搜索结果: 1-12 共查到“水文学 emission”相关记录12条 . 查询时间(0.091 秒)
Nitrous oxide emission from riparian buffers in agricultural landscapes of Indiana
Nitrous oxide riparian agriculture denitrification
2015/1/16
Riparian buffers have well documented capacity to remove nitrate (NO3-) from runoff and subsurface flow paths, but information on field-scale N2O emission from these buffers is lacking. This study mon...
SNOW-WATER EQUIVALENT MEASUREMENT USING NATURAL GAMMA EMISSION
SNOW-WATER EQUIVALENT MEASUREMENT NATURAL GAMMA EMISSION
2009/10/29
The natural gamma radiation emitted by potassium, uranium and thorium
is attcnuated by snow. This attenuation depends on the water-equivalent
of the snow layer. Air absorption coefficients were dete...
Measurement and Modeling of Microwave Emission from Forested Snowfields in Michigan
Measurement Modeling of Microwave Emission Forested Snowfields
2009/10/28
Forest cover was found to confuse the normally inverse relationship between
microwave brightness temperature (TrJ) and snow depth in dry snowpacks in
the lower peninsula of Michigan during February ...
The comparison of two models that determine the effects of a vegetation canopy on passive microwave emission
passive microwave emission vegetation canopy microwave brightness temperature
2009/5/26
Two contrasting models are used to account for the effects of vegetation on microwave emission from the soil. These are: a simple model which requires two empirically derived parameters as input data ...
Modelling the impacts of European emission and climate change scenarios on acid-sensitive catchments in Finland
climate change acid-sensitive catchments Finland
2009/4/29
The dynamic hydro-chemical Model of Acidification of Groundwater in Catchments (MAGIC) was used to predict the response of 163 Finnish lake catchments to future acidic deposition and climatic change s...
The impacts of future climate change and sulphur emission reductions on acidification recovery at Plastic Lake, Ontario
climate change Plastic Lake sulphur emission
2009/4/29
Climate-induced drought events have a significant influence on sulphate export from forested catchments in central Ontario, subsequently delaying the recovery of surface waters from acidification. In ...
Application of a coupled microwave, energy and water transfer model to relate passive microwave emission from bare soils to near-surface water content and evaporation
microwave emission near-surface water
2009/3/25
The paper examines the stability of the relation between microwave emission from the soil and the average near-surface water content in the case of relatively smooth, bare soils, and then considers th...
Nitrous oxide emission from a range of land uses across Europe
nitrous oxide soil water content inorganic N soil temperature
2009/3/17
The results of a literature study examining quantitative estimates of N2O emission rates are presented for a range of land-uses across Europe. The analysis shows that the highest N2O emission rates ar...
Application of a plane-stratified emission model to predict the effects of vegetation in passive microwave radiometry
passive microwave soil moisture vegetation
2009/3/17
This paper reports the application to vegetation canopies of a coherent model for the propagation of electromagnetic radiation through a stratified medium. The resulting multi-layer vegetation model i...
Assessing emission reduction targets with dynamic models: deriving target load functions for use in integrated assessment
emission reduction critical load target load
2009/3/12
International agreements to reduce the emission of acidifying sulphur (S) and nitrogen (N) compounds have been negotiated on the basis of an understanding of the link between acidification related cha...
Probable changes in lake chemistry in Canada’s Atlantic Provinces under proposed North American emission reductions
Atlantic Canada monitoring networks acidification predictions MAGIC
2009/3/12
Atlantic Canada, located in the extreme north-eastern portion of North America, receives acid precipitation from all major acid emission sources on the eastern part of the continent. The region was gl...
Modelling the recovery of acid-sensitive Finnish headwater lakes under present emission reduction agreements
acidification lake catchment recovery SMART model Finland
2009/3/12
Over the past two decades, substantial reductions in the deposition of acidifying substances (primarily sulphur) have occurred in most parts of Europe and, following recent agreements, this trend is l...