In situ calcium carbonate dissolution in the Pacific Ocean

R. A. Feely, C. L. Sabine, K. Lee, Frank J Millero, M. F. Lamb, D. Greeley, J. L. Bullister, R. M. Key, T. H. Peng, A. Kozyr, T. Ono, C. S. Wong

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

Over the past several years researchers have been working to synthesize the WOCE/ JGOFS global CO2 survey data to better understand carbon cycling processes in the oceans. The Pacific Ocean data set has over 35,000 sample locations with at least two carbon parameters, oxygen, nutrients, CFC tracers, and hydrographic parameters. In this paper we estimate the in situ CaCO3 dissolution rates in the Pacific Ocean water column. Calcium carbonate dissolution rates ranging from 0.01-1.1 μmol kg-1 yr-1 are observed in intermediate and deepwater beginning near the aragonite saturation horizon. In the North Pacific Intermediate Water between 400 and 800 m, CaCO3 dissolution rates are more than 7 times faster than observed in middle and deep water depths (average = 0.051 μmol kg-1 yr-1). The total amount of CaCO3 that is dissolved within the Pacific is determined by integrating excess alkalinity throughout the water column. The total inventory of CaCO3 added by particle dissolution in the Pacific Ocean, north of 40°S, is 157 Pg C. This amounts to an average dissolution rate of approximately 0.31 Pg C yr-1. This estimate is approximately 74% of the export production of CaCO3 estimated for the Pacific Ocean. These estimates should be considered to be upper limits for in situ carbonate dissolution in the Pacific Ocean, since a portion of the alkalinity increase results from inputs from sediments.

Original languageEnglish (US)
Pages (from-to)91
Number of pages1
JournalGlobal Biogeochemical Cycles
Volume16
Issue number4
StatePublished - Dec 2002

Fingerprint

Calcium Carbonate
calcium carbonate
Dissolution
dissolution
ocean
Water
Alkalinity
alkalinity
Carbon
water column
WOCE
Chlorofluorocarbons
CFC
Carbonates
carbon
intermediate water
aragonite
Nutrients
in situ
water depth

Keywords

  • Anthropogenic CO
  • Aragonite saturation
  • CaCO dissolution
  • Calcite saturation
  • Carbonate lysocline
  • Pacific Ocean

ASJC Scopus subject areas

  • Global and Planetary Change
  • Atmospheric Science
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Feely, R. A., Sabine, C. L., Lee, K., Millero, F. J., Lamb, M. F., Greeley, D., ... Wong, C. S. (2002). In situ calcium carbonate dissolution in the Pacific Ocean. Global Biogeochemical Cycles, 16(4), 91.

In situ calcium carbonate dissolution in the Pacific Ocean. / Feely, R. A.; Sabine, C. L.; Lee, K.; Millero, Frank J; Lamb, M. F.; Greeley, D.; Bullister, J. L.; Key, R. M.; Peng, T. H.; Kozyr, A.; Ono, T.; Wong, C. S.

In: Global Biogeochemical Cycles, Vol. 16, No. 4, 12.2002, p. 91.

Research output: Contribution to journalArticle

Feely, RA, Sabine, CL, Lee, K, Millero, FJ, Lamb, MF, Greeley, D, Bullister, JL, Key, RM, Peng, TH, Kozyr, A, Ono, T & Wong, CS 2002, 'In situ calcium carbonate dissolution in the Pacific Ocean', Global Biogeochemical Cycles, vol. 16, no. 4, pp. 91.
Feely RA, Sabine CL, Lee K, Millero FJ, Lamb MF, Greeley D et al. In situ calcium carbonate dissolution in the Pacific Ocean. Global Biogeochemical Cycles. 2002 Dec;16(4):91.
Feely, R. A. ; Sabine, C. L. ; Lee, K. ; Millero, Frank J ; Lamb, M. F. ; Greeley, D. ; Bullister, J. L. ; Key, R. M. ; Peng, T. H. ; Kozyr, A. ; Ono, T. ; Wong, C. S. / In situ calcium carbonate dissolution in the Pacific Ocean. In: Global Biogeochemical Cycles. 2002 ; Vol. 16, No. 4. pp. 91.
@article{bfb8730e6cd6463b9adc56e390ea73ba,
title = "In situ calcium carbonate dissolution in the Pacific Ocean",
abstract = "Over the past several years researchers have been working to synthesize the WOCE/ JGOFS global CO2 survey data to better understand carbon cycling processes in the oceans. The Pacific Ocean data set has over 35,000 sample locations with at least two carbon parameters, oxygen, nutrients, CFC tracers, and hydrographic parameters. In this paper we estimate the in situ CaCO3 dissolution rates in the Pacific Ocean water column. Calcium carbonate dissolution rates ranging from 0.01-1.1 μmol kg-1 yr-1 are observed in intermediate and deepwater beginning near the aragonite saturation horizon. In the North Pacific Intermediate Water between 400 and 800 m, CaCO3 dissolution rates are more than 7 times faster than observed in middle and deep water depths (average = 0.051 μmol kg-1 yr-1). The total amount of CaCO3 that is dissolved within the Pacific is determined by integrating excess alkalinity throughout the water column. The total inventory of CaCO3 added by particle dissolution in the Pacific Ocean, north of 40°S, is 157 Pg C. This amounts to an average dissolution rate of approximately 0.31 Pg C yr-1. This estimate is approximately 74{\%} of the export production of CaCO3 estimated for the Pacific Ocean. These estimates should be considered to be upper limits for in situ carbonate dissolution in the Pacific Ocean, since a portion of the alkalinity increase results from inputs from sediments.",
keywords = "Anthropogenic CO, Aragonite saturation, CaCO dissolution, Calcite saturation, Carbonate lysocline, Pacific Ocean",
author = "Feely, {R. A.} and Sabine, {C. L.} and K. Lee and Millero, {Frank J} and Lamb, {M. F.} and D. Greeley and Bullister, {J. L.} and Key, {R. M.} and Peng, {T. H.} and A. Kozyr and T. Ono and Wong, {C. S.}",
year = "2002",
month = "12",
language = "English (US)",
volume = "16",
pages = "91",
journal = "Global Biogeochemical Cycles",
issn = "0886-6236",
publisher = "American Geophysical Union",
number = "4",

}

TY - JOUR

T1 - In situ calcium carbonate dissolution in the Pacific Ocean

AU - Feely, R. A.

AU - Sabine, C. L.

AU - Lee, K.

AU - Millero, Frank J

AU - Lamb, M. F.

AU - Greeley, D.

AU - Bullister, J. L.

AU - Key, R. M.

AU - Peng, T. H.

AU - Kozyr, A.

AU - Ono, T.

AU - Wong, C. S.

PY - 2002/12

Y1 - 2002/12

N2 - Over the past several years researchers have been working to synthesize the WOCE/ JGOFS global CO2 survey data to better understand carbon cycling processes in the oceans. The Pacific Ocean data set has over 35,000 sample locations with at least two carbon parameters, oxygen, nutrients, CFC tracers, and hydrographic parameters. In this paper we estimate the in situ CaCO3 dissolution rates in the Pacific Ocean water column. Calcium carbonate dissolution rates ranging from 0.01-1.1 μmol kg-1 yr-1 are observed in intermediate and deepwater beginning near the aragonite saturation horizon. In the North Pacific Intermediate Water between 400 and 800 m, CaCO3 dissolution rates are more than 7 times faster than observed in middle and deep water depths (average = 0.051 μmol kg-1 yr-1). The total amount of CaCO3 that is dissolved within the Pacific is determined by integrating excess alkalinity throughout the water column. The total inventory of CaCO3 added by particle dissolution in the Pacific Ocean, north of 40°S, is 157 Pg C. This amounts to an average dissolution rate of approximately 0.31 Pg C yr-1. This estimate is approximately 74% of the export production of CaCO3 estimated for the Pacific Ocean. These estimates should be considered to be upper limits for in situ carbonate dissolution in the Pacific Ocean, since a portion of the alkalinity increase results from inputs from sediments.

AB - Over the past several years researchers have been working to synthesize the WOCE/ JGOFS global CO2 survey data to better understand carbon cycling processes in the oceans. The Pacific Ocean data set has over 35,000 sample locations with at least two carbon parameters, oxygen, nutrients, CFC tracers, and hydrographic parameters. In this paper we estimate the in situ CaCO3 dissolution rates in the Pacific Ocean water column. Calcium carbonate dissolution rates ranging from 0.01-1.1 μmol kg-1 yr-1 are observed in intermediate and deepwater beginning near the aragonite saturation horizon. In the North Pacific Intermediate Water between 400 and 800 m, CaCO3 dissolution rates are more than 7 times faster than observed in middle and deep water depths (average = 0.051 μmol kg-1 yr-1). The total amount of CaCO3 that is dissolved within the Pacific is determined by integrating excess alkalinity throughout the water column. The total inventory of CaCO3 added by particle dissolution in the Pacific Ocean, north of 40°S, is 157 Pg C. This amounts to an average dissolution rate of approximately 0.31 Pg C yr-1. This estimate is approximately 74% of the export production of CaCO3 estimated for the Pacific Ocean. These estimates should be considered to be upper limits for in situ carbonate dissolution in the Pacific Ocean, since a portion of the alkalinity increase results from inputs from sediments.

KW - Anthropogenic CO

KW - Aragonite saturation

KW - CaCO dissolution

KW - Calcite saturation

KW - Carbonate lysocline

KW - Pacific Ocean

UR - http://www.scopus.com/inward/record.url?scp=0012495934&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0012495934&partnerID=8YFLogxK

M3 - Article

VL - 16

SP - 91

JO - Global Biogeochemical Cycles

JF - Global Biogeochemical Cycles

SN - 0886-6236

IS - 4

ER -