نتایج جستجو برای: weather stations

تعداد نتایج: 73801  

2013
Manuel Keglevic Robert Sablatnig

Even before the use of computers, meteorological data was recorded for statistics by means of handwritten notes. In addition to those handwritten documents stored in historic archives, processes, as manually filling in measurement values into forms, still depend on pen and paper. However, manually digitizing this data for further processing is cumbersome. In this report, a character recognition...

2004
Aimamorn Suvichakorn

Satellite imagery can provide potential solution to the monitoring of large-scale systems e.g. supercell thunderstorms, depressions, cyclones, or mesoscale convective complex, particularly those in remote areas where there are sparse numbers of weather stations. The movement and patterns of clouds, observed from satellite images, can be used to indicate the instability of the weather [1]. Moreo...

2005
A. Orphanou S. Michaelides

A preliminary verification and evaluation is made of the forecast fields of the non-hydrostatic limited area model LME of the German Weather Service (DWD), for a recent three month period. For this purpose, observations from two synoptic stations in Cyprus are utilized. In addition, days with depressions over the area were selected in order to evaluate the model’s forecast skill in storm foreca...

2009
Nick Hodges Margaret Bell Fabio Galatioto Jeff Neasham Visalakshmi Suresh

Leicester’s ITS provides a rich source of data (from traffic detectors, monitored both in real-time and archived, Air Quality Monitoring Stations, weather stations and meteorological services) which is integrated in an Air Quality Modelling Systems framework. The MESSAGE Project’s ‘Grid enabled’ “e-Science” infrastructure demonstration shows how additional data from pervasive environmental sens...

2014
A. Devasthale L. Norin

Using measurements from the national network of 12 weather radar stations for the 11-year period 2000–2010, we investigate the large-scale spatio-temporal variability of precipitation over Sweden. These statistics provide useful information to evaluate regional climate models as well as for hydrology and energy applications. A strict quality control is applied to filter out noise and artifacts ...

2013
LYDIA STEFANOVA PHILIP SURA MELISSA GRIFFIN

In this paper the statistics of daily maximum and minimum surface air temperature at weather stations in the southeast United States are examined as a function of the El Niño–Southern Oscillation (ENSO) and Arctic Oscillation (AO) phase. A limited number of studies address how the ENSO and/or AO affect U.S. daily—as opposed to monthly or seasonal—temperature averages. The details of the effect ...

1998
S. P. Charles James P. Hughes Peter Guttorp Stephen P. Charles

A stochastic model for relating precipitation occurrences at multiple rain gauge stations to broad-scale atmospheric circulation patterns (the so-called \downscaling problem") is proposed. The model is an example of a nonhomogeneous hidden Markov model and generalizes existing downscaling models in the literature. The model assumes that atmospheric circulation can be classi ed into a small numb...

2007
L. Carvalheiro P. Correia Y. Yamasaki M. D. Manso

The 2.2 version of the Weather Research and Forecasting (WRF) model has been used to investigate the atmospheric behavior on extreme weather events, such as the passage of the Gordon extra-tropical depression over the Iberian Peninsula, on September 21st, 2006. The study of this particular event has been conducted using two nested domains, with 15 and 3 km resolution, respectively, and its resu...

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