Long-term monitoring of carbon and oxygen isotope ratios of stratospheric CO2 over Japan
Long-term monitoring of carbon and oxygen isotope ratios of stratospheric CO2 over Japan
复制标题
日本上空平流层二氧化碳碳氧同位素比的长期监测
DOI：
10.1029/94gl03269
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发表时间：
1995
影响因子：
5.2
通讯作者：
T. Itoh
中科院分区：
文献类型：
--
作者：
T. Gamo;M. Tsutsumi;H. Sakai;T. Nakazawa;T. Machida;H. Honda;T. Itoh
自1985年以来，我们一直在测量日本上空平流层（18-35 km高度）二氧化碳的碳（δ-C-13）和氧（δ-O-18）的稳定同位素比值，在此提供了1985年至1991年期间的首次时间δ-C-13和δ-O-18记录。平流层δ C-13在人为影响下逐渐减少，速率约为-0.03%/y，与对流层的值相似。以前发现的O-18富集是平流层CO2几乎一直保持稳定，在6年，单调的增量O-18增加，随着海拔高度增加到35公里以上的日本。
We have been measuring stable isotopic ratios of carbon (delta-C-13) and oxygen (delta-O-18) of carbon dioxide in the stratosphere (18-35 km altitudes) over Japan since 1985, presenting here the first temporal delta-C-13 and delta-O-18 records between 1985 and 1991. The stratospheric delta-C-13 is gradually decreasing due to anthropogenic effects with a rate of approximately -0.03%/y, which is similar to the tropospheric value. The previously found O-18 enrichment is stratospheric CO2 has been maintained almost steadily during the 6 years, with a monotonous delta-O-18 increase with increasing altitude up to 35 km over Japan.