Past evolution of western Europe large-scale circulation and link to precipitation trend in the northern French Alps [PDF]
Detecting trends in regional large-scale circulation (LSC) is an important challenge as LSC is a key driver of local weather conditions. In this work, we investigate the past evolution of western Europe LSC based on the 500 hPa geopotential height fields
A. Blanc, J. Blanchet, J.-D. Creutin
doaj +1 more source
Teleconnections in the Geopotential Height Field during the Northern Hemisphere Winter
Contemporaneous correlations between geopotential heights on a given pressure surface at widely separated points on earth, referred to as teleconnections in this paper, are studied in an attempt to identify and document recurrent spatial patterns which ...
J. Wallace, D. Gutzler
semanticscholar +1 more source
A large decrease in total ozone of up to more than 4 DU/yr occurred over Europe during January 1979-1992. This value is almost twice that of the zonal mean.
D. Peters, G. Entzian
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The aim of this paper is to develop two concepts regarding phosphorus that will serve as a contribution fulfilling the call for intergenerational equity: to improve knowledge of future resources and to develop a framework by setting priorities for ...
Friedrich-W. Wellmer, Roland W. Scholz
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Eigen Microstates and Their Evolution of Global Ozone at Different Geopotential Heights [PDF]
Studies on stratospheric ozone have attracted much attention due to its serious impacts on climate changes and its important role as a tracer of Earth's global circulation. Tropospheric ozone as a main atmospheric pollutant damages human health as well as the growth of vegetation.
arxiv +1 more source
Group foliations, invariant solutions, and conservation laws of the geopotential forecast equation [PDF]
Despite the large number of publications on symmetry analysis of the geopotential forecast equation, its group foliations laws have not been considered previously. The present publication aims to address this shortcoming. First, group foliations are constructed for the equation, and based on them, invariant solutions are derived, some of which ...
arxiv +1 more source
Determination of geopotential difference by hydrogen masers based on precise point positioning time-frequency transfer [PDF]
According to the general relativity theory, the geopotential difference can be determined by gravity frequency shift between two clocks. Here we report on the experiments to determine the geopotential difference between two remote sites by hydrogen masers based on precise point positioning time-frequency transfer technique.
arxiv
Development of an idealised downstream cyclone: Eulerian and Lagrangian perspective on the kinetic energy [PDF]
In this idealised modelling study, the development of a downstream cyclone, which closely follows the life-cycle of a Shapiro-Keyser cyclone, is addressed from a quasi-geostrophic kinetic energy perspective.
Lukas Papritz, Sebastian Schemm
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The permanent tide and the International Height Reference Frame IHRF [PDF]
The International Height Reference System (IHRS) adopted by the IAG in 2015 contains two novelties. First, the mean-tide system is adopted for handling the permanent tide. Second, the reference level of height system is defined by the equipotential surface where the geopotential has a conventional value W0=62636853.4 m2s-2.
arxiv +1 more source
The topographic bias in gravimetric geoid determination revisited
The topographic potential bias at geoid level is the error of the analytically continued geopotential from or above the Earth’s surface to the geoid.
Sjöberg Lars E.
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