Article Synopsis
- Carbon dioxide and methane are key human-made factors affecting climate change, causing uncertainty in global carbon accounting.
- NASA's EMIT imaging spectrometer has provided the first detailed observations of fine-scale emissions from various sectors, quantifying methane and carbon dioxide sources.
- Regional variations were noted, with Turkmenistan showing the highest methane emissions, underscoring the importance of targeted imaging for improving carbon budget accuracy.
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Article Abstract
Carbon dioxide and methane emissions are the two primary anthropogenic climate-forcing agents and an important source of uncertainty in the global carbon budget. Uncertainties are further magnified when emissions occur at fine spatial scales (<1 km), making attribution challenging. We present the first observations from NASA's Earth Surface Mineral Dust Source Investigation (EMIT) imaging spectrometer showing quantification and attribution of fine-scale methane (0.3 to 73 tonnes CH hour) and carbon dioxide sources (1571 to 3511 tonnes CO hour) spanning the oil and gas, waste, and energy sectors. For selected countries observed during the first 30 days of EMIT operations, methane emissions varied at a regional scale, with the largest total emissions observed for Turkmenistan (731 ± 148 tonnes CH hour). These results highlight the contributions of current and planned point source imagers in closing global carbon budgets.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10656068 | PMC |
| http://dx.doi.org/10.1126/sciadv.adh2391 | DOI Listing |
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