نتایج جستجو برای: rain events here

تعداد نتایج: 1047034  

2013
Ulf Melin Karin Axelsson

This article is © Emerald Group Publishing and permission has been granted for this version to appear here: Ulf Melin and Karin Axelsson, Inter-organizational interaction in public and private sectors – a comparative study, 2013, Transforming Government: People, Process and Policy, (7), 4, 431-452. http://dx.doi.org/10.1108/TG-07-2013-0018 Emerald does not grant permission for this article to b...

2005
Animesh Maitra Kaustav Chakravarty

Measurements of rain attenuation over an earth-space path at Kolkata (22°34' N, 88°29' E), India, have been carried out since June 2004 by receiving a Ku-band signal from the satellite NSS-6 (geostationary at 95 E). The instantaneous attenuations are estimated from the point rain rates measured with an optical raingauge and using the Simple Attenuation Model (SAM). The estimated values closely ...

2011
P. K. Karmakar

Brightness temperatures at 22.234, 23.834 and 30 GHz and corresponding rain rates were measured using a ground based radiometer and a fast response optical rain gauge co-located with the radiometer during the year 2009 at Cauchuria, Paulista (22.57 0 S, 89 0 W), Brazil. A statistical analysis reveals that the number of occurrences goes beyond 200 times for rain rate up to 15 mm/hr. It was obser...

2017
Adam Št'ovíček Ani Azatyan M. Ines M. Soares Osnat Gillor

Hot desert ecosystems experience rare and unpredictable rainfall events that resuscitate the arid flora and fauna. However, the effect of this sudden abundance of water on soil microbial communities is still under debate. We modeled varying rainfall amounts and temperatures in desert soil mesocosms and monitored the microbial community response over a period of 21 days. We studied two different...

2008
A. Barrera

Between the 11 and 13 October 2005 several flash floods were produced along the coast of Catalonia (NE Spain) due to a significant heavy rainfall event. Maximum rainfall achieved values up to 250 mm in 24 h. The total amount recorded during the event in some places was close to 350 mm. Barcelona city was also in the affected area where high rainfall intensities were registered, but just a few s...

2009
M. T. Hoffman P. J. Carrick L. Gillson A. G. West

Introduction More than 90% of South Africa is either arid or semi-arid and drought is a characteristic feature of the climate. Because drought has significant ecological and socio-economic impacts, investigations into its causes, consequences and mitigation have been regularly undertaken in South Africa over the last 100 years. Recent climate change scenarios suggest that there will be an incre...

2017
Salvatore Gabriele Francesco Chiaravalloti

The accurate evaluation of the precipitation’s time–spatial structure is a critical step for rainfall–runoff modelling. Particularly for small catchments, the variability of rainfall can lead to mismatched results. Large errors in flow evaluation may occur during convective storms, responsible for most of the flash floods in small catchments in the Mediterranean area. During such events, we may...

2005
Jiri PATERA J. Patera

New continuous group transforms, together with their discretization over a lattice of any density and admissible symmetry, are defined for a general compact simple Lie groups of rank 2 ≤ n < ∞. Rank 1 transforms are known. Rank 2 exposition of Cand S-transforms is in the literature. The E-transforms appear here for the first time.

2007
SCOTT CURTIS AHMED SALAHUDDIN ROBERT F. ADLER GEORGE J. HUFFMAN GUOJUN GU YANG HONG

Global monthly and daily precipitation extremes are examined in relation to the El Niño–Southern Oscillation phenomenon. For each month around the annual cycle and in each 2.5° grid block, extremes in the Global Precipitation Climatology Project dataset are defined as the top five (wet) and bottom five (dry) mean rain rates from 1979 to 2004. Over the tropical oceans El Niño–Southern Oscillatio...

2007
L. de Montera C. Mallet

The constant demand for increased capacity of communication channels has led the SATCOM industry to develop new satellite systems operating at frequencies above 20 GHz where large bandwidths are available (EHF band – Extremely High Frequencies). Nevertheless, attenuation effects of atmospheric gases, clouds and rain can reach significant levels at these frequencies and it is no longer cost-effe...

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