搜索结果: 1-15 共查到“水文测量 precipitation”相关记录17条 . 查询时间(0.14 秒)
Potential of high-resolution detection and retrieval of precipitation fields from X-band spaceborne synthetic aperture radar over land
high-resolution detection retrieval precipitation fields X-band spaceborne synthetic
2011/3/15
X-band Synthetic Aperture Radars (X-SARs), able to image the Earth's surface at metric resolution, may provide a unique opportunity to measure rainfall over land with spatial resolution of about few ...
Relating surface backscatter response from TRMM precipitation radar to soil moisture:results over a semi-arid region
surface backscatter response TRMM precipitation radar soil moisture
2010/2/20
The Tropical Rainfall Measuring Mission (TRMM) carries aboard the Precipitation Radar (TRMMPR) that measures the backscatter (σ°) of the surface. σ° is sensitive to surface soil moisture and vegetatio...
A GIS methodology for the analysis of weather radar precipitation data
AGIS methodology analysis weather radar precipitation data
2009/12/4
A GIS multi-component module was developed within the ArcView GIS environment for processing and analysing weather radar precipitation data. The module is capable of: (a) reading geo-reference radar d...
The distribution of precipitation in time during storms constitutes a complex
stochastic process. Mathematical modelling of the process is quite difficult.
The process is conceived as a finite-durat...
PRECIPITATION MEASUREMENTS WITH VARIOUS PRECIPITATION GAUGE INSTALLATIONS
PRECIPITATION MEASUREMENTS PRECIPITATION GAUGE INSTALLATIONS
2009/10/29
An account is given of precipitation measurements taken with various precipitation
gauge installations at Ultuna, Sweden during 1957-1960. A new
gauge constructed to measure small spatial variations...
HOW MUCH PRECIPITATION GOES TO INFILTRATION DURING A STORM PERIOD?
PRECIPITATION GOES INFILTRATION STORM PERIOD
2009/10/29
Based on a detailed investigation of factors influencing infiltration in a
drainage basin, functional relationships amongst the abstractions during a
storm period, storm characteristics and conditio...
The effect of gauge height, exposure and screening on systematic errors in
rainfall estimation is investigated. Adhesion losses are found to be more than
2% of the annual precipitation, but for summ...
The normal-exposed Hellmann raingauge only catches about 85% of the true
precipitation on yearly basis. This is mainly due to aerodynamic effects. A
statistical model analysing the ratio of the dail...
Evaluation of a Precipitation Map Using a Smoothed Elevation-Precipitation Relationship and Optimal Estimates(Kriging)
Precipitation Map Smoothed Elevation-Precipitation Relationship Optimal Estimates
2009/10/28
Using 45 rain gauges, located in the center of French-speaking Switzerland
(approx. 1,600 sq. km), we evaluate an annual mean precipitation map for the
years 1974, 1975 and 1976. This estimate is ba...
Correction of Measured Precipitation in the Alps Using the Water Equivalent of New Snow
Measured Precipitation Alps Water Equivalent New Snow
2009/10/28
The Hellmann heated siphon pluviograph with wind shield shows 56 % less
winter precipitation than measured on a snow board at an altitude of 2,540 m
a.s.1. For the Swiss heated tipping bucket gauge ...
An Automatic Precipitation Gauge Based on Vibrating-Wire Strain Gauges
Automatic Precipitation Gauge Vibrating-Wire Strain Gauges
2009/10/27
The Norwegian Geotechnical Institute, NGI, has recently developed and
tested a new automatic precipitation gauge for rain and snow which can measure
accumulated precipitation with a resolution bette...
The paper discusses a bi-linear statistical model for correcting aerodynamic
errors, earlier presented by Allerup and Madsen, 1980. Further data from
Finland, USA and Australia testing the model wil...
Probable Maximum Precipitation (PMP) is an important parameter for estimation
of Probable Maximum Flood. This paper describes results of PMP estimation
by different methods, both meteorological and ...
Optical Precipitation Gauge-Determination of Precipitation Type and Intensity by Ligth Attenuation Technique-Paper presented at POLARTECH '94
Optical Precipitation Gauge-Determination Precipitation Type Ligth Attenuation Technique-Paper
2009/10/26
There exists a great need for automatic precipitation gauges for effective road
maintenance during the winter period. These gauges should be inexpensive,
not require mains supply, need little attend...
Estimating Regional Precipitation Trends Comparison of two Methods
Regional Precipitation Trends Comparison two Methods
2009/10/23
Two different methods werc applied to estimate long-term precipitation trends
representativ'e for regions in Norway. A new method, comparative trend analysis
(CTA), was applied on 142 homogeneous pr...