نتایج جستجو برای: weather data

تعداد نتایج: 2436397  

2008
K. W. Hoppel N. L. Baker L. Coy S. D. Eckermann J. P. McCormack D. E. Siskind

Assimilation of stratospheric and mesospheric temperatures from MLS and SABER into a global NWP model K. W. Hoppel, N. L. Baker, L. Coy, S. D. Eckermann, J. P. McCormack, G. E. Nedoluha, and D. E. Siskind Naval Research Laboratory, Washington, WA, USA Naval Research Laboratory, Monterey, CA, USA Received: 17 March 2008 – Accepted: 7 April 2008 – Published: 7 May 2008 Correspondence to: K. Hoppe...

Journal: :Softw., Pract. Exper. 1997
Anton Kruger Witold F. Krajewski

Weather radars produce large amounts of data and this has important implications for the archiving and analysis of data. The need for methods to deal with weather radar data sets will only increase as the United States National Weather Service (NWS) continues deployment of its 137 WSR-88D radars as part of the NEXRAD program. In this article we describe a compression and archiving strategy for ...

Journal: :Computers & Graphics 2002
Lilly Spirkovska Suresh K. Lodha

The two official sources for aviation weather reports both provide weather information to a pilot in a textual format. A number of systems have recently become available to help pilots with the visualization task by providing much of the data graphically. However, two types of aviation weather data are still not being presented graphically. These are airport-specific current weather reports (kn...

2007
J. P. Walker P. J. Steinle R.A.M. de Jeu

Soil moisture can significantly influence atmospheric evolution. However the soil moisture state predicted by land surface models, and subsequently used as the boundary condition in atmospheric models, is often unrealistic. New remote sensing technologies are able to observe surface soil moisture at the scales and coverage required by numerical weather prediction (NWP), and there is potential t...

2010
Dacian N. Daescu

The development of the adjoint of the forecast model and of the adjoint of the data assimilation system (adjointDAS) make feasible the evaluation of the derivative-based forecast sensitivity to DAS input parameters in numerical weather prediction (NWP). The adjoint estimation of the forecast sensitivity to the observation error covariance in the DAS is considered as a practical approach to prov...

2008
André B. Pereira Nilson A. Villa Nova Antonio R. Pereira

Meteorological elements directly influence crop potential productivity, regulating its transpiration, photosynthesis, and respiration processes in such a way as to control the growth and development of the plants throughout their physiological mechanisms at a given site. The interaction of the meteorological factors with crop responses is complex and has been the target of attention of many res...

Journal: :Science 2012
D James Baker

IN THE NEWS FOCUS STORY “WEATHER forecasts slowly clearing up” (9 November, p. 734), R. Kerr nicely summarizes how the growing improvement in prediction is coming from a focus on “more computer power, the assimilation of radar observations, and more physically realistic models.” He emphasizes that better assimilation of satellite data is a key element of improved forecasting. Unfortunately, the...

2007
Godfrey C. Onwubolu Petr Buryan Sitaram Garimella Visagaperuman Ramachandran Ajith Abraham

The rate at which organizations are acquiring data is exploding and managing such data so as to infer useful knowledge that can be put to use is increasingly becoming important. Data Mining (DM) is one such technology that is employed in inferring useful knowledge that can be put to use from a vast amount of data. This paper presents the data mining activity that was employed in weather data pr...

Journal: :CoRR 2012
Laetitia Adelard Harry Boyer F. Garde Jean Claude Gatina

Thermal buildings simulation softwares need meteorological files in thermal comfort, energetic evaluation studies. Few tools can make significant meteorological data available such as generated typical year, representative days, or artificial meteorological database. This paper deals about the presentation of a new software, RUNEOLE, used to provide weather data in buildings applications with a...

2017
Søren Thorndahl Thomas Einfalt Patrick Willems Jesper Ellerbæk Nielsen Marie-Claire ten Veldhuis Karsten Arnbjerg-Nielsen Michael R. Rasmussen Peter Molnar

Application of weather radar data in urban hydrological applications has evolved significantly during the past decade as an alternative to traditional rainfall observations with rain gauges. Advances in radar hardware, data processing, numerical models, and emerging fields within urban hydrology necessitate an updated review of the state of the art in such radar rainfall data and applications. ...

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