conditions and quota assignment procedure are described in the GHGSat _$$Terms of Applicability$$ https://earth.esa.int/eogateway/documents/20142/37627/GHGSat-Terms-of-Applicability.pdf .
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ESA/ESRIN
Access Guide
GHGSat Terms of Applicability
C1/C2 Satellite Imagery and Data - Product Description
GHGSAT
Product Guide
GHGSAT Software Tools
EARTH SCIENCE>ATMOSPHERE>ATMOSPHERIC CHEMISTRY