Results 71 to 80 of about 5,886 (223)

Assimilation of zenith total delays in the AROME France convective scale model: a recent assessment [PDF]

Tellus: Series A, Dynamic Meteorology and Oceanography, 2015
The impact of assimilating GPS zenith total delays (ZTD) in the convective scale model AROME is assessed over a 1-month period in summer 2013. The experimental set-up is similar to the current operational usage at Météo-France where the observing system ...
Jean-Francois Mahfouf, Furqan Ahmed, Patrick Moll, Felix N. Teferle   +3 more
doaj   +1 more source

On the Covariate-adjusted Estimation for an Overall Treatment Difference with Data from a Randomized Comparative Clinical Trial [PDF]

, 2011
To estimate an overall treatment difference with data from a randomized comparative clinical study, baseline covariates are often utilized to increase the estimation precision.
Cai, Tianxi, Tian, Lu, Wei, L. J., Zhao, Lihui   +3 more
core   +2 more sources

Variational Bias Correction of GNSS ZTD in the HARMONIE Modeling System

Journal of Applied Meteorology and Climatology, 2016
AbstractTo fill the gap in the observation system for humidity, the HIRLAM–ALADIN Research on Mesoscale Operational NWP in Euromed (HARMONIE) limited-area high-resolution kilometer-scale model has been prepared for assimilation of Global Navigation Satellite System (GNSS) zenith total delay (ZTD) observations. The observation-processing system includes
Sánchez Arriola, Jana, Lindskog, Magnus, Thorsteinsson, Sigurdur, Bojarova, Jelena   +3 more
openaire   +2 more sources

A Novel Robust High‐Precision Ionospheric Delay Modeling for PPP‐RTK Using Crowdsourced Data

Space Weather, Volume 24, Issue 2, February 2026.
Abstract The performance of PPP‐RTK is critically dependent on the quality of ionospheric corrections derived from a reference network. While the proliferation of mass‐market Global Navigation Satellite System (GNSS) devices offers a promising crowdsourcing opportunity to densify or replace this infrastructure, it introduces the formidable challenge of
Bo Wang, Jiaxi Zhu, Zhilu Wu, Dejin Zhang, Zhao Li, Minsi Ao, Shengfeng Gu   +6 more
wiley   +1 more source

Atmospheric Water Vapor and Precipitation Coupling in Southwestern South America

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Most studies linking atmospheric water vapor and precipitation emphasize short records, tropical regions, or the Northern Hemisphere. Long‐term variability of water vapor and its coupling with precipitation remain poorly understood across strong latitudinal and climatic gradients.
Raúl Valenzuela, Jorge Jara, Cristian Martinez‐Villalobos   +2 more
wiley   +1 more source

Satellite Geodesy Reveals Shallow, Transient Magma Intrusions at Sotará Volcano, Colombia

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Sotará is a little‐known andesitic‐dacitic stratovolcano in southwestern Colombia. Although there are no recorded historical eruptions, the volcano shows clear evidence of geothermal activity, deformation, and volcano‐tectonic seismicity. Its remote location and rugged terrain pose challenges for access and routine monitoring.
Rosa Alpala, Jorge Alpala, Patricia A. Rosell, Leonardo D. Euillades, Pablo A. Euillades, Maurizio Battaglia   +5 more
wiley   +1 more source

Prescription Opioid Misuse and the Perceived Likelihood of Future Suicidal Behavior: Considering the Role of Suicide Capability Dimensions

Suicide and Life-Threatening Behavior, Volume 55, Issue 6, December 2025.
ABSTRACT Introduction In the past two decades, suicide attempts and deaths involving prescription opioids have sharply increased. Research is needed to understand how prescription opioid misuse may increase suicide risk. Contemporary suicide theories suggest opioid use may increase suicide capability by increasing pain tolerance, altering fears related
Zachary T. DeMoss, Matthew T. Tull, Kim L. Gratz   +2 more
wiley   +1 more source

Effect of Loss on Multiplexed Single-Photon Sources

, 2015
An on-demand single-photon source is a key requirement for scaling many optical quantum technologies. A promising approach to realize an on-demand single-photon source is to multiplex an array of heralded single-photon sources using an active optical ...
Bonneau, Damien, Mendoza, Gabriel J., O'Brien, Jeremy L., Thompson, Mark G.   +3 more
core   +1 more source

Research on Applicability of GNSS PWV Data in Northeast China and Its Application in Intelligent Precipitation Prediction

Earth and Space Science, Volume 12, Issue 10, October 2025.
Abstract Atmospheric water vapor is an important factor in the formation and evolution of extreme weather events, such as heavy rainfall, typhoons, and major droughts and floods. We analyzed the applicability of precipitable water vapor (PWV) values from the Global Navigation Satellite System Meteorology (GNSS/MET) stations in northeastern China.
Yang Liu, Gen Wang, Tiening Zhang, Ping Wang, Bing Xu, Jinyi Xia   +5 more
wiley   +1 more source

Investigating tropospheric effects and seasonal position variations in GPS and DORIS time-series from the Nepal Himalaya [PDF]

, 2009
Geodetic time-series from continuous GPS (cGPS) and 1 DORIS stations across the Himalaya of central Nepal show strong seasonal fluctuations observed on the horizontal and vertical components.
Avouac, Jean-Philippe, Bettinelli, Pierre, Flouzat, Mireille, Gautam, Umesh, Héritier, Thierry, Willis, Pascal   +5 more
core   +3 more sources