Results 81 to 90 of about 14,203 (319)
Algebraic Approaches to the geopotential Forecast and Nonlinear MHD Equations [PDF]
arXiv, 2008 In this paper, we use various anstazes motivated from our earlier works on transonic gas flows, boundary layer problems and Navier-Stokes equations to find new explicit exact solutions with multiple parameter functions for the equation of geopotential forecast and the equations of nonlinear magnetohydrodynamics.
arxiv
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 +6 more
wiley +1 more source
Weakening and Shifting of the Saharan Shallow Meridional Circulation During Wet Years of the West African Monsoon [PDF]
, 2016 The correlation between increased Sahel rainfall and reduced Saharan surface pressure is well established in observations and global climate models, and has been used to imply that increased Sahel rainfall is caused by a stronger shallow meridional circulation (SMC) over the Sahara.
arxiv +1 more source
Geopotential and geodynamic meters
Eos, Transactions American Geophysical Union, 1930 The work done in lifting a mass m, h units of length vertically, is given by the equationw = m g hprovided g, the local gravity‐acceleration, is constant over the distance in question. If g varies with height, and we know it does, then we must resort to integration and writew = m ∫ohg dhand express g as a function of h.
openaire +2 more sources
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 +6 more
wiley +1 more source
The ecological forecast limit revisited: Potential, absolute and relative system predictability
Methods in Ecology and Evolution, EarlyView.Abstract Ecological forecasts are model‐based statements about currently unknown ecosystem states in time or space. For a forecast to be useful to inform decision makers, model validation and verification determine adequacy. The measure of forecast goodness that can be translated into a limit up to which a forecast is acceptable is known as the ...
Marieke Wesselkamp +5 more
wiley +1 more source
NICAM–LETKF JAXA Research Analysis (NEXRA) Version 2.0
Geoscience Data Journal, Volume 12, Issue 3, July 2025.Time series of RMSD for 500‐hPa temperature (black solid line) and zonal wind (green solid line) relative to ERA5 data, along with the ensemble spread for 500‐hPa temperature (blue dotted line) and zonal wind (orange dotted line). ABSTRACT The NICAM–LETKF JAXA Research Analysis (NEXRA) version 2.0 has been released on the JAXA‐NEXRA Analysis website ...
Shuhei Matsugishi +9 more
wiley +1 more source
Bulletin of the National Research CentreClimate variability and atmospheric changes significantly affect weather patterns and human activities. Aerosols impact the Earth's climate by influencing cloud formation, scattering radiation, and cooling the planet. However, aerosols, like black carbon,
Onyinyechi Caroline Ibe +2 more
doaj +1 more source
Study of Some Patterns for Severe Rainfalls Over Iraq
Al-Mustansiriyah Journal of Science, 2020 Study of rain received particularly great importance in the areas described as semi-arid, which is on the other hand are not well prepared for the drainage of rain that may turned into flash floods.
Yaser Ali Shaghati
doaj +1 more source
Large Variations of the coefficient $J_2$ of geopotential, and the dynamical Love number $k_2^d$ from the analysis of laser ranging to LAGEOS~1 and LAGEOS~2 [PDF]
arXiv, 2011 Secular and seasonal variations of the coefficient $J_2$ of the geopotential are studied from the analysis of laser measurements of distances to the geodetic satellites LAGEOS~1 (1988--2003) and LAGEOS~2 (1992--2003). It is confirmed that beside the well-known annual variations with the amplitude $\approx 2.5 \times 10^{-10}$ there also exist very ...
arxiv