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Published: Friday 26 July, 2013

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California has begun installing regional greenhousegas detection systems in metropolitan areas, becoming the first US state to gather such regional data.



Sensors have been placed on Sutro Tower in San Francisco and Richland Tower in the Sacramento suburbs as part of the California Greenhouse Gas Emissions Project, a collaboration between state and federal agencies and universities. They measure greenhousegas concentrations twice a day.



The project started by researchers at the Lawrence Berkeley National Laboratory in Berkeley, California plans eventually to monitor gases at ten locations, using the data to help establish whether California is reaching its go lv handbags outlet al of reducing atmospheric greenhouse gases by cutting state emissions. Readers should note that this work was planned, and is now being conducted, in collaboration with the Global Monitoring Division of the National Oceanic and Atmospheric Administration, with support from the California Energy Commission. By design, the data obtained from this effort will be used to both evaluate the feasibility of estimating regional GHG emissions within California, and to improve prospects for estimating GHG emissions at the national scale in support of the North American Carbon Program. Marc L. Fischer, CALGEM Project Leader,



Published concentrations of atmospheric carbon dioxide are almost exclusively over the ocean, and then only when values are almost constant. Measurements from land areas are hardly ever given. Radiat lv handbags outlet ive forcing is calculated from the ocean value only, but actual radiative forcing, for example over California, i lv handbags outlet s surely related to the actual measured concentrations over California.



Since the calculation involves an equation using the logarithm of the concentration, low concentrations have a larger weight in any average than the high concentrations. lv handbags outlet

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