The results obtained from ground-based spectroscopic measurements of column-average dry-air mole fractions of CO2 in the atmosphere over the St. Petersburg region are given for the period April 2009-October 2011 (similar to 900 measurement runs, 151 measurement days). These results show significant...
[1] The absolute calibration of the relationship between air-sea CO2 transfer velocity, k, and wind speed, U, has been a topic of debate for some time, because k global average, k, as deduced from Geochemical Ocean Sections Study oceanic 14C inventory has differed from that deduced from ...
The ide a is that more trees will take in or absorb(吸收) some of the CO2in the air. CO2is a gas released by cars, factories and other human activities. The gas traps heat in the Earth’s air, which warms the planet. However, two new studies have found that trees may not be ...
During the growth of the new mixed layer RL air is entrained, which causes a rapid dilution of CO2 molecules (=-=Gibert et al., 2007-=-). The mixing height (MH, zi), normally a property of the CBL, is an intuitive measure for vertical mixing strength because it is defined as the ...
Through burning coal, oil and gas, people have been increasing the greenhouse gases in the atmosphere, such as CO2. This adds to the power of the greenhouse effect, making the planet even warmer. Many scientists believe that, if the warming is not stopped, there will be huge climate ...
In recent years, the Earth has been getting warmer. Average temperatures have risen. Possibly this isnatural but probably we are causing it. Modern people use a lot of electricity(电) and drive a lot of cars. Thisputs carbon dioxide(CO2) into the air and helps to make the planet warmer...
Rakitin A V, Poberovskii A V, Timofeev Y M, Makarova M V, Conway T J. Variations in the column-average dry-air mole fractions of CO2 in the vicinity of St. Petersburg[J]. Atmospheric and Oceanic Physics, 2013, 49: 271-275
1. We have studied the spatial variance character of ambient CO2 daily average concentration of august above Xianghai natural reserve wetland in horizontal and vertical directions. 结果表明,向海湿地贴地气层CO2日平均浓度在246~266mol/mol之间,低于三江平原湿地贴地气层乃至全球CO2浓度值,4个高度(0。
Sign in to download full-size image Fig. 4.3.18. Schematic diagram of laser beam profile [11]. Therefore the focal spot diameter depends on type of laser. For example, wavelength of CO2 laser (λ = 10.64 μm) is ten times greater than that of Nd:YAG laser, therefore the laser spot ...
CO2日平均浓度 1. We have studied the spatial variance character of ambient CO2 daily average concentration of august above Xianghai natural reserve wetland in horizontal and vertical directions. 结果表明,向海湿地贴地气层CO2日平均浓度在246~266mol/mol之间,低于三江平原湿地贴地气层乃至全球CO2浓度值,4...