doi:10.1183/1393003.congress-2017.PA1250Introduction: Carbon Dioxide (CO2) is not considered to be a direct cause of health effects, especially at normal concentrations (350-2500 ppm). Nevertheless, CO2 emissions are related to the industrialization of a country and its overall pollution levels ...
Global warming is accelerating – the facts • Since the Industrial Revolution, which introduced machinery powered by coal and gas, atmospheric CO2 concentration has increased by about 40%, to above 400 parts per million (ppm).11 Current CO2 levels are 100 ppm higher than at any time in ...
Fernández-Martínez等人[325]进一步发现在1995~2014年间, 大气CO2浓度升高使全球陆地NEP增加3.1~8.1 Pg C/100 ppm. 最近的一项研究认为, 1982~2015年间CO2施肥效应对全球大部分陆地生态系统总初级生产力(gross primary productivity, GPP)的促进作用呈下降趋势, 意味着陆地碳汇对气候系统的负反馈效应正在...
CO2 has been declining in a linear fashion now for 160 my. During the depths of the first part of the current Ice Age it has been found that the level fell to around 180ppm or 20 ppm above the death of plants ( photosynthesis is compromised at 160ppm). The current increase halting ...
Individual winners and the Cup winning Team of the 2017 World Photographic Cup (WPC) were announced on February 23rd at the WPC 2017 PHOTO SHOW in Japan (Yokohama, Grand Intercontinental Hotel) organized in cooperation with the PPJ, Professional Photographers of Japan Association.Here are the top...
It is also labelled “15 ppm CO2”, meaning the record level ofcarbon dioxide measured in the air in May.In 1890, the glacier ice covered 16 square kilometres but in 2012, it measured just 0. 7 square kilometres,according to a report from the University of Iceland from 2017.In 2014, ...
The issue of increasing CO2 emissions is leading to tracking the global emissions hotspots, which was not an essential concern before the industrial revolution. The CO2 emissions were 280 ppm, and after the industrial revolution, they surpassed 410 ppm [10]. Therefore, it is necessary to target...
Human emissions of greenhouse gases have increased atmospheric concentrations of CO2, methane and nitrous oxide to their highest levels in at leasta few million years— if not longer. The figure below shows concentrations of these greenhouse gases — inparts per million(ppm) for CO2 (blue line)...
Individual winners and the Cup winning Team of the 2017 World Photographic Cup (WPC) were announced on February 23rd at the WPC 2017 PHOTO SHOW in Japan (Yokohama, Grand Intercontinental Hotel) organized in cooperation with the PPJ, Professional Photographers of Japan Association.Here are the top...
Germans are already highly energy efficient and use 53% of total per capita energy that the US does and produce 55% of the CO2 emissions per capita compared to the US. (They are 1.1% of the world’s population and produce 2.4% of world CO2 emissions while the US is 4.4% of the ...