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Geostationary satellite reveals increasing marine isoprene emissions in the center of the equatorial Pacific Ocean

Environmental Studies and Forestry

Geostationary satellite reveals increasing marine isoprene emissions in the center of the equatorial Pacific Ocean

W. Zhang and D. Gu

This groundbreaking research conducted by Wentai Zhang and Dasa Gu explores the significant variations in marine isoprene emissions across the western Pacific and eastern Indian Oceans. Discover how unexpectedly high emissions in the central equatorial Pacific Ocean challenge previous understandings, alongside intriguing satellite observations linking NO2 and aerosol formation from isoprene in the remote ocean.

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Playback language: English
Abstract
Marine isoprene emission estimates vary significantly, hindering understanding of their spatiotemporal variations. This study uses Himawari-8 observations and model simulations to estimate marine isoprene emissions in the western Pacific and eastern Indian Oceans. Unexpectedly high emissions were found in the central equatorial Pacific Ocean (CEPO), exceeding those in the North and South Pacific. Remarkably, CEPO emissions increased by 5.5 ± 0.1% per year (2015-2020), with no significant trends elsewhere. Satellite observations suggest NO2 plays a crucial role in aerosol formation from isoprene in the remote ocean.
Publisher
npj Climate and Atmospheric Science
Published On
Nov 02, 2022
Authors
Wentai Zhang, Dasa Gu
Tags
marine isoprene emissions
Himawari-8 observations
central equatorial Pacific Ocean
NO2
aerosol formation
spatiotemporal variations
model simulations

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