搜索结果: 61-75 共查到“理学 anthropogenic”相关记录75条 . 查询时间(0.046 秒)
The influence of natural and anthropogenic secondary sources on the glyoxal global distribution
anthropogenic secondary sources glyoxal
2008/11/17
Glyoxal, the smallest dicarbonyl, which has recently been observed from space, is expected to provide indications on volatile organic compounds (VOC) oxidation and secondary aerosol formation in the t...
Local anthropogenic impact on particulate elemental carbon concentrations at Summit, Greenland
particulate elemental carbon concentration Summit Greenland
2008/11/6
Summit, Greenland is a remote Arctic research station allowing for field measurements at the highest point of the Greenland Ice Sheet. Due to the current reliance on diesel generators for electricity ...
Global anthropogenic aerosol effects on convective clouds in ECHAM5-HAM
anthropogenic convective clouds ECHAM5-HAM
2008/11/4
Aerosols affect the climate system by changing cloud characteristics in many ways. They act as cloud condensation and ice nuclei and may have an influence on the hydrological cycle. Here we investigat...
Weekly periodicities of Aerosol Optical Thickness over Central Europe – evidence of an anthropogenic direct aerosol effect
periodicities aerosol optical thickness over central Europe – evidence of an anthropogenic direct aerosol effect
2008/10/24
Statistical analyses of data from ground-based sun photometer stations in Central Europe are presented. All stations are part of the Aerosol Robotic Network (AERONET), and only data of the highest dat...
Research Advances in Impacts of Natural Climate Variability and Anthropogenic Climate Change on Streamflow
natural climate variability anthropogenic climate change streamflow IPCC assessment report
2010/2/21
Based on the review of the successive four assessment reports of the IPCC WGII on climate change impacts on streamflow from 1990 to 2007, it is summarized that the first (FAR) and second (SAR) assessm...
Impacts of anthropogenic and environmental factors on the occurrence of shallow landslides in an alpine catchment (Urseren Valley, Switzerland)
anthropogenic and environmental factors shallow landslides an alpine catchment
2009/12/30
In this study, we explicitly consider the influence of dynamic human-induced changes on the occurrence of landslides in addition to natural factors. Our hypothesis was that if changes in land use and ...
Rainfall-triggered landslides,anthropogenic hazards,and mitigation strategies
Rainfall-triggered landslides anthropogenic hazards mitigation strategies
2010/1/27
Rainfall-triggered landslides are part of a natural process of hillslope erosion that can result in catastrophic loss of life and extensive property damage in mountainous, densely populated areas. As ...
Soil erosion assessment and prediction play critical roles in addressing problems associated with erosion control or soil conservation. The past dynamics of soil erosion can provide valuab...
Methane hydrate stability and anthropogenic climate change
Methane hydrate stability anthropogenic climate change
2010/1/14
Methane frozen into hydrate makes up a large reservoir of potentially volatile carbon below the sea floor and associated with permafrost soils. This reservoir intuitively seems precarious, because hyd...
Flood risk mitigation and anthropogenic modifications of a coastal plain in southern Italy:combined effects over the past 150 years
Flood risk mitigation anthropogenic modifications coastal plain southern Italy
2009/12/30
A study of the effects of human modification of a coastal plain mainly involving land reclamation and flood protection is proposed. The approach involves historical, geomorphological and hydrological ...
Comprehensive trend analysis of nutrients and related variables in a large eutrophic estuary: A decadal study of anthropogenic and climatic influences
Comprehensive trend analysis related variables
2014/4/30
We used a decadal data set, with weekly to biweekly sampling in April–October and monthly sampling in November–
March, to characterize climatic (hurricane-level storms, a sustained 3-yr drought) and ...
Anthropogenic and climatic influences on the eutrophication of large estuarine ecosystems
Anthropogenic climatic infl uences
2014/4/30
We examined the effects of anthropogenic and climatic perturbations on nutrient–phytoplankton interactions and
eutrophication in the waters of the largest estuarine systems in the U.S.A., the Chesape...
Analysis of the potential contamination risk of groundwater resources circulating in areas with anthropogenic activities
potential contamination risk groundwater resources anthropogenic activities
2009/12/25
The area investigated is located in the province of Brindisi (Italy). It is a generally flat area separated from the nearby carbonatic plateau of the Murgia by quite indistinct and high fault scarps. ...
Bioavailability of DON from natural and anthropogenic sources to estuarine plankton
Bioavailability of DON from natural anthropogenic sources estuarine plankton
2014/5/26
Utilization of dissolved organic nitrogen (DON) from natural (forests) and anthropogenic (animal pastures, urban/suburban storm water runoff) sources (three sites per source) by estuarine plankton com...
Redfield ratios revisited: Removing the biasing effect of anthropogenic CO2
Redfield ratios revisited Removing the biasing anthropogenic CO2
2014/6/9
Redfield ratios of remineralization are calculated based on chemical data analysis on isopycnal surfaces. The concentrations of dissolved inorganic carbon used in this study were corrected for the ant...