Inter-annual variability and trends of annual/seasonal precipitation totals in Ghana are analyzed considering different gridded observational (gaugeand/or satellite-based) and reanalysis products. A qualitycontrolled dataset formed by fourteen gauges from the Ghana Meteorological Agency (GMet) is used as reference for the period 1961-2010. Firstly, a good agreement is found between GMet and all...

1 Weather and Climate Models 2 JUDITH BERNER 3 National Center for Atmospheric Research, Boulder, Colorado 4 ULRICH ACHATZ 5 Institut für Atmosphäre und Umwelt, Goethe-Universität, Frankfurt am Main, Germany 6 LAURIANE BATTÉ 7 CNRM-GAME, Météo-France/CNRS, Toulouse, France 8 LISA BENGTSSON 9 Swedish Meteorological and Hydrological Institute, Norrköping, Sweden 10 ALVARO DE LA CÁMARA 11 National...

The characteristics of planetary wave energy propagation are being compared based on NCEP reanalysis data from 1958 to 2002 between boreal winters after strong volcanic eruptions, non-volcanic winters and episodes of strong polar vortex lasting at least 30 days. It shows that in the volcanically disturbed winters much more planetary wave energy is produced in the troposphere, passes through the...

Four synoptic regimes were identified as accompanying the widespread dust in central and eastern Saudi Arabia. The widespread cases of dust were classified based on the value and spread of the aerosol index data from the TOMS aerosol index (TOMS AI) satellite over the area of interest. The synoptic regimes of these dust cases were recognized using the Empirical Orthogonal Function (EOF) analysi...

The long-term variability in stratospheric ozone mass mixing ratio (O3) and temperature (T ) from 1979 to 2013 is investigated using the latest reanalysis product delivered by the European Centre for Medium-Range Weather Forecasts (ECMWF), i.e., ERA-Interim. Moreover, using the Mg II index time series for the same time period, the response of the stratosphere to the 11-year Schwabe solar cycle ...

Synoptic weather-typing, or the classification of weather conditions into categories, is a useful tool for climate impact applications. Numerous procedures have been developed to accomplish this goal. Before the advent of high-speed computers, manual methods were most common; more recently, more automated methods have come into wide use. Both types of classification have shortcomings; manual me...

You are welcome to quote this document so long as you include a link to it. And please check that your copy is up to date. That way, the reader will have access to any corrections. Currently, the link, which is not expected to change, Some of Riley's statistics are ambiguously reported in his paper. Since the author has ignored all requests for clarification, I had to use my best guess to resol...

Weather radar data quality control is extremely important for meteorological and hydrological applications. For weather radars, scatterers in the atmosphere are not only meteorological particles like cloud, rain drops, snowflakes, and hails, but also non-meteorological particles such as chaff, insects, and birds. For radar meteorologists it is a major issue and challenge to design numerical sch...

2014 Statistical properties of sequences of solar radiation data, and RC properties of buildings suggest that, the fraction of the thermal load covered by solar passive elements can be expressed by simple analytical functions, which asymptotic behaviour is determined by the physical properties of the system. We analyse the asymptotic properties of these functions. We, then, determine their expl...

This paper concerns the characterization of clouds on meteorological satellite image sequences through points trajectories. These temporal curves can be computed from the result of motion estimation over image sequences. The study includes a representation method for the trajectories, which is based on normalized Fourier modules. The original trajectories can be compared independently of their ...