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Tag: concentrations
Near-record jump in carbon concentrations in global atmosphere last year
2013-03-06 19:09:00| Climate Ark Climate Change & Global Warming Newsfeed
Mongabay: Carbon dioxide now makes up around 395 parts per million in the atmosphere, according to new data from the National Oceanic Atmospheric Administration (NOAA). Measuring atmospheric carbon in Mauna Loa, Hawaii, the NOAA notes that last year saw a jump of 2.67 parts per million, second only to a record jump in carbon concentrations in 1998-2.93 parts per million. The news further dampens hopes that nations will stick to their goal of keeping global temperatures from rising more than 2 degrees Celsius...
Atmospheric CO2 Concentrations Show Second-Largest Annual Increase
2013-03-06 18:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Yale Environment 360: The amount of carbon dioxide in the atmosphere increased by 2.67 parts per million in 2012, marking the second-biggest jump since levels were first recorded in 1959 and decreasing the chances that the planet will avoid a dangerous temperature increase of 3.6 degrees F (2 C) or higher, U.S. scientists say. The new data, collected in Mauna Loa, Hawaii, suggests that levels of heat-trapping CO2 are now just under 395 parts per million (ppm) and could hit 400 ppm within two years, according to the National...
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Sensors Measure Sludge Concentrations too Thick for Optical Methods
2013-02-22 17:21:55| Chemical Processing
Operators can program sludge-removal pumps for optimum density for feeding to digesters, belt presses and centrifuges.
Tags: methods
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Madera County Groundwater Quality: Fumigants Found More Often At High Concentrations Than In Other Areas Of California
2013-02-12 00:57:05| pollutiononline News Articles
Arsenic, uranium, fumigants and nitrate were detected at high concentrations in untreated groundwater at depths in the aquifer system typically used for public water supply in the Madera County region of California’s San Joaquin Valley.
At current CO2 concentrations, sea level set to rise about 30 feet during the next few centuries
2013-01-03 15:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Summit Voice: Even if atmospheric carbon dioxide concentrations were to be stabilzed at today`s levels of about 400 parts per million, sea levels would gradually increase by about 30 during the next few centuries, according to researchers who calibrated CO2 levels against sea level for the past 40 million years. The study sought to pinpoint the 'natural equilibrium` sea level for CO2 concentrations ranging between ice-age values of 180 parts per million and ice-free values of more than 1,000 parts per million....