Abstract
During the IRONEX cruise in the equatorial Pacific Ocean, the carbonate parameters, TA (total alkalinity), TCO2 (total inorganic carbon), pH and fCO2 (fugacity of CO2), were determined both in a small (8 x 8 km) patch of water fertilized with Fe and in the waters around the Galapagos Islands. The CO2 parameters, along with hydrographic properties, were found to be uniform in the surface waters of the study area before the addition of iron. A significant decrease of the surface TCO2 (7 μmol kg-1) and fCO2 (11 μatm) in the patch was detected within 48 h of the iron release. This decrease, however, did not continue and was lower than expected from the complete utilization of NO3/- due to the addition of iron. The shipboard iron addition experiments (3 nM Fe) resulted in a continual decrease of TCO2 (up to 48 μmol kg-1) and complete consumption of the nutrients. A good correlation was found between TCO2, pH and fCO2 with temperature in the surface waters around the Galapagos Islands. The salinity (S = 35) normalized alkalinities were quite uniform (NTA = 2310 ± 9 mol kg-1) throughout the region. The effect of high primary production on the CO2 system in the downstream plume is overshadowed by the upwelling waters with high CO2.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1115-1134 |
| Number of pages | 20 |
| Journal | Deep-Sea Research Part II: Topical Studies in Oceanography |
| Volume | 45 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 1998 |
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ASJC Scopus subject areas
- Aquatic Science
- Geology
- Oceanography
Cite this
Carbonate system in the waters near the Galapagos Islands. / Millero, Frank J; Yao, Wensheng; Lee, Kitack; Zhang, Jia Zhong; Campbell, Douglas M.
In: Deep-Sea Research Part II: Topical Studies in Oceanography, Vol. 45, No. 6, 06.1998, p. 1115-1134.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Carbonate system in the waters near the Galapagos Islands
AU - Millero, Frank J
AU - Yao, Wensheng
AU - Lee, Kitack
AU - Zhang, Jia Zhong
AU - Campbell, Douglas M.
PY - 1998/6
Y1 - 1998/6
N2 - During the IRONEX cruise in the equatorial Pacific Ocean, the carbonate parameters, TA (total alkalinity), TCO2 (total inorganic carbon), pH and fCO2 (fugacity of CO2), were determined both in a small (8 x 8 km) patch of water fertilized with Fe and in the waters around the Galapagos Islands. The CO2 parameters, along with hydrographic properties, were found to be uniform in the surface waters of the study area before the addition of iron. A significant decrease of the surface TCO2 (7 μmol kg-1) and fCO2 (11 μatm) in the patch was detected within 48 h of the iron release. This decrease, however, did not continue and was lower than expected from the complete utilization of NO3/- due to the addition of iron. The shipboard iron addition experiments (3 nM Fe) resulted in a continual decrease of TCO2 (up to 48 μmol kg-1) and complete consumption of the nutrients. A good correlation was found between TCO2, pH and fCO2 with temperature in the surface waters around the Galapagos Islands. The salinity (S = 35) normalized alkalinities were quite uniform (NTA = 2310 ± 9 mol kg-1) throughout the region. The effect of high primary production on the CO2 system in the downstream plume is overshadowed by the upwelling waters with high CO2.
AB - During the IRONEX cruise in the equatorial Pacific Ocean, the carbonate parameters, TA (total alkalinity), TCO2 (total inorganic carbon), pH and fCO2 (fugacity of CO2), were determined both in a small (8 x 8 km) patch of water fertilized with Fe and in the waters around the Galapagos Islands. The CO2 parameters, along with hydrographic properties, were found to be uniform in the surface waters of the study area before the addition of iron. A significant decrease of the surface TCO2 (7 μmol kg-1) and fCO2 (11 μatm) in the patch was detected within 48 h of the iron release. This decrease, however, did not continue and was lower than expected from the complete utilization of NO3/- due to the addition of iron. The shipboard iron addition experiments (3 nM Fe) resulted in a continual decrease of TCO2 (up to 48 μmol kg-1) and complete consumption of the nutrients. A good correlation was found between TCO2, pH and fCO2 with temperature in the surface waters around the Galapagos Islands. The salinity (S = 35) normalized alkalinities were quite uniform (NTA = 2310 ± 9 mol kg-1) throughout the region. The effect of high primary production on the CO2 system in the downstream plume is overshadowed by the upwelling waters with high CO2.
UR - http://www.scopus.com/inward/record.url?scp=0032100890&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032100890&partnerID=8YFLogxK
U2 - 10.1016/S0967-0645(98)00016-2
DO - 10.1016/S0967-0645(98)00016-2
M3 - Article
VL - 45
SP - 1115
EP - 1134
JO - Deep-Sea Research Part II: Topical Studies in Oceanography
JF - Deep-Sea Research Part II: Topical Studies in Oceanography
SN - 0967-0645
IS - 6
ER -