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Atmospheric jet stream variability reflects vegetation activity in Europe

Messori, Gabriele and Wu, Minchao and Vico, Giulia and Galfi, Vera Melinda (2022). Atmospheric jet stream variability reflects vegetation activity in Europe. Agricultural and Forest Meteorology. 322 , 109008
[Research article]

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Abstract

Jet streams are a key component of the climate system, whose dynamics couple closely to regional climate variability. Yet, the link between jet stream variability and vegetation activity has received little attention. Here, we leverage our understanding of the mid-latitude jet stream dynamics over the Euro-Atlantic sector to probe climate-vegetation interactions across Europe. We link indices related to the meridional location of the jet and the large-scale zonal wind speed with remotely-sensed vegetation greenness anomalies during locally-defined growing seasons. Correlations between greenness anomalies and jet latitude anomalies point to a control of the jet stream's variability on vegetation activity over large parts of Europe. This potential control is mediated by the jet latitude anomalies' correlations with temperature, soil moisture and downward surface solar radiation. The sign and strength of these correlations depend on location and time of the year. Furthermore, jet stream variability modulates conditions at the onset and end of the growing season. The link between jet latitude anomalies and vegetation greenness is not only specific to the climate zone, but also to the landclass and subperiod within the growing season. It is thus important to use a locally-defined growing season for interpreting the atmospheric controls on regional vegetation phenology. Results consistent with the correlation analysis emerge when focussing on local high or low greenness months only or on zonal wind speed anomalies, confirming the relevance of jet variability for vegetation activity.

Authors/Creators:Messori, Gabriele and Wu, Minchao and Vico, Giulia and Galfi, Vera Melinda
Title:Atmospheric jet stream variability reflects vegetation activity in Europe
Series Name/Journal:Agricultural and Forest Meteorology
Year of publishing :2022
Volume:322
Article number:109008
Number of Pages:10
Publisher:ELSEVIER
ISSN:0168-1923
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Climate Research
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Physical Geography
Keywords:Jet Stream, Vegetation, Europe, EVI2
URN:NBN:urn:nbn:se:slu:epsilon-p-117995
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-117995
Additional ID:
Type of IDID
DOI10.1016/j.agrformet.2022.109008
Web of Science (WoS)000808575200003
ID Code:28607
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Crop Production Ecology
Deposited By: SLUpub Connector
Deposited On:26 Aug 2022 11:51
Metadata Last Modified:26 Aug 2022 12:01

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