海洋学报（中文版）
海洋學報（中文版）
해양학보（중문판）
ACTA OCEANOLOGICA SINICA
2015年
6期
31-40
,共10页
CO2分压%温度效应%南海北部%吕宋海峡
CO2分壓%溫度效應%南海北部%呂宋海峽
CO2분압%온도효응%남해북부%려송해협
partial pressure of CO2%temperature effect%northern South China Sea%Luzon Strait
针对南海北部和吕宋海峡附近海域的海－气 CO2通量及其调控问题，研究了2009年3月底至4月中旬在这些海域通过走航观测的方法取得的海－气 CO2分压和海表温度、盐度等相关数据。结果表明，在河口、沿岸流以外的南海北部开阔海域，与大气平衡的 CO2分压分布在368～380μatm，南低北高，平均值为371μatm；而海表 CO2分压分布在293～405μatm，南高北低。南海北部开阔海域的海表 CO2分压主要受温度效应调控，也在一定程度上受水团混合、海－气交换、生物活动等非温度效应的影响。在相同水温条件下，黑潮区的海表 CO2分压比南海北部的海表 CO2分压低。本研究和大多数前人研究的结果都表明，南海北部海盆区域和吕宋海峡西侧海域在春季与大气 CO2接近源汇平衡，而非大气 CO2的显著源区。
針對南海北部和呂宋海峽附近海域的海－氣 CO2通量及其調控問題，研究瞭2009年3月底至4月中旬在這些海域通過走航觀測的方法取得的海－氣 CO2分壓和海錶溫度、鹽度等相關數據。結果錶明，在河口、沿岸流以外的南海北部開闊海域，與大氣平衡的 CO2分壓分佈在368～380μatm，南低北高，平均值為371μatm；而海錶 CO2分壓分佈在293～405μatm，南高北低。南海北部開闊海域的海錶 CO2分壓主要受溫度效應調控，也在一定程度上受水糰混閤、海－氣交換、生物活動等非溫度效應的影響。在相同水溫條件下，黑潮區的海錶 CO2分壓比南海北部的海錶 CO2分壓低。本研究和大多數前人研究的結果都錶明，南海北部海盆區域和呂宋海峽西側海域在春季與大氣 CO2接近源彙平衡，而非大氣 CO2的顯著源區。
침대남해북부화려송해협부근해역적해－기 CO2통량급기조공문제，연구료2009년3월저지4월중순재저사해역통과주항관측적방법취득적해－기 CO2분압화해표온도、염도등상관수거。결과표명，재하구、연안류이외적남해북부개활해역，여대기평형적 CO2분압분포재368～380μatm，남저북고，평균치위371μatm；이해표 CO2분압분포재293～405μatm，남고북저。남해북부개활해역적해표 CO2분압주요수온도효응조공，야재일정정도상수수단혼합、해－기교환、생물활동등비온도효응적영향。재상동수온조건하，흑조구적해표 CO2분압비남해북부적해표 CO2분압저。본연구화대다수전인연구적결과도표명，남해북부해분구역화려송해협서측해역재춘계여대기 CO2접근원회평형，이비대기 CO2적현저원구。
To clarify air-sea CO2 flux and the controls in the northern South China Sea (SCS)and the adjacent open sea areas around the Luzon Strait,a new dataset of sea surface and atmospheric partial pressures of CO2 (pCO2 )as-sociated with underway temperature and salinity obtained from late March to mid-April in 2009 was investigated. In the northern SCS open sea areas other than those estuaries and the coastal current area,atmospheric pCO2 in-creased from 368 μatm at a south site to 380 μatm at a north site,with the average of 371 μatm,while sea surface pCO2 declined from 405 μatm in the south area to 293 μatm in the north area.The northern SCS pCO2 was signifi-cantly influenced by sea surface temperature,although non-temperature effects such as water mixing,air-sea ex-changes,and biological activities also affected the sea surface pCO2 distribution.In the Kuroshio-influenced area a-round the Luzon Strait,however,sea surface pCO2 in given water temperature was generally lower than that in the northern SCS.Based on this dataset,the author suggested that,the springtime CO2 uptake in the northern SCS ba-sin area and the area west of the Luzon Strait from the atmosphere was nearly equal to CO2 release to the atmos-phere at the same time,which is similar to the consensus in relevant literatures based on qualified data.The earlier report published in Haiyang Xuebao in 2014 suggesting that the northeast part of the SCS serves as a significant source of the atmospheric CO2 in spring is questionable.
