搜索结果: 121-135 共查到“理学 Precipitation”相关记录296条 . 查询时间(0.125 秒)
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...
Relationships between Precipitation Chemistry,Hydrology,and Runoff Acidity
Relationships Precipitation Chemistry Hydrology Runoff Acidity
2009/10/28
High precipitation amounts of strongly varying ionic composition make the
western parts of southern Norway well-suited for studies of certain relationships
between precipitation chemistry, hydrology...
Runoff Chemistry at a Mini-Catchment Watered with Unpolluted Precipitation
Runoff Chemistry Mini-Catchment Unpolluted Precipitation
2009/10/28
600 mm of artificial, "unpolluted" precipitation with a chemical composition
of assumed preindustrial quality ((HC] = 9 peql-I. ISO,] = 11 peql-') was
sprayed on a "mini-catchment" (98 m2) over a pe...
Sodium Mobility in a Mini-Catchment Studied with Radioactive Tracers and Artificial Precipitation
Sodium Mobility Mini-Catchment Radioactive Tracers Artificial Precipitation
2009/10/28
Seasalts in the precipitation may lead to a short-term acidification of the
runoff from natural catchments due to ion-exchange reactions. It was decided
to investigate this effect in the Storgama ar...
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 ...
Difficulties in Deducing Temporal Changes in Precipitation Chemistry from Snow and Ice Cores:The Spatial Variability Problem
Temporal Changes Precipitation Chemistry Snow and Ice Cores Spatial Variability Problem
2009/10/26
Depth profiles of chemical impurities found in snow and ice have usually been
interpreted simply in terms of temporal changes in atmospheric concentrations
of the species of interest. Measurements o...
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...
Topographical Influence on Precipitation Distribution in Different Ranges of Western Himalayas
Topographical Influence Precipitation Distribution Western Himalayas
2009/10/26
Seasonal and annual distribution of rainfall and snowfall with elevation has been
studied for outer, middle and greater Himalayan ranges of Chenab basin in the
western Himalayas. Rainfall and snowfa...
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...
A Comprehensive Model for Correcting Point Precipitation
Comprehensive Model Point Precipitation
2009/10/23
Wind induced errors in precipitation measurements result in systematic deficits, which are particularly large when the precipitation falls as snow combined with high wind speed. The actual magnitude o...
Wind-induced Precipitation Undercatch of the Hellmann Gauges
Wind-induced Precipitation Hellmann Gauges
2009/10/23
The Hellmann gauges have been widely used as the official precipitation measurement
instruments in 30 countries. From 1986 to 1993, the accuracy and performance
of the Hellmann gauges were evaluated...
Areal Precipitation and Temperature in the Swedish Mountains
Areal Precipitation Temperature Swedish Mountains
2009/10/23
This paper presents an evaluation of three different methods for estimation of
areal precipitation and temperature, with special emphasis on their applicability
for runoff modelling in the Swedish m...