Recent methane surges reveal heightened emissions from tropical inundated areas.

Record breaking atmospheric methane growth rates were observed in 2020 and 2021 (15.2±0.5 and 17.

Regional estimation of methane emissions over the peninsular India using atmospheric inverse modelling.

Accurate renditions of country-scale methane (CH) emissions are critical in understanding the regional CH budget and essential for adapting national climate mitigation policies to curtail the atmospheric build-up of this greenhouse gas with high warming potential. India housing 30% of the Asian population is currently appraised as a region of CH source based on the inventories. To date, there have not been many reported efforts to estimate the regional CH emissions using direct measurements of boundary layer CH concentrations at multiple locations over India.

Benefits of satellite XCO and newly proposed atmospheric CO observation network over India in constraining regional CO fluxes.

Top-down modeling estimates are among the most reliable information available on the CO fluxes of the earth system. The inadequate coverage of CO observing stations over the tropical regions adds a limitation to this estimate, especially when the satellite XCO is strictly screened for cloud contamination, aerosol, dust, etc. In this study, we investigated the potential benefit of a global ground-based observing station network, 17 newly proposed stations over India, and global satellite XCO in reducing the uncertainty of terrestrial biospheric fluxes of Tropical Asia-Eurasia in TransCom cyclo-stationary inversion.