Results 81 to 90 of about 2,535 (244)

Persisting Modulation of Interdecadal Pacific Oscillation on Near‐Future Winter Precipitation Projections in Northern Europe

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract European winter precipitation profoundly influences regional hydroclimate, yet the relative roles of internal variability and external forcing in its decadal changes remain elusive. Using large‐ensemble climate simulations, we identify the Interdecadal Pacific Oscillation (IPO) as a potential driver of interdecadal changes in winter northern ...
Mengyuan Yao, Haosu Tang, Gang Huang
wiley   +1 more source

Direct measurement of geopotential geight by the hirdls instrument

open access: yesAdvances in Space Research, 1998
Abstract The HIRDLS instrument is an infrared limb sounder which will be part of the NASA EOS-Chem payload to be launched in 2002. It will measure temperature, various minor constitutents, polar stratospheric clouds, aerosols and geopotential height gradients in the upper troposphere and middle atmosphere with a much better combined vertical and ...
Barnett, J, Venters, P, Gille, J
openaire   +2 more sources

Comparing Synoptic Pattern Evolution for Flash‐Flood‐Producing and Non‐Flash‐Flood‐Producing Mesoscale Convective Systems in the United States

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Understanding how the short‐term evolution of synoptic weather patterns influence Mesoscale Convective Systems (MCSs) is essential, as these systems are responsible for over half of central U.S. flash floods, leading to substantial socioeconomic and water resource management impacts. This study analyzes long‐term MCS data, flash flood reports,
Wenjun Cui   +4 more
wiley   +1 more source

Warming of the Mid‐Troposphere Driven by Evapotranspiration During Compound Heatwave and Drought Events

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract During compound heatwave and drought events (CHDE), a significant amount of soil moisture is released into the atmosphere through evapotranspiration. In this study, we used multi‐source atmospheric water vapor isotope data sets, including satellite and ground‐based observations, to investigate the role of evapotranspired water vapor (EWV ...
Tao Xu   +8 more
wiley   +1 more source

Interdecadal Increase in Spring‐To‐Summer Persistence of Central American Precipitation Anomalies

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Central American agriculture and ecosystems are acutely sensitive to rainfall that spans the spring‐summer growing window, yet most studies still evaluate each season in isolation. Here we demonstrate that, since the 2000s, Central American precipitation anomalies in spring have become more likely to persist into summer‐a shift that single ...
Jinwen Weng   +6 more
wiley   +1 more source

On the definition of height reference surfaces over an arbitrary selected area by means of DFHRS approach

open access: yesGeodesy and Cartography, 2016
The aim of this study is to analyze the best fitting geoid model for an arbitrary selected area of investigation. The Digital Finite Element Height Reference Surface (DFHRS) method, developed by Hochschule Karlsruhe has been chosen to define the height ...
Perparim Ameti, Reiner Jager
doaj   +1 more source

Statistical Prediction of Seasonal Mean Southern Hemisphere 500-hPa Geopotential Heights

open access: yesJournal of Climate, 2007
Abstract A recently developed variance decomposition approach is applied to predict seasonal mean 500-hPa geopotential height anomalies in the Southern Hemisphere. In terms of predictability of both the winter and summer height fields, the Southern Oscillation and the Southern Annular Mode are identified as the first and second most ...
Xiaogu Zheng, Carsten S. Frederiksen
openaire   +1 more source

Differentiating Average and Extreme Extra‐Tropical Cyclones by Their Vertical Tilt and Potential Vorticity Structure

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract This study compares the vertical tilt and potential vorticity (PV) $(PV)$ structure of average and extreme extra‐tropical cyclones (ETCs) in the Northern Hemisphere during the cold season (October–March) in ERA5 reanalysis. Vertical tilt is quantified using a novel two‐component (directional and lateral, aligned with and across cyclone motion)
Daniel Köhler, Victoria A. Sinclair
wiley   +1 more source

The Relationship between Disturbance of the Polar Jet Stream and the Surface Low Pressure Intensity

open access: yesAl-Mustansiriyah Journal of Science, 2019
The work studied the relationship between polar jet stream and surface low pressure in April's months during years from 2014 to 2016 which the polar jet passes with high frequencies over the area of study.
hazim D. mohsin   +2 more
doaj   +1 more source

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