Results 61 to 70 of about 8,973 (222)
Modulation of North Atlantic atmospheric rivers by the Gulf Stream
Quarterly Journal of the Royal Meteorological Society, EarlyView.Gulf Stream ocean variability plays a key role in modulating atmospheric river (AR) activity over the North Atlantic during winter and spring at monthly time‐scales. Increased ocean heat transport and mesoscale activity in the Gulf Stream are linked to northward shifts in ARs, while stronger surface heat fluxes drive ARs southward.
Ferran Lopez‐Marti +3 more
wiley +1 more source
Synoptic events associated with the land surface temperature in Rio de Janeiro
Bioscience Journal, 2017 This article aimed to evaluate land surface temperature using MOD11A2 (Terra satellite) with spatial resolution of one kilometre, compares its findings with land surface temperature data gathered by conventional meteorological stations, and, finally ...
Rafael Coll Delgado +4 more
doaj +3 more sources
A Madden‐Julian Oscillation in tropospheric ozone [PDF]
Geophysical Research Letters, 2003 This study shows evidence of a Madden‐Julian Oscillation (MJO) in tropospheric ozone. Tropospheric ozone is derived using differential measurements of total column ozone and stratospheric column ozone from total ozone mapping spectrometer (TOMS) and microwave limb sounder (MLS) instruments.
J. R. Ziemke, S. Chandra
openaire +1 more source
How consistently do ensemble prediction systems represent the growth of atmospheric uncertainty?
Quarterly Journal of the Royal Meteorological Society, EarlyView.Spread‐based diagnostics calculated for 12 ensemble prediction systems are compared to understand the consistency with which they represent atmospheric uncertainty growth. Good correlation between all these systems is found in the extratropics for a lead time range from 48 hr to between 96 hr and 192 hr.
Douglas Wood +3 more
wiley +1 more source
An opportunity index to anticipate when subseasonal predictions are useful
Quarterly Journal of the Royal Meteorological Society, EarlyView.Simultaneously active subseasonal windows of forecast opportunity can be combined into a single opportunity index, which can be used operationally to anticipate enhanced or reduced subseasonal prediction skill. For predictions of temperature anomalies in Switzerland during summer—a region and season with particularly low predictability—skill can nearly
Dominik Büeler +4 more
wiley +1 more source
The relationship between equatorial wave interaction and heavy rainfall in Southeast Asia
Quarterly Journal of the Royal Meteorological Society, EarlyView.This study examines the statistical relationship between co‐occurring equatorial waves and heavy rainfall in Southeast Asia. Heavy rainfall is more closely related to combined wave activity than to individual waves in many regions of Southeast Asia. The figure shows GPM–IMERG rainfall (shading) and ERA5 850‐hPa winds (vectors) composited on days when ...
Samantha Ferrett +7 more
wiley +1 more source
Potential Vorticity of the Madden–Julian Oscillation
Journal of the Atmospheric Sciences, 2012 Abstract This study explores the extent to which the dynamical structure of the Madden–Julian oscillation (MJO), its evolution, and its connection to diabatic heating can be described in terms of potential vorticity (PV). The signature PV structure of the MJO is an equatorial quadrupole of cyclonic and anticyclonic PV that tilts westward
Jian Ling, Chidong Zhang
openaire +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.This study reveals that the combined effects of the North Atlantic Oscillation (NAO) and anomalous Indo‐Pacific Walker circulation on the excitation of the wave train along the wintertime subtropical jet strongly depend on their phase combination. Their impacts interfere constructively or destructively over South Asia, leading to notable differences in
Yuki Asazuma +2 more
wiley +1 more source
Geophysical Research LettersPrevious studies demonstrate that the Madden‐Julian Oscillation (MJO) modulates tropical cyclone (TC) activity over various locations worldwide. Since TCs are associated with anomalous large‐scale circulations, they can influence the development of the ...
Suyang Pei, Toshiaki Shinoda
doaj +1 more source
A retrospective on the 2025 Atlantic hurricane season
Weather, EarlyView.The 2025 Atlantic hurricane season was intermittent, with extended quiet periods separated by three clusters of activity. The broad‐scale conditions were often unfavourable for cyclogenesis and common drivers of activity such as La Niña were weak, but well above‐average sea temperatures still supported intense storms.
Charles W. Powell
wiley +1 more source