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research article

Negative elevation-dependent warming trend in the Eastern Alps

Tudoroiu, M.
•
Eccel, E.
•
Gioli, B.
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2016
Environmental Research Letters

Mountain regions and the important ecosystem services they provide are considered to be very vulnerable to the current warming, and recent studies suggest that high-mountain environments experience more rapid changes in temperature than environments at lower elevations. Here we analysed weather records for the period 1975-2010 from the Eastern Italian Alps that show that warming occurred both at high and low elevations, but it was less pronounced at high elevations. This negative elevation-dependent trend was consistent for mean, maximum and minimum air temperature. Global radiation data measured at different elevations, surface energy fluxes measured above an alpine grassland and above a coniferous forest located at comparable elevations for nine consecutive years as well as remote sensing data (MODIS) for cloud cover and aerosol optical depth were analysed to interpret this observation. Increasing global radiation at low elevations turned out to be a potential driver of this negative elevation-dependent warming, but also contributions from land use and land cover changes at high elevations (abandonment of alpine pastures, expansion of secondary forest succession) were taken into account. We emphasise though, that a negative elevation-dependent warming is not universal and that future research and in particular models should not neglect the role of land use changes when determining warming rates over elevation.

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Type
research article
DOI
10.1088/1748-9326/11/4/044021
Web of Science ID

WOS:000375746800025

Author(s)
Tudoroiu, M.
Eccel, E.
Gioli, B.
Gianelle, D.
Schume, H.
Genesio, L.
Miglietta, F.
Date Issued

2016

Publisher

Iop Publishing Ltd

Published in
Environmental Research Letters
Volume

11

Issue

4

Article Number

044021

Subjects

elevation-dependent warming

•

land use change

•

solar brightening and dimming

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
IIE  
Available on Infoscience
July 19, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/127292
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