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CO2 Now | CO2 Home The 2013 average annual concentration of CO2 in the atmosphere (Mauna Loa Observatory) is 396.48 parts per million (ppm). The 2012 average is 393.82 ppm. For the past decade (2004-2013) the average annual increase is 2.1 ppm per year. The average for the
NOAA修正：CO2濃度尚未破400ppm 但重點在「速度」 | 台灣環境資訊 ... 2013年5月14日 ... 美國大氣總署（NOAA）夏威夷測站在9日發現測得二氧化碳（CO2）濃度第一次超過 400ppm，但幾日後發佈 ...
Carbon dioxide in Earth's atmosphere - Wikipedia, the free encyclopedia Carbon dioxide (CO 2) is an important long-lived trace gas in Earth's atmosphere currently constituting about 0.04% (400 parts per million) of the atmosphere. Despite its relatively small overall concentration, CO 2 is a potent greenhouse gas and plays a
Trends in Atmospheric Carbon Dioxide - NOAA Earth System Research Laboratory The annual mean rate of growth of CO 2 in a given year is the difference in concentration between the end of December and the start of January of that year. If used as an average for the globe, it would represent the sum of all CO 2 added to, and removed
二氧化碳濃度暴增1607ppm 趙天麟：學生身心受威脅| ETtoday ... 2014年3月20日 ... 事實上，室內二氧化碳濃度只要超過800ppm就會令人感到不舒服、疲倦或頭痛；超過 1000ppm，更易影響 ...
ESRL Global Monitoring Division - Global Greenhouse Gas Reference Network The table shows annual mean carbon dioxide growth rates based on globally averaged marine surface data. The annual mean rate of growth of CO 2 in a given year is the difference in concentration between the end of December and the start of January of that
Universal Industrial Gases, Inc...CO2 Carbon Dioxide Properties, Uses, Applications - Recovery from Carbon dioxide in air is considered to be a greenhouse gas because of its ability to absorb infrared light. The concentration of CO 2 in the Earth's atmosphere has been increasing at a noticeable rate for much of the past century, There is much ...
The Keeling Curve | A daily record of atmospheric carbon dioxide from Scripps Institution of Oceanog The Scripps CO2 measurements at Mauna Loa have been supported for many years by the U.S. Department of Energy (DOE), and have more recently been supplemented by Earth Networks, a technology company that is collaborating with Scripps to expand the ...
