Fiducial Reference Measurements for Greenhouse Gases (FRM4GHG): Validation of Satellite (Sentinel-5 Precursor, OCO-2, and GOSAT) Missions Using the COllaborative Carbon Column Observing Network (COCCON)

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(5), P. 734 - 734

Published: Feb. 20, 2025

The COllaborative Carbon Column Observing Network has become a reliable source of high-quality ground-based remote sensing network data that provide column-averaged dry-air mole fractions carbon dioxide (XCO2), methane (XCH4), and monoxide (XCO). fiducial reference measurements these gases from the COCCON complement TCCON NDACC-IRWG data. This study shows application for validation existing greenhouse gas satellite products. includes XCH4 XCO products European Copernicus Sentinel-5 Precursor (S5P) mission, XCO2 American Orbiting Observatory-2 (OCO-2) Japanese Greenhouse SATellite (GOSAT). A total 27 datasets contributed to this study; some were collected in framework campaign activities covered only short time period. In addition, several permanent stations provided long-term observations. random uncertainties results, specifically S5P with lot coincidences pairs, are found be similar comparison TCCON. results OCO-2 land nadir glint observation modes on global scale, despite limited coincidences, very promising. can, therefore, expand coverage already sites NDACC network. can used future model studies cycle studies.

Language: Английский

Spatiotemporal estimation of near-surface CO ₂ concentrations over the global continent based on hybrid machine learning model

Annals of GIS, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 16

Published: March 27, 2025

Language: Английский