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 ...
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
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
CO2 concentration ppm and effect on plants for the greenhouses gardening or indoor garden When plants appeared and evolved on Earth, it is known for a fact that carbon dioxide (CO 2) concentration was much higher than it is now. Then, the CO 2 concentration was certainly above 1000 parts per million (ppm). Actually, the average CO 2 concentrat
CO2 Now | Current CO2 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
CO2 Concentration - The Krib (Aquaria and Tropical Fish) DIY-CO2 and "Tetra Bells" by niels-at-lofgren.demon.co.uk ("Niels M. Sampath") Date: Tue, 1 Feb 1994 In article booth-at-hplvec.LVLD.HP.COM writes: >In our manual CO2 setup, the CO2 runs all the time, day and night. The ...
二氧化碳- 維基百科，自由的百科全書 - Wikipedia 當二氧化碳高於5,000 ppm的時候，會影響健康，而高於約50,000 ppm的濃度（相當於空氣中5％的體積）被 ...
ZyAura -- 資訊下載-- 新聞稿: 室內空氣品質偵測二氧化碳為首要 根據ASHRAE(美國冷凍空調學會)的建議，室內二氧化碳濃度達700 PPM時，會感覺空氣污濁與引起不舒適 ...
CO2 Now | CO2 Home The concentrations of CO2 in the atmosphere are increasing at an accelerating rate ... The upper safety limit for atmospheric CO2 is 350 parts per million (ppm).
Trends in Atmospheric Carbon Dioxide - NOAA Earth System ... The graph shows recent monthly mean carbon dioxide measured at Mauna Loa Observatory, ... The mole fraction is expressed as parts per million (ppm). ... and may not be the same as the globally averaged CO2 concentration at the surface.
