High temperature sensitivity of Arctic isoprene emissions explained by sedges
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High temperature sensitivity of Arctic isoprene emissions explained by sedges. / Wang, Hui; Welch, Allison M.; Nagalingam, Sanjeevi; Leong, Christopher; Czimczik, Claudia I.; Tang, Jing; Seco, Roger; Rinnan, Riikka; Vettikkat, Lejish; Schobesberger, Siegfried; Holst, Thomas; Brijesh, Shobhit; Sheesley, Rebecca J.; Barsanti, Kelley C.; Guenther, Alex B.
I: Nature Communications, Bind 15, Nr. 1, 6144, 2024.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - High temperature sensitivity of Arctic isoprene emissions explained by sedges
AU - Wang, Hui
AU - Welch, Allison M.
AU - Nagalingam, Sanjeevi
AU - Leong, Christopher
AU - Czimczik, Claudia I.
AU - Tang, Jing
AU - Seco, Roger
AU - Rinnan, Riikka
AU - Vettikkat, Lejish
AU - Schobesberger, Siegfried
AU - Holst, Thomas
AU - Brijesh, Shobhit
AU - Sheesley, Rebecca J.
AU - Barsanti, Kelley C.
AU - Guenther, Alex B.
N1 - Publisher Copyright: © The Author(s) 2024.
PY - 2024
Y1 - 2024
N2 - It has been widely reported that isoprene emissions from the Arctic ecosystem have a strong temperature response. Here we identify sedges (Carex spp. and Eriophorum spp.) as key contributors to this high sensitivity using plant chamber experiments. We observe that sedges exhibit a markedly stronger temperature response compared to that of other isoprene emitters and predictions by the widely accepted isoprene emission model, the Model of Emissions of Gases and Aerosols from Nature (MEGAN). MEGAN is able to reproduce eddy-covariance flux observations at three high-latitude sites by integrating our findings. Furthermore, the omission of the strong temperature responses of Arctic isoprene emitters causes a 20% underestimation of isoprene emissions for the high-latitude regions of the Northern Hemisphere during 2000-2009 in the Community Land Model with the MEGAN scheme. We also find that the existing model had underestimated the long-term trend of isoprene emissions from 1960 to 2009 by 55% for the high-latitude regions.
AB - It has been widely reported that isoprene emissions from the Arctic ecosystem have a strong temperature response. Here we identify sedges (Carex spp. and Eriophorum spp.) as key contributors to this high sensitivity using plant chamber experiments. We observe that sedges exhibit a markedly stronger temperature response compared to that of other isoprene emitters and predictions by the widely accepted isoprene emission model, the Model of Emissions of Gases and Aerosols from Nature (MEGAN). MEGAN is able to reproduce eddy-covariance flux observations at three high-latitude sites by integrating our findings. Furthermore, the omission of the strong temperature responses of Arctic isoprene emitters causes a 20% underestimation of isoprene emissions for the high-latitude regions of the Northern Hemisphere during 2000-2009 in the Community Land Model with the MEGAN scheme. We also find that the existing model had underestimated the long-term trend of isoprene emissions from 1960 to 2009 by 55% for the high-latitude regions.
U2 - 10.1038/s41467-024-49960-0
DO - 10.1038/s41467-024-49960-0
M3 - Journal article
C2 - 39034371
AN - SCOPUS:85199190874
VL - 15
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 6144
ER -
ID: 399672581