搜索结果: 1-15 共查到“大气科学 N - P - K levels”相关记录24条 . 查询时间(0.093 秒)
The melting of polar ice is not only shifting the levels of our oceans, it is changing the planet Earth itself. Newly minted Ph.D. Sophie Coulson and her colleagues explained in a recent paper in Geop...
Carbon dioxide levels are rising across wide swaths of the Arctic Ocean's Canada Basin（图）
Carbon dioxide levels rising across wide swaths Arctic Ocean Canada Basin
2020/7/10
Melting of Arctic ice caused by climate change has exposed more sea surface to the atmosphere. Scientists have long suspected this trend would increase carbon dioxide in Arctic Ocean waters.Now U...
Icy air reveals human-made methane levels higher than previously believed（图）
icy air human-made methane levels higher previously believed
2017/9/5
In 2011 a team of researchers led by Vasilii Petrenko, an assistant professor of Earth and environmental sciences at the University of Rochester, spent seven weeks in Antarctica collecting and studyin...
‘The blob’ of abnormal conditions boosted Western U.S. ozone levels
The blob Western U.S. ozone levels
2017/3/13
An unusually warm patch of seawater off the West Coast in late 2014 and 2015, nicknamed “the blob,” was part of an offshore pattern that had cascading effects up and down the coast. Its sphere of infl...
Variations in atmospheric oxygen levels shaped Earth’s climate through the ages
oxygen levels Earth’s climate
2015/6/18
Variations in the amount of oxygen in Earth's atmosphere significantly altered global climate throughout the planet's history. Efforts to reconstruct past climates must include this previously overloo...
Impact of Nitrogen Oxides, Volatile Organic Compounds and Black Carbon on Atmospheric Ozone Levels at a Semi Arid Urban Site in Hyderabad
Trace gas Ozone Volatile organic compounds Black carbon Meteorology and oxides of nitrogen.
2016/3/25
The surface level ozone (O3), nitrogen oxides (NOx = NO2 + NO), volatile organic compounds (VOCs), black carbon (BC)
and meteorological parameters were continuously monitored for the period of one ye...
Temporal Variations in Airborne Particulate Matter Levels at an Indoor Bus Terminal and Exposure Implications for Terminal Workers
PM10 PM2.5 Ultrafine particle Bus terminal Station ticket inspector Exposure level
2016/3/28
This study investigates temporal variations in PM levels in Taipei bus terminal and assesses exposure levels for bus
terminal workers. Measurement results show that temporal variations in PM levels i...
Source identification and budget analysis on elevated levels of formaldehyde within the ship plumes: a ship-plume photochemical/dynamic model analysis
Source identification budget analysis the ship plumes a ship-plume photochemical/dynamic model analysis
2010/12/28
Elevated levels of formaldehyde (HCHO) along the ship corridors have been observed by satellite sensors, such as ESA/ERS-2 GOME (Global Ozone Monitoring Experiment), and were also simulated by global ...
Baseline levels and trends of ground level ozone in Canada and the United States
Baseline levels and trends ground level ozone Canada the United States
2010/9/21
A statistical method was developed to extract baseline levels of ground level ozone in Canada and the US, and to quantify the temporal changes of baseline ozone levels on annual, seasonal, diurnal and...
Modeling the regional impact of ship emissions on NOx and ozone levels over the Eastern Atlantic and Western Europe using ship plume parameterization
ship emissions NOx ozone levels the Eastern Atlantic Western Europe ship plume parameterization
2010/8/16
In general, regional and global chemistry transport models apply instantaneous mixing of emissions into the model's finest resolved scale. In case of a concentrated source, this could result in errone...
Influences of Traffic Emissions and Meteorological Conditions on Ambient PM10 and PM2.5 Levels at a Highway Toll Station
PM10 PM2.5 Traffic emission Meteorological condition Highway toll station
2016/3/29
The PM10 and PM2.5 levels at a highway toll station were monitored from October to December 2008. Experimental results
show that hourly average PM10 and PM2.5 levels at the highway toll station were ...
High levels of reactive gaseous mercury observed at a high elevation research laboratory in the Rocky Mountains
reactive gaseous mercury high elevation research laboratory Rocky Mountains
2009/11/9
The chemical cycling and spatiotemporal distribution of mercury in the troposphere is poorly understood. We measured gaseous elemental mercury (GEM), reactive gaseous mercury (RGM) and particulate mer...
The impact of weather and atmospheric circulation on O3 and PM10 levels at a rural mid-latitude site
weather and atmospheric circulation O3 PM10 levels rural mid-latitude site
2009/5/6
In spite of the strict EU regulations, concentrations of surface ozone and PM10 often exceed the pollution standards for the Netherlands and Europe. Their concentrations are controlled by (precursor) ...
On extreme atmospheric and marine nitrogen fluxes and chlorophyll-a levels in the Kattegat Strait
extreme atmospheric and marine nitrogen fluxes chlorophyll-a levels Kattegat Strait
2009/3/10
A retrospective analysis is carried out to investigate the importance of the vertical fluxes of nitrogen to the marine sea surface layer in which high chlorophyll a levels may cause blooms of harmful ...
The effect of varying levels of surfactant on the reactive uptake of N2O5 to aqueous aerosol
effect of varying levels surfactant reactive uptake N2O5 aqueous aerosol
2009/1/7
Recent observations have detected surface active organics in atmospheric aerosols. We have studied the reaction of N2O5 on aqueous natural seawater and NaCl aerosols as a function of sodium dodecyl su...