Results 51 to 60 of about 978,703 (187)

Foehn Winds in the McMurdo Dry Valleys, Antarctica: The Origin of Extreme Warming Events* [PDF]

Journal of Climate, 2010
Abstract Foehn winds resulting from topographic modification of airflow in the lee of mountain barriers are frequently experienced in the McMurdo Dry Valleys (MDVs) of Antarctica. Strong foehn winds in the MDVs cause dramatic warming at onset and have significant effects on landscape forming processes; however, no detailed scientific ...
Speirs, J. C., Steinhoff, D. F., McGowan, H. A., Bromwich, D. H., Monaghan, A. J.   +4 more
openaire   +3 more sources

Variation of the aerosol stratification over the Rhine Valley during Foehn development: a backscatter lidar study

Meteorologische Zeitschrift, 2004
The vertical aerosol stratification within and above the Rhine Valley was studied with a backscatter lidar during FORM (Foehn in the Rhine Valley during MAP) IOPs 4-5, October 1-3, 1999. The lidar site was in Tr¨ubbach, 9° 28 E, 47° 04 N, 490 m asl.
Max Frioud, Valentin Mitev, Renaud Matthey, Hans RIchner, Markus Furger, Stefan Gubser   +5 more
doaj   +1 more source

Elevated foehn exacerbates surface ozone pollution in summer Beijing [PDF]

Atmospheric Chemistry and Physics
While several studies have evaluated the impact of shallow foehn on air pollution, the effects of elevated foehn on O3 pollution remain poorly understood.
Z. Liao, J. Xu, J. Li, L. Zhou, C. Liu, L. Wu, Z. Ma   +6 more
doaj   +1 more source

Potential role of local contributions to record-breaking high-temperature event in Xiamen, China

Weather and Climate Extremes, 2021
A record-breaking extreme high-temperature (EHT) event of 39.6 °C occurred in the coastal city of Xiamen, China, on August 9, 2019. The unique weather background and topographical features of Xiamen resulted in this event.
Fan Wang, Yongwei Wang
doaj   +1 more source

Tracking Summer Greenland Blocking: The Upstream Pathway Shapes Historical Extremes and Future Change

International Journal of Climatology, EarlyView.
This study investigates summer Greenland atmospheric blocking using the Lagrangian tracking Python package blocktrack applied to ERA5 reanalysis and CMIP6 models. Two types of blocks—upstream (Northern Canada origin) and retrograding (Northern Atlantic origin)—are distinguished, with upstream blocks driving recent observed frequency increasing trends ...
Michele Filippucci, Jacob Maddison, Simona Bordoni   +2 more
wiley   +1 more source

Characterising Vento Norte Downslope Windstorms and Their Thermal Impacts in Southern Brazil

International Journal of Climatology, EarlyView.
Using 20 years of hourly INMET observations in Santa Maria (southern Brazil), we identify 189 Vento Norte (VNOR) downslope windstorms, ~72% in winter, marked by abrupt warming, drying and strong northerly gusts. Across five biometeorological indices (TEFW, TDI, THI, HDI, Humidex), VNOR hours consistently show significantly higher thermal discomfort ...
Cinara Ewerling da Rosa, Michel Stefanello, Diego Portalanza, Mateus da Silva Rebelo, Gervasio Annes Degrazia, Milena Marquesin   +5 more
wiley   +1 more source

Spatiotemporal Characteristics and Synoptic Patterns of Dry‐Hot Winds (Sukhoviys) in Ukraine

International Journal of Climatology, EarlyView.
This study analyses dry‐hot winds, or sukhoviys, a recurrent phenomenon during the warm season across Ukraine that contributes to rapid moisture loss from soil and vegetation. The activity of sukhoviy events was assessed using the introduced Sukhoviy Station Index, accounting for their meteorological characteristics and frequency of occurrence.
Inna Semenova, Sergio M. Vicente‐Serrano   +1 more
wiley   +1 more source

Identification and characterization of foehn events in Beijing and their impact on air pollution episodes [PDF]

Atmospheric Chemistry and Physics
This study proposes a method for identifying foehn events in Beijing using automatic weather station (AWS) data, considering upper-air wind direction, topography, meteorological changes, and foehn propagation.
J. Li, J. Li, J. Li, J. Li, J. Zhang, J. Zhang, M. Bai, J. Su, J. Su, Q. Li, Q. Li, X. Jia, X. Jia   +12 more
doaj   +1 more source

Analysis Synoptic Patterns for Forest Fires Risk in Northern of Iran [PDF]

مخاطرات محیط طبیعی, 2018
Iran is one of the countries in the Middle East and North of Africa that face high risk in terms of wildfire occurrence in forested areas. We had used the record data SLP, 850 and 500hpa, temperature, precipitation, relativity humidity, speed and ...
Dariush Rahimi, Samaneh Khademi
doaj   +1 more source

Observations and numerical simulations of a valley‐exit wind in the Alpine Bolzano basin

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The evolution and spreading of the nocturnal valley‐exit wind flowing from the Isarco Valley into the Bolzano basin, in the Italian Alps, are found to be influenced by the basin temperature stratification. Measurements and high‐resolution simulations show that a cold‐air pool favors an upward trajectory of the flow at the exit of the valley.
Federica Gucci, Andrea Zonato, Marco Falocchi, Dino Zardi, Lorenzo Giovannini   +4 more
wiley   +1 more source