搜索结果: 1-13 共查到“环境科学技术 variability”相关记录13条 . 查询时间(0.092 秒)
The Use of Greenhouse Gases as Climate Proxy Data in Interpreting Climatic Variability
Greenhouse Gases Proxy Data Global Warming
2013/2/27
Greenhouse gas data were utilized as proxy data in interpreting climate variability. These greenhouse gases were related to temperature records using standard deviation (SD) as the transfer function b...
Interannual Variability of Energy Flux in Atmospheric Instability Conditions at Pantanal of Mato Grosso-Brazil
Latent Heat Sensible Heat Energy Partition Wetlands
2013/2/27
The energy balance partitions in wetlands have gained notoriety due to the dynamics and importance of these areas for regional and local climate. Thus, the study was conducted about seasonal and inter...
Dynamical Outlines of the Rainfall Variability and the ITCZ Role over the West Sahel
Climate Variability Trend Analysis Empirical SPI BEST Index PDO Index
2013/2/26
This article evaluated the plausible causes of floods and droughts, the relative roles of large-scale climate variability in regional environmental trends, and the prospects for the future of the semi...
Variability of Wintertime Surface Air Temperature over the Kingdom of Saudi Arabia
Winter Temperature Saudi Arabia Coefficient of Variability Trends Cumulative Annual Mean
2013/2/26
Variability of wintertime surface air temperature (SAT) in the Kingdom of Saudi Arabia (KSA) is studied. The study is based on time series over thirty one years in length (1978-2008). For the analysis...
Variability in Road Runoff Pollution by Polycyclic Aromatic Hydrocarbons (PAHs) in the Urbanized Area Adjacent to Biscayne Bay, Florida
PAHs Storm-Event Mass First Flush Seasonal Variability Annual Average Daily Traffic
2013/3/13
Polycyclic aromatic hydrocarbons (PAHs) were consistently documented in the sediments of the canals draining into Biscayne Bay. The study examines the contribution of urban runoff to PAHs discharges. ...
Indoor and Outdoor Particle Number and Mass Concentrations in Athens. Sources, Sinks and Variability of Aerosol Parameters
PM10/PM2 Particle number size distribution Black carbon Residential microenvironment Indoor/outdoor sources
2016/3/28
The scope of this work was to characterize PM mass and number concentration at typical residential microenvironments
in the centre of Athens and to examine the relative contribution of the indoor and...
Understanding the Variability of Z-R Relationships Caused by Natural Variations in Raindrop Size Distributions (DSD): Implication of Drop Size and Number
Raindrop Size Distribution Radar Reflectivity Factor
2013/2/26
In the issue of rainfall estimation by radar through the necessary relationship between radar reflectivity Z and rain rate R (Z-R), the main limitation is attributed to the variability of this relatio...
Urban-scale Spatial-temporal Variability of Black Carbon and Winter Residential Wood Combustion Particles
Spatial-temporal variability Black carbon (BC) Delta-C Residential wood combustion (RWC)
2016/3/28
It has been suggested that certain organic aerosol components of wood smoke have enhanced ultraviolet absorption at
370 nm relative to 880 nm in two-wavelength aethalometer black carbon (BC) measurem...
Analysis of Monthly, Seasonal and Annual Air Temperature Variability and Trends in Taiz City - Republic of Yemen
Air Temperature Climate Change Republic of Yemen Taiz City Mann–Kendall Test Trends
2013/3/13
Climate change is one of the most important issues of today’s World. Climate scientists have concluded that the earth’s surface air temperature warmed by 0.6 ± 0.2℃ during the 20th century, accompanie...
Na/Ca variability in coral skeletons
coral skeleton Na/Ca ratio Mg/Ca ratio Sr/Ca ratio S/Ca ratio marine aragonite
2017/8/9
In aragonitic coral skeletons, the Na/Ca molar ratio is clearly higher than any other minor- or trace-element/Ca molar ratio (i.e., Na/Ca > Sr/Ca ≥ S/Ca ≥ F/Ca ≈ Mg/Ca). However, little attention has ...
Spectral Analysis of Solar Variability and their Possible Role on the Global Warming
Global Rurface Temperature Geomagnetic Indices Solar Variability
2013/3/13
Our understanding of the indirect effect of changes in solar output and feedbacks in the climate system is minimal. There is much need to refine our understanding of key natural forcing mechanisms of ...
Diurnal and Seasonal Air Ion Variability at Rural Station Ramanandnagar (17°2N, 74°E), India
Gerdien condenser Transpiration Vegetation Temperature inversion Radio-active aerosol
2016/3/29
High-energy radiations, such as alpha and beta particles or gamma radiation, ionize air molecules into pairs of positive
ions and free electrons. The diurnal and seasonal variations of these air ions...
Determination of Spatial Variability of Monthly Rainfall in the Eastern Mediterranean Region Using Geostatistical Techniques
Geostatistics Monthly Rainfall Semivariogram Parameters Kriging Areal Rainfall
2009/10/14
The aim of this study was to determine the spatial variability of monthly rainfall and generate monthly point and areal rainfall series for the Eastern Mediterranean Region using geostatistical method...