Sentences with phrase «average concentrations of»

8 Major Greenhouse Gases Increases in average concentrations of three greenhouse gases in the troposphere between 1860 and 2004, mostly due to fossil fuel burning, deforestation, and agriculture.

Not surprisingly, highly populated regions such as the Los Angeles, Riverside and Houston areas, where the climate is sunny for much of the year and the air mass is relatively stable, had the highest average concentrations of ozone, ranging from 62.5 to 104 ppb.

The heuristic forecast submitted by Howell in June is unchanged; below average concentrations of multi-year ice in the area will facilitate clearing.

According to the US National Oceanic and Atmospheric Administration (NOAA), monthly global average concentrations of the gas surpassed 400 parts per million in March 2015 for the first time since the administration began tracking carbon dioxide in the atmosphere.

For example, the ratio of domain - wide average concentrations of MSA / H2SO4 changes from 0.005 for the 2011 — 2013 case to 0.24 for the zero fossil fuel emissions case.

Suppressing the contribution from anthropogenic SO2 emissions leads the domain - wide average concentrations of H2SO4 to decrease by a factor of 60 and the peak concentrations by a factor of 85 but not to zero, due to the continuing contribution from OSCs.

Studies have detected lower than average concentrations of this fatty acid (also known as omega 6) in acne - prone skin.

Here are average concentrations of all PCBs taken together:

Mouse allergen concentrations in the homes of both groups were equally high, with average concentrations of 6.1 and 6.6 micrograms per gram in bedroom floor dust for IPM plus education and education only groups, respectively.

The average concentrations of DON and HT - 2 detected in beers approached 30 µg / L.

The analysis revealed that average concentrations of each class of POP were significantly higher in the 1980s than is found today, with a drop in concentration of 15 - 30 percent per decade.

The fighters at surgical risk in this study had higher - than - average concentrations of eosinophils that would still be considered normal.

Average concentrations of particles under 2.5 micrometres were between 11 and 30 micrograms per cubic metre.

Average concentrations of gold in the leaves are much higher than normal, but individual particles of the metal are still very small, few, and far between.

Sunbelt cities like Los Angeles, Riverside, Calif., and Houston, with their seemingly endless sunny days, gridlocked urban sprawl and heat - trapping stagnant air masses, contain the highest average concentrations of ozone, according to a 2009 study by University of California, Berkeley scientists.

Average concentrations of two major air pollutants from 2000 to 2012 varied by U.S. region.

Notably, Terada and his colleagues say, previous studies have shown that the overall proportions of oxygen isotopes in the ozone layer also are skewed toward above - average concentrations of oxygen - 17 and oxygen - 18.

For example, the researchers found higher - than - average concentrations of water in lunar volcanic deposits near the Moon's equator, where background water in the soil is scarce.

Average concentrations of PM2.5 in Beijing stood at 73 micrograms per cubic meter in 2016, down 9.9 percent on the previous year.

In fact, Antarctica has the highest average concentration of research personnel in the world — scientists make up 100 % of its population (which is still quite low with only 4000 «inhabitants» during the summer and about 1000 during the winter).

To date, the global average concentration of carbon dioxide in the atmosphere has increased by nearly 27 percent between 1960 and 2015, with the expectation of a continued rise in years to come, according to the researchers.

Between 1993 and 2008, the average concentration of THC in confiscated marijuana jumped from 3.4 to 8.8 percent.

In 2012, the EPA lowered the primary standard for the annual average concentration of PM2.5 particulates considered safe, as more information became known about their prevalence and danger to human health.

And even as the instruments in Hawaii indicated that we had reached the milestone, the global average concentration of CO2 was a few points lower.

Though the fist - sized rock is relatively dry by earthly standards, it contains between 10 and 30 times the average concentration of water found in other known martian meteorites — and it is the first to closely match certain aspects of the martian crust.

Both groups had an average concentration of 1.1 micrograms per gram in bed dust.

After working a shift, the average concentration of BPS in the urine of those cashiers had doubled.

In fact the average concentration of ozone is everywhere lower than the value that used to define the present ozone hole.

By 2003 they found that the average concentration of PFOA in the blood of adult americans was 4 - 5 parts per billion.

The figure below shows that, of the men with a high or average concentration of all those hormones in their blood, about 90 percent were still alive after 6 years.

The violent crime rate is below average, at 3.1 incidents per 1,000 people, and the city has an above - average concentration of young people, with 20 - to 34 - year - olds making up almost 29 percent of the population.

For the first time since the federal government began tracking carbon dioxide in the global atmosphere, the monthly average concentration of this greenhouse gas surpassed 400 parts per million in March 2015, according to latest results.

DMS was reported in human breath of healthy subjects at an average concentration of 13.8 ppb (17).

The Scripps CO2 Group, which manages the Keeling Curve record of atmospheric carbon dioxide levels, reported this week that the average concentration of CO2 at Mauna Loa was 404.16 ppm for February.

In May, the National Oceanic and Atmospheric Administration (NOAA) announced that the monthly global average concentration of carbon dioxide in the atmosphere had exceeded 400 parts per million for the first time since it had been compiling the data in 1979.

Specifically, the average concentration of carbon dioxide hits 410.31 parts per million for the month of April.

The globally averaged concentration of CO2 reached 400 parts per million, and the global average temperature climbed to more than 1 °C (1.8 °F) above pre-industrial levels.

For the first time, scientists measured an average concentration of atmospheric carbon dioxide of 400 parts per million in Mauna Loa, Hawaii, where the National Oceanic and Atmospheric Administration observatory is located, on Thursday.

More than half of India's population lives in areas where the average concentration of small airborne particles, known as PM 2.5, are much higher than considered safe, causing increased rates of lung and heart disease.

«Levels of greenhouse gases in the atmosphere reached new highs, and in the northern hemisphere spring 2015 the three - month global average concentration of CO2 crossed the 400 parts per million barrier for the first time.

The announcement Wednesday by the Beijing Municipal Environmental Protection Bureau followed a 2013 plan that ordered the city to reduce the yearly average concentration of particulate matter to less than 60 micrograms.

The average concentration of mercury in the eight products was 1.78 parts per million, more than four times higher than the «safe» level of 0.4 set by the government of Japan.

Global climate change is influenced by the average concentration of greenhouse gasses in the atmosphere and it does not matter where the carbon dioxide was emitted.

Greenhouse gas benchmark reached For the first time since we began tracking carbon dioxide in the global atmosphere, the monthly global average concentration of this greenhouse gas surpassed 400 parts per million in March 2015, according to NOAA's latest results.

286 Brian Dodge: «average concentration of Uranium in coal ash is ~ 1.3 ppm» Wrong.

[The average concentration of uranium in coal is 1 or 2 parts per million.

To crunch its numbers, the EPA calculated the average concentration of methane in the atmosphere over a 100 - year period and determined that over that period methane is 21 times more potent than carbon dioxide.

April was the first month in recorded history with an average concentration of atmospheric carbon dioxide topping 410 parts per million (ppm).

Not exact matches

Many investors are «Dow - obsessed,» following with trance - like concentration every zig and zag of that particular market average.

Since then the median name in the index was up 21 %, the average of the index members» performances was 29 %, while the index progressed by 39.5 % given the large concentration of the tail of performance in the benchmark within the index mega-cap heavyweights, as can be seen below.