Results 11 to 20 of about 66,872 (284)

How Variable are Cold Pools?

Geophysical Research Letters, 2023
Abstract Cold pools formed by precipitating convective clouds are an important source of mesoscale temperature variability. However, their sub‐mesoscale (100 m–10 km) structure has not been quantified, impeding validation of numerical models and understanding of their atmospheric and societal impacts. We assess temperature variability
Leah D. Grant, Bastian Kirsch, Jennie Bukowski, Nicholas M. Falk, Christine A. Neumaier, Mirjana Sakradzija, Susan C. van den Heever, Felix Ament   +7 more
core   +6 more sources

A climatology of trade-wind cumulus cold pools and their link to mesoscale cloud organization [PDF]

Atmospheric Chemistry and Physics, 2021
We present a climatology of trade cumulus cold pools and their associated changes in surface weather, vertical velocity and cloudiness based on more than 10 years of in situ and remote sensing data from the Barbados Cloud Observatory.
R. Vogel, H. Konow, H. Schulz, P. Zuidema   +3 more
doaj   +3 more sources

Extremely cold ocean temperatures in iron formation brine pools of snowball Earth [PDF]

Nature Communications
For the severe low-latitude “snowball Earth” glaciations, glacial deposits occurring on all continents is well-established. However, cold, salty, ice-covered oceans—a salient prediction of snowball Earth—is difficult to establish geologically.
Kai Lu, Lianjun Feng, Ross N. Mitchell, Maxwell A. Lechte, Paul F. Hoffman   +4 more
doaj   +2 more sources

Can Convective Cold Pools Lead to the Development of Low‐Level Jets?

Geophysical Research Letters, 2023
We present the first observational evidence for convectively generated cold pools (CP) as driving mechanism for low‐level jets (LLJ). Our findings are based on a unique campaign data set that allowed us to perform a systematic assessment of the process ...
E. W. Luiz, S. Fiedler
doaj   +2 more sources

Absence of West Nile and Usutu Virus Persistence in Overwintering Mosquitoes in Northeastern France: Insights from Cold-Season Surveillance [PDF]

Viruses
Emerging arboviruses of the Orthoflavivirus genus such as West Nile virus (WNV) and Usutu virus (USUV), primarily transmitted by Culex mosquitoes, pose significant public health threats due to their ability to cause severe neurological diseases in humans
Pauline Jourdan, Jean-Philippe Martinet, Hubert Ferté, Bruno Mathieu, Marie Vazeille, Jérôme Depaquit, Anna-Bella Failloux, Anouk Decors, Rémi Charrel   +8 more
doaj   +2 more sources

Strong and weak cold pool collisions [PDF]

, 2022
Collisions between convective cold pools commonly initiate new convective storms. This occurs through enhancements to the vertical velocity through mechanical forcing, and increased water vapor content via thermodynamic forcing. The goal of this study is to investigate the impact of the following four parameters on the mechanical and thermodynamic ...
Falk, Nicholas Michael, author, van den Heever, Susan C., advisor, Schumacher, Russ S., committee member, Venayagamoorthy, Subhas K., committee member   +3 more
openaire   +2 more sources

Aircraft observations of cold pools under marine stratocumulus [PDF]

Atmospheric Chemistry and Physics, 2013
Although typically associated with precipitating cumuli, cold pools also form under shallower stratocumulus. This study presents cold-pool observations as sampled by the NSF/NCAR C-130, which made cloud and boundary-layer measurements over the ...
C. R. Terai, R. Wood
doaj   +1 more source

Convective memory, and the role of cold pools

, 2020
La mémoire de la convection et le rôle des poches froides Les paramétrisations représentent encore mal la variabilité spatio-temporelle de la convection. Cela peut provenir du fait qu’elles supposent que la convection peut être diagnostiquée à partir des conditions de grande échelle. La mémoire de la convection, traduisant la dépendance
Colin, Maxime
openaire   +5 more sources

Cold pool dissipation [PDF]

Journal of Geophysical Research: Atmospheres, 2016
AbstractThe mechanisms by which sensible heat fluxes (SHFs) alter cold pool characteristics and dissipation rates are investigated in this study using idealized two‐dimensional numerical simulations and an environment representative of daytime, dry, continental conditions.
Leah D. Grant, Susan C. van den Heever
openaire   +1 more source

Sensitivity of Summertime Convection to Aerosol Loading and Properties in the United Arab Emirates

Atmosphere, 2021
The Weather Research and Forecasting (WRF) model is used to investigate convection–aerosol interactions in the United Arab Emirates (UAE) for a summertime convective event. Both an idealized and climatological aerosol distributions are considered.
Ricardo Fonseca, Diana Francis, Michael Weston, Narendra Nelli, Sufian Farah, Youssef Wehbe, Taha AlHosari, Oriol Teixido, Ruqaya Mohamed   +8 more
doaj   +1 more source