The Air-Sea Exchange of CO2 in the East Sea (Japan Sea) |
| |
| Authors: | Dong-Chan Oh Mi-Kyung Park Sang-Hwa Choi Dong-Jin Kang Sun Young Park Jeom Shik Hwang Andrey Andreev Gi Hoon Hong Kyung-Ryul Kim |
| |
| Institution: | (1) Department of Oceanography and Research Institute of Oceanography, Seoul National University, Seoul, 151-742, Korea;(2) Korea Ocean Research & Development Institute, Ansan, P.O. Box 29, Seoul, 425-600, Korea;(3) Russian Academy of Science, Pacific Oceanological Institute, Vladivostok, Russia |
| |
| Abstract: | During CREAMS expeditions, fCO2 for surface waters was measured continuously along the cruise tracks. The fCO2 in surface waters in summer varied in the range 320–440 μatm, showing moderate supersaturation with respect to atmospheric
CO2. In winter, however, fCO2 showed under-saturation of CO2 in most of the area, while varying in a much wider range from 180 to 520 μatm. Some very high fCO2 values observed in the northern East Sea (Japan Sea) appeared to be associated with the intensive convection system developed
in the area. A gas-exchange model was developed for describing the annual variation of fCO2 and for estimating the annual flux of CO2 at the air-sea interface. The model incorporated annual variations in SST, the thickness of the mixed layer, gas exchange
associated with wind velocity, biological activity and atmospheric concentration of CO2. The model shows that the East Sea releases CO2 into the atmosphere from June to September, and absorbs CO2 during the rest of the year, from October through May. The net annual CO2 flux at the air-sea interface was estimated to be 0.032 (±0.012) Gt-C per year from the atmosphere into the East Sea. Water
column chemistry shows penetration of CO2 into the whole water column, supporting a short turnover time for deep waters in the East Sea.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
| Keywords: | Surface fCO2 in the East (Japan) Sea air-sea CO2 flux seasonal variability of fCO2 solubility pump gas-exchange model |
| 本文献已被 SpringerLink 等数据库收录！ |
|
