نتایج جستجو برای: atmospheric moisture

تعداد نتایج: 114665  

Journal: :محیط شناسی 0
الناز نوروزی اقدم سید محمودرضا بهبهانی علی رحیمی خوب حسین عقیقی

soil moisture is one of the critical parameters in climatic, ecological and hydrological modeling and vegetation growth. soil moisture is important for environmental studies but due to ground-based point measurement of soil moisture is expensive and impractical for watershed measurement, this parameter is not be used widely to simulate and predict models. overall and uniform view on different p...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
B D Santer C Mears F J Wentz K E Taylor P J Gleckler T M L Wigley T P Barnett J S Boyle W Brüggemann N P Gillett S A Klein G A Meehl T Nozawa D W Pierce P A Stott W M Washington M F Wehner

Data from the satellite-based Special Sensor Microwave Imager (SSM/I) show that the total atmospheric moisture content over oceans has increased by 0.41 kg/m(2) per decade since 1988. Results from current climate models indicate that water vapor increases of this magnitude cannot be explained by climate noise alone. In a formal detection and attribution analysis using the pooled results from 22...

2011
R. J. van der Ent H. H. G. Savenije

It is difficult to quantify the degree to which terrestrial evaporation supports the occurrence of precipitation within a certain study region (i.e. regional moisture recycling) due to the scaleand shape-dependence of regional moisture recycling ratios. In this paper we present a novel approach to quantify the spatial and temporal scale of moisture recycling, independent of the size and shape o...

2008
RYAN L. FOGT DAVID H. BROMWICH

Antarctic Mesoscale Prediction System (AMPS) forecasts of atmospheric moisture and cloud fraction (CF) are compared with observations at McMurdo and Amundsen–Scott South Pole station (hereafter, South Pole station) in Antarctica. Overall, it is found that the model produces excessive moisture at both sites in the midto upper troposphere because of a weaker vertical decrease of moisture in AMPS ...

2005
Y. A. Mohamed B. J. J. M. van den Hurk H. H. G. Savenije W. G. M. Bastiaanssen

This paper presents the result of the regional coupled climatic and hydrologic model of the Nile Basin. For the first time the interaction between the climatic processes and the hydrological processes on the land surface have been fully coupled. The hydrological model is driven by the rainfall and the energy available for evaporation generated in the climate model, and the runoff generated in t...

1998
Tatiana G. Smirnova John M. Brown Stanley G. Benjamin

A coupled atmospheric/land-surface model covering the conterminous United States with an associated 1-hour atmospheric data assimilation cycle, the Mesoscale Analysis and Prediction System (MAPS), has been improved to include snow and frozen soil physics. The new aspects of the land-surface model are described in this paper, along with detailed one-dimensional (1-D) tests. These tests show that...

Journal: :Proceedings of the National Academy of Sciences 2007

2007
Maik KOCH Markus FISCHER Stefan TENBOHLEN

The breakdown voltage of mineral insulation oil was systematically investigated under the influences of moisture, acidity, pressure and particles. The standards IEC156/95 (VDE0370/Part5/96 and ASTM D1816) specified the test conditions. Moisture provides charge carriers, therefore a moisture saturation of 0 to 20 % decreases the breakdown voltage from 72 down to 61 kV. Acids as aging products de...

2008
Sean Swenson James Famiglietti Jeffrey Basara John Wahr

[1] In this study we estimate a time series of regional groundwater anomalies by combining terrestrial water storage estimates from the Gravity Recovery and Climate Experiment (GRACE) satellite mission with in situ soil moisture observations from the Oklahoma Mesonet. Using supplementary data from the Department of Energy’s Atmospheric Radiation Measurement (DOE ARM) network, we develop an empi...

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