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Verfasst von:Wang, Menghao [VerfasserIn]   i
 Menzel, Lucas [VerfasserIn]   i
 Jiang, Shanhu [VerfasserIn]   i
 Ren, Liliang [VerfasserIn]   i
 Xu, Chong-Yu [VerfasserIn]   i
 Cui, Hao [VerfasserIn]   i
Titel:Evaluation of flash drought under the impact of heat wave events in southwestern Germany
Verf.angabe:Menghao Wang, Lucas Menzel, Shanhu Jiang, Liliang Ren, Chong-Yu Xu, Hao Cui
E-Jahr:2023
Jahr:15 December 2023
Umfang:16 S.
Illustrationen:Illustrationen
Fussnoten:Online verfügbar: 4. September 2023, Artikelversion: 7. September 2023 ; Gesehen am 20.12.2023
Titel Quelle:Enthalten in: The science of the total environment
Ort Quelle:Amsterdam [u.a.] : Elsevier Science, 1972
Jahr Quelle:2023
Band/Heft Quelle:904(2023) vom: Dez., Artikel-ID 166815, Seite 1-16
ISSN Quelle:1879-1026
Abstract:Flash droughts are a recently recognised type of extreme drought defined by the rapid onset and strong intensification of drought conditions. Our understanding of flash drought processes under the influence of heat waves needs to be improved in the context of global warming. Here, we applied a physically based hydrological model, i.e., TRAnspiration and INterception (TRAIN) model to simulate root zone soil moisture (RZSM) and evapotranspiration (ET) with daily time steps and at a 1 × 1 km resolution to identify and assess flash droughts. Two states, Baden-Württemberg (BW) and Rhineland-Palatinate (RP), located in southwestern Germany, were selected as the study areas. Three datasets, the Global Land Evaporation Amsterdam Model (GLEAM) dataset, ERA5-Land (land component of the fifth generation of European ReAnalysis) dataset, and SMAP-L4 (Soil Moisture Active Passive Level-4) dataset, were selected to evaluate the TRAIN simulated RZSM and ET from 1961 to 2016. The results show that the simulated RZSM had the highest correlation with the ERA5-Land products, followed by SMAP-L4 and GLEAM, with regional average correlation coefficients (CC) of 0.765, 0.762, and 0.746, respectively. The CC of the TRAIN simulated ET with ERA5-Land and GLEAM ET were 0.828 and 0.803, respectively. The results of the trend analyses showed a significant increase (p < 0.05) in the number of flash droughts and heat waves in both the BW and RP states. A comparative analysis revealed that the mean duration and onset speed of flash droughts in BW (RP) without heat waves were 10.42 (10.67) pentads and 19.69th percentile/pentad (17.16th percentile/pentad), respectively, while associated with heat waves they were 8.95 (9.53) pentads and 21.77th percentile/pentad (19.91th percentile/pentad), respectively. This indicates that flash droughts under the influence of heat waves are generally shorter in duration but faster in occurrence. The findings of this study have important implications for flash drought assessment, monitoring, and mitigation under the impact of heat waves.
DOI:doi:10.1016/j.scitotenv.2023.166815
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1016/j.scitotenv.2023.166815
 Volltext: https://www.sciencedirect.com/science/article/pii/S0048969723054402
 DOI: https://doi.org/10.1016/j.scitotenv.2023.166815
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Evapotranspiration
 Flash drought
 Heat waves
 Root zone soil moisture
 TRAIN model
K10plus-PPN:1876543752
Verknüpfungen:→ Zeitschrift

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