ATMOSPHERIC CARBON-DIOXIDE AT MAUNA LOA OBSERVATORY .2. ANALYSIS OF THE NOAA GMCC DATA, 1974-1985
ATMOSPHERIC CARBON-DIOXIDE AT MAUNA LOA OBSERVATORY .2. ANALYSIS OF THE NOAA GMCC DATA, 1974-1985
复制标题
DOI：
10.1029/jd094id06p08549
复制
发表时间：
1989-06-20
影响因子：
4.4
通讯作者：
KOMHYR, WD
中科院分区：
文献类型：
--
作者：
THONING, KW;TANS, PP;KOMHYR, WD
本文分析了夏威夷莫纳罗亚天文台NOAA GMCC计划连续12年(1974-1985)的大气CO2连续测量结果。描述了由于当地源和汇造成的二氧化碳浓度的每小时和每天的变化，并随后选择了代表本底浓度的数据。使用快速傅立叶变换和低通滤波的数字滤波技术来平滑选定的数据，并将季节性周期与二氧化碳的长期增加分开。季节循环的幅度以0.0 5±0.0 2ppm yr−1的速度增加，CO2的平均增长率为1.42±0.0 2ppm yr−1，化石燃料燃烧后残留在大气中的CO2的比例为5 9%。对夏威夷库姆卡伊角海平面现场的连续CO2数据和CO2烧瓶采样数据的比较表明，库姆卡希角的季节循环的幅度比莫纳罗阿的大23%，其中莫纳罗亚的周期比库姆卡伊角的周期滞后约1-2周。
The first 12 years (1974–1985) of continuous atmospheric CO2measurements from the NOAA GMCC program at the Mauna Loa Observatory in Hawaii are analyzed. Hourly and daily variations in the concentration of CO2due to local sources and sinks are described, with subsequent selection of data representing background concentrations. A digital filtering technique using the fast Fourier transform and low‐pass filters was used to smooth the selected data and to separate the seasonal cycle from the long‐term increase in CO2. The amplitude of the seasonal cycle was found to be increasing at a rate of 0.05±0.02 ppm yr−1. The average growth rate of CO2was 1.42±0.02 ppm yr−1, and the fraction of CO2remaining in the atmosphere from fossil fuel combustion was 59%. A comparison between the Mauna Loa continuous CO2data and the CO2flask sample data from the sea level site at Cape Kumukahi, Hawaii, showed that the amplitude of the seasonal cycle at Cape Kumukahi was 23% larger than at Mauna Loa, with the phase of the cycle at Mauna Loa lagging the cycle at Cape Kumukahi by about 1–2 weeks.