Results 81 to 90 of about 24,612 (296)

Estimating the geopotential value W0 of the local geoid based on data from local and global normal heights of GPS/leveling points in Vietnam

Geodesy and Cartography, 2013
Currently, the determination of geopotential value W0 of local geoid that best fits local mean sea level at the Zero Tide Gauge Station is getting important in building the National Geoid-Based Vertical System.
Ha Minh Hoa
doaj   +1 more source

An observational study of a circular gust front over the Yangtze Delta, China

Weather, EarlyView.
Concentric gust fronts are formed when a thunderstorm's downdraft reaches the ground and the outflow from the cold pool spreads uniformly outwards into the surrounding warm and humid air mass. Observational evidence presented here show the case of narrow‐band echoes forming a ring around a thunderstorm.
Wenjie Zhou, Wendong Hu, Jianhua Dai, Puyuan Du, Lu Lu, Yongkai Zhang, Yanqiong Hao   +6 more
wiley   +1 more source

Geopotential difference determination using optic-atomic clocks via coaxial cable time transfer technique and a synthetic test

Geodesy and Geodynamics, 2015
According to the general theory of relativity, two clocks placed at two different positions with different geopotentials run at different rates. Thus one can determine the geopotential difference between these two points by comparing the running rates of
Ziyu Shen, Wenbin Shen
doaj   +1 more source

The Bayesian sinking in Porticello: a predictable convective windstorm?

Weather, EarlyView.
The meteorological phenomenon that led to the Bayesian yacht sinking in Sicily at 0206 utc on 19 August 2024 is here investigated. A thunderstorm occurred during the sinking, but uncertainties exist regarding whether a waterspout or a downburst affected the ship. An in‐depth analysis of available observations highlighted that the ship was likely struck
Francesco De Martin, Mario Marcello Miglietta, Thomas Gastaldo, Michele Martinazzo, Federico Pavan, Matteo Siena, Silvana Di Sabatino   +6 more
wiley   +1 more source

Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia [PDF]

, 2003
The algorithm for orthometric height transfer using GPS has been widely presented. Its practical limitations are mostly due to datum bias inconsistencies and lack of precise geoid.
Mohamed, Azhari, Mohd. Omar, Kamaludin, Ses, Shahrum   +2 more
core  

Brazil climate highlights 2023

Annals of the New York Academy of Sciences, EarlyView.
Abstract In the year 2023, the Earth experienced the highest near‐surface temperature anomalies ever recorded until then. In addition, several extreme weather and climate events occurred around the world, including in Brazil. In this context, the primary objective of this study is to analyze the anomalous temperature and precipitation patterns observed
Luana Albertani Pampuch, Paola Gimenes Bueno, Michelle Simões Reboita, Ana Carolina Nóbile Tomaziello, Ana Maria Pereira Nunes, Andressa Andrade Cardoso, Caio A. S. Coelho, Camila Bertoletti Carpenedo, Francisco das Chagas Vasconcelos Jr, Helber Barros Gomes, Henri Rossi Pinheiro, Hugo Alves Braga, Iuri Valério Graciano Borges, Maria de Souza Custodio, Maria Leidinice da Silva, Marta Llopart, Rosmeri Porfírio da Rocha, Tércio Ambrizzi, Gyrlene Aparecida Mendes da Silva   +18 more
wiley   +1 more source

Increased Asian Aerosols Contribute to Historical Climate Change in Antarctica

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract Since the 1980s, anthropogenic aerosols (AAs) have decreased in North America and Europe, while they have continued to increase in East and South Asia. Meanwhile, climate change in Antarctica has exhibited a zonally asymmetric pattern. However, few studies have linked the two.
Chenxi Gu, Yiyong Luo, Fukai Liu, Jian Lu, Ziming Chen   +4 more
wiley   +1 more source

Stratosphere troposphere coupling: the influence of volcanic eruptions [PDF]

, 2011
Stratospheric sulfate aerosols produced by major volcanic eruptions modify the radiative and dynamical properties of the troposphere and stratosphere through their reflection of solar radiation and absorption of infrared radiation. At the Earth's surface,
Giorgetta, M., Gleixner, Stefanie, Graf, H., Karpechko, A., Krüger, Kirstin, Metzner, Doreen, Schmidt, Hauke, Stenchikov, G., Timmreck, C., Toohey, Matthew, Zanchettin, D.   +10 more
core  

Incorporating geostrophic wind information for improved space-time short-term wind speed forecasting [PDF]

, 2014
Accurate short-term wind speed forecasting is needed for the rapid development and efficient operation of wind energy resources. This is, however, a very challenging problem. Although on the large scale, the wind speed is related to atmospheric pressure,
Bowman, Kenneth P., Genton, Marc G., Zhu, Xinxin   +2 more
core   +3 more sources

Asymmetric ENSO Forcing on the South Pacific Meridional Mode

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract The South Pacific Meridional Mode (SPMM) influences El Niño‐Southern Oscillation (ENSO) variability, but whether ENSO triggers SPMM remains unclear. We show that ENSO can induce an in‐phase SPMM event via atmospheric teleconnections, beginning in early boreal summer of the ENSO‐developing year, with a negative asymmetry. Strong La Niña induces
Cheng Qi, Fan Jia
wiley   +1 more source