Results 71 to 80 of about 14,946 (263)

Space-time trends in U.S. meteorological droughts

Journal of Hydrology: Regional Studies, 2016
Understanding droughts in a climate context remains a major challenge. Over the United States, different choices of observations and metrics have often produced diametrically opposite insights. This paper focuses on understanding and characterizing meteorological droughts from station measurements of precipitation.
Ganguli, P., Ganguly, A.
openaire   +5 more sources

Extreme Climate Events in Morocco: Historical Analysis and Future Projections Based on CMIP6 Simulations

International Journal of Climatology, EarlyView.
Historical observations and bias‐corrected CMIP6 projections reveal intensifying warm extremes, declining cold events and increasingly irregular precipitation patterns across Morocco. Future warming, particularly under SSP5‐8.5, produces an almost linear amplification of heat, aridity and hydrological stress, leading to longer droughts and more intense
Oualid Hakam, Abdelhakim Amazirh, El Houssaine Bouras, Victor Ongoma, Abdelghani Chehbouni   +4 more
wiley   +1 more source

Contrasting seasonal variations between the genesis frequency and intensity of Tibetan Plateau vortices

Environmental Research Communications
Precipitation over the Tibetan Plateau (TP) is vital to regional and surrounding water resources. TP vortices (TPVs) are major precipitation systems over the TP, often inducing heavy precipitation locally and in downstream East Asia.
Qitong Sun, Lun Li, Renhe Zhang, Chenyang Liu, Siyang Cheng   +4 more
doaj   +1 more source

Analysis of Climate Variability of Homogeneous Regions of Rainfall Anomalies in Southeast South America (SESA)

International Journal of Climatology, EarlyView.
We studied rainfall variability and cyclicity in six Homogeneous Regions of Rainfall Anomalies (HRRA) in Southeast South America (SESA) from 1961 to 2020 to understand the occurrence of droughts and above‐average rainfall. We use a continental analysis scale, focusing on seasonal, interannual, and interdecadal cycles, and their association with modes ...
Tainã Costa Peres, Francisco Eliseu Aquino, Denilson Ribeiro Viana, Éder Leandro Bayer Maier, Pedro Teixeira Valente   +4 more
wiley   +1 more source

Spatial-temporal dynamics of meteorological and groundwater drought in Northwest China: Propagation, threshold, recovery time, drivers

Journal of Hydrology: Regional Studies
Study region: Northwest China Study focus: Understanding the propagation mechanism from meteorological to groundwater drought is crucial for groundwater management and drought early warning.
Jianan Shan, Rui Zhu, Zhenliang Yin, Chunshuang Fang, Rong Li, Ganlin Zhou   +5 more
doaj   +1 more source

Degradation of Seasonally Frozen Ground in the Three–River Source Region and Its Correlation Impact Within Precipitation–Runoff Process

International Journal of Climatology, EarlyView.
This study reveals how climate change alters the water cycle in the Three Rivers Source region by degrading its important ‘solid groundwater’ (seasonally frozen ground). We found that runoff response varies by watershed and the role of permafrost decreases sharply, making water supply more dependent on rainfall and becoming increasingly vulnerable ...
Chenchen Ren, Xiangde Xu, Jieru Ma, Bingrong Zhou, Na Dong, Wenyue Cai, Chunzhu Wang   +6 more
wiley   +1 more source

Projections of Meteorological Drought and Potential Evapotranspiration Using the RegCM4 Over Northeastern Iran

International Journal of Climatology, EarlyView.
We downscale CanESM2 with the Regional Climate Model version 4 (20 km) and evaluate against 15 stations to derive monthly PET (Hargreaves–Samani) and SPEI for northeastern Iran (1990–2009, 2040–2059, 2080–2099). Results show robust PET increases and a shift toward more negative monthly SPEI—especially April–September—indicating earlier onset and longer
Nasrin Salehnia, Peter T. Wolter, Sylvester Chikabvumbwa, Fateme Hosseini, Sohrab Kolsoumi, Ali Farid, Hashem Zahedipour   +6 more
wiley   +1 more source

Differences Among the Precipitation Variations Over the Lower Reaches of the Jinsha River Basin on Southeastern Tibetan Plateau in June, July, and August

Advances in Meteorology
Based on observed precipitation, European Centre for Medium-Range Weather Forecasts Reanalysis 5 (ERA5) reanalysis and global sea surface temperature (SST) datasets, this article investigates the interannual variations of precipitation over the lower ...
Mengyu Deng, Miaoyuan Xiao, Zhiyi Zhao, Shufeng Tian, Duming Gao, Bo Zeng   +5 more
doaj   +1 more source

Detection, Attribution and Projection of Precipitation Structure Changes Over Northwest China

International Journal of Climatology, EarlyView.
The precipitation structure shows a change trend of ‘the frequency of light precipitation decreased and the intensity of heavy precipitation increased’; attribution analysis shows that greenhouse gas forcing (GHG) is the main driving factor of precipitation structure change, and the model underestimates its impact, while aerosol forcing (AER) and ...
Shigen Wang, Wei Li, Lianyi Guo, Siyan Dong   +3 more
wiley   +1 more source

Assessing the Performance of the Copernicus European Regional Reanalysis Dataset in Reproducing Extreme Weather Events in Poland

International Journal of Climatology, EarlyView.
Global reanalyses, for example ERA5 and ERA5‐Land, tend to misrepresent the local‐scale weather extremes due to the limited spatial resolution. In this paper CERRA shows clear and consistent improvements over ERA5 and ERA5‐Land in representing extreme temperature and precipitation in Poland, particularly for localized and short‐lived heavy rainfall ...
Kinga Kulesza, Maciej Jefimow, Joanna Strużewska   +2 more
wiley   +1 more source