Results 51 to 60 of about 981 (262)

Seasonal Variability of Key Climate Parameters in the Mediterranean Region: Distinct Features From A Long‐Term (1940–2023) Analysis

International Journal of Climatology, EarlyView.
The intra‐annual variability of the Mediterranean climate does not include an even transition from winter to summer regime and vice versa. A detailed examination of the long‐term (84 years) mean intra‐annual variations of key parameters reveals remarkable and climatologically important peculiarities. ABSTRACT The intra‐annual variability of atmospheric
Christos J. Lolis
wiley   +1 more source

Mapping the Spatial Scales of Australian Extreme Precipitation Using Daily Rain Gauges

International Journal of Climatology, EarlyView.
We present the first continent‐wide analysis of the spatial scales of daily extreme precipitation events (EPEs) in Australia using station observations and semivariogram analysis. EPEs generally have larger spatial scales at higher latitudes, with strong seasonal and regional differences shaped by topography, meteorological regimes, and climate ...
Dongqi Lin, Kate R. Saunders, Martin S. Singh   +2 more
wiley   +1 more source

Heat and Cold Waves in Brazil: An ERA5‐Based Analysis of Trends and Seasonality (1980–2024)

International Journal of Climatology, EarlyView.
This study uses ERA5 reanalysis data to assess changes in extreme heat and cold events across Brazil from 1980 to 2024. Results reveal a sharp increase in heatwave frequency and a general decline in coldwave occurrences, though regional variations are substantial.
Alindomar Lacerda Silva, Scott Sheridan
wiley   +1 more source

Seasonal Variability of Precipitating Systems in Four Radar Domains of Northeast Brazil

International Journal of Climatology, EarlyView.
This study analyzes the climatology and evaluates how the physical aspects of precipitating systems are influenced by the dry and wet seasons in Northeast Brazil, highlighting seasonal variations in the frequency, size, intensity, and duration of these systems in the regions of Natal, Maceió, Petrolina, and Salvador.
Amanda Carolina da Silva Queiroz, Thiago Souza Biscaro   +1 more
wiley   +1 more source

Atmospheric River Event Frequency Is the Principal Moisture Driver for Radial Growth of High‐Elevation Southern California, USA Conifers, 1658–2020 CE

International Journal of Climatology, EarlyView.
Conifers growing in high‐elevation alpine environments in the mountains of Southern California, USA, are highly responsive to atmospheric river (AR) events, which typically produce heavy precipitation over 1–3 days. However, it is the frequency of the AR events, not their magnitude nor annual precipitation totals, that most affects the radial growth of
Paul A. Knapp, Avery A. Catherwood, Tyler J. Mitchell   +2 more
wiley   +1 more source

Projected 21st Century Changes in Precipitation and Temperature Over Italy Using CMIP6 CMCC‐CM2‐SR5 Model and COSMO‐CLM Dynamical Downscaling

International Journal of Climatology, EarlyView.
This study evaluates the COSMO‐CLM regional climate model over Italy under CMIP6 scenarios. Compared to its driving global model, COSMO‐CLM reduces temperature biases by 50%–75% and better represents precipitation and extremes, adding critical mesoscale detail.
Alejandro Vichot‐Llano, Mario Raffa, Angelo Campanale, Marianna Adinolfi, Gabriella Ceci, Paola Mercogliano   +5 more
wiley   +1 more source

Experimental Study on Sand Removal by a Downhole In Situ Spiral-Swirl Natural Gas Hydrate Coupling Separator

Applied Sciences
In natural gas hydrate exploitation, the large amount of sand production directly or indirectly leads to the low efficiency of hydrate exploitation and even the termination of exploitation.
Yufa He, Yang Tang, Yunjian Zhou, Na Xie, Guorong Wang   +4 more
doaj   +1 more source

Spatiotemporal Changes in Precipitation Concentration in the Atlantic‐European Region

International Journal of Climatology, EarlyView.
This study analyses changes in precipitation concentration using ERA5 and E‐OBS datasets. Gini index as a measure of precipitation concentration revealed a gradual expansion of areas with increasing unevenness in precipitation distribution across the Atlantic‐European region since 1961.
Petr Dobrovolný, David Tichopád, Rudolf Brázdil, Jan Řehoř, Jiří Mikšovský   +4 more
wiley   +1 more source

Optimization and experimental validation of a high-efficiency oil–water cyclone separator for well testing conditions

Journal of Engineering and Applied Science
The performance of surface oil–water cyclone separators impacts the measurement accuracy of crude oil produced from exploration and appraisal wells, thereby influencing the formulation of exploration and development plans.
Zhimin Li
doaj   +1 more source

Large Proportions of Surface Ozone and Premature Mortality Due to a Stratospheric Intrusion Event in North China

International Journal of Climatology, EarlyView.
This study, by examining a typical stratospheric intrusion event that occurred in North China from 30 to 31 July 2021, found that the event led to a sharp increase in near‐surface ozone concentrations by 23 ppbv within 36 h, accounting for 40% of the total observed ozone levels, with localised peaks exceeding 30 ppbv.
Yinghan Sun, Zhicong Yin, Yijia Zhang
wiley   +1 more source