Results 61 to 70 of about 24,612 (296)
A Synoptic Analysis of Cyclonic Activity During 1961-2003 [PDF]
مخاطرات محیط طبیعی, 2012 Mid-latitude cyclones play an important role in precipitation over Iran. A survey on 6-hourly geopotential height of 1000 hPa level showed that the number of cyclones in the studied area reveals a positive trend.
Seyyed Abolfazl Masoodian
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On the comparison between two sets of 500 mb geopotential height eigenfunctions [PDF]
Tellus A, 1986 When the largest eigenvalues of an Empirical Orthogonal Function (EOF) analysis are of similar magnitude, the corresponding EOFs do not hold great interest when they are considered one at a time; only the vector subspace generated by the first EOFs is significant.
openaire +3 more sources
PERFORMANCE ANALYSIS OF GEOPOTENTIAL MODELS IN ESTIMATING THE GEOIDAL HEIGHT OVER IRAN
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 Abstract. Global geopotential models (GGMs) are widely used in earth sciences, especially in geodesy and geophysics. In this paper, we aim at studying GGMs' capability in the geoidal height estimation at the geographical region of Iran. This will include verification of both satellite-only and combined GGMs.
M. Mosayebzadeh +2 more
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Unbiased calculation, evaluation, and calibration of ensemble forecast anomalies
Quarterly Journal of the Royal Meteorological Society, EarlyView.Standard methods for calculating ensemble forecast anomalies result in statistical inconsistencies between forecast and verification anomalies, even if the underlying forecasts are perfectly reliable. An unbiased evaluation of anomaly‐based ensemble forecasts must account for differences in climatological sampling uncertainty between forecasts and ...
Christopher D. Roberts +1 more
wiley +1 more source
Satellite techniques for determining the geopotential for sea-surface elevations [PDF]
, 1984 Spaceborne altimetry with measurement accuracies of a few centimeters which has the potential to determine sea surface elevations necessary to compute accurate three-dimensonal geostrophic currents from traditional hydrographic observation is discussed ...
Pisacane, V. L.
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Frontiers in Earth Science, 2021 Summer precipitation in East Asia has significant quasi-biweekly (10–30-day) oscillation characteristics. By using gauge-based precipitation and ERA-Interim reanalysis data, the basic mode of the quasi-biweekly oscillation of summer precipitation in East
Qian Huang, Xinyu Yin, Suxiang Yao
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Quarterly Journal of the Royal Meteorological Society, EarlyView.An original method is applied to identify distinct periods of observed NAO spatial patterns, evaluating the ability of state‐of‐the‐art climate models to reproduce them. Their poor representation of this multidecadal variability increases uncertainty in winter precipitation projections for Europe and likely broad regions of the Northern Hemisphere ...
A. Halifa‐Marín +6 more
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How tropical Pacific surface cooling contributed to accelerated sea ice melt from 2007 to 2012 as ice is thinned by anthropogenic forcing [PDF]
, 2019 Over the past 40 years the Arctic sea ice minimum in September has declined. The period between 2007 and 2012 showed accelerated melt contributed to the record minima of 2007 and 2012.
Baxter, Ian
core
Impacts of the Madden-Julian oscillation on Australian rainfall and circulation [PDF]
, 2009 Impacts of the Madden¿Julian oscillation (MJO) on Australian rainfall and circulation are examined during all four seasons. The authors examine circulation anomalies and a number of different rainfall metrics, each composited contemporaneously for eight ...
Cleland, S. +4 more
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Atmosphere, 2023 Following Lorenz’s work using analogue pairs for establishing 10-to-14-day predictability limits for synoptic weather regimes, predictability limits for the Rex block, the long-wave wintertime ridge over the eastern Pacific Ocean and the western United ...
Marshall Liddle +2 more
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