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@MASTERSTHESIS{Suresh:1022045,
author = {Suresh, Simran and Naz, Bibi and Kusche, Jürgen},
title = {{I}dentifying {T}rends in the {T}emporal {S}ignatures of
{S}now and its {I}mpact on {C}atchment {H}ydrology over
{E}urope during 2000–2022},
school = {University of Bonn},
type = {Masterarbeit},
reportid = {FZJ-2024-01182},
pages = {50},
year = {2024},
note = {Masterarbeit, University of Bonn, 2023},
abstract = {Studying snow is crucial as it impacts the hydrological
cycle as well as the albedo, thereby theradiation budget.
Therefore, changes in snow patterns can affect water
availability, river flowpatterns, and overall catchment
water balance. This thesis aims to investigate trends
insnowpack variables and their potential impacts on
hydrological processes for snow-dominatedand
snow-rain-dominated regions in Europe. To identify trends in
snowpack variables, Europeanwatersheds are classified into
snow and snow-rain-dominated based on the snowfall
fractionfrom the E-OBS meteorological data and a temperature
and precipitation threshold. For thesewatersheds, snowfall
(SF), and rainfall (RF) from in-situ meteorological data,
snow coverduration (SCD) from MODIS satellite, and snow
water equivalent (SWE) from ESA GLOBSNOWand GLWS2.0 products
are analyzed to find trends and patterns during 2000-2022.
Additionally,river discharge data at 862 Global Runoff Data
Center (GRDC) stations were also compiled toinvestigate the
impact of snow trends on changes in river flow and center of
timing (CT). Resultsshow increasing trends in SF, SWE, and
discharge and decreasing trends in SCD insnow-dominated
watersheds. Seasonally, the trends in both snowpack
variables and rainfall aremore pronounced in the winter than
spring season. In addition, the increasing trends in
meandischarge show a strong positive correlation with
increasing SWE, particularly in thesnow-dominated
watersheds. However, the trends in CT indicate shifts of 2-3
days across manystations, suggesting an accelerated melting
of snow attributed to rising temperatures. Thesetrends align
with the concurrent decreasing trend in SCD. Furthermore,
water availability isassessed by comparing the change in
snowpack and streamflow anomalies with total waterstorage
(TWS) from GRACE satellites. Overall, the TWS shows a
decreasing trend in the snowand snow-rain-dominated
watersheds which we suggest is due to rapid snowmelt at
hightemperatures despite high SF and SWE. These results
highlight the important changes incryosphere–hydrological
processes in the recent past, providing valuable information
forintegrated water resource management in Europe.},
cin = {IBG-3},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217) / SFB 1502 C04 - Assimilation von
Schnee-Satellitendaten und ihre Auswirkungen auf den
hydrologischen Kreislauf und die atmosphärischen Flüsse
(C04) (495864060)},
pid = {G:(DE-HGF)POF4-2173 / G:(GEPRIS)495864060},
typ = {PUB:(DE-HGF)19},
doi = {10.34734/FZJ-2024-01182},
url = {https://juser.fz-juelich.de/record/1022045},
}