Simulated Impact of Glacial Runoff on CO 2 Uptake in the Gulf of Alaska

Pilcher, Darren J.; Siedlecki, Samantha A.; Hermann, Albert J.; Coyle, Kenneth O.; Mathis, Jeremy T.; Evans, Wiley

doi:10.1002/2017gl075910

i

Simulated Impact of Glacial Runoff on CO 2 Uptake in the Gulf of Alaska

Supporting Files

2018
By Pilcher, Darren J. ; Siedlecki, Samantha A. ; Hermann, Albert J. ; ...

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Pilcher, Darren J. ; Siedlecki, Samantha A. ; Hermann, Albert J. ; Coyle, Kenneth O. ; Mathis, Jeremy T. ; Evans, Wiley
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; JISAO (Joint Institute for the Study of the Atmosphere and Ocean) ; PMEL (Pacific Marine Environmental Laboratory)
Description:

The Gulf of Alaska (GOA) receives substantial summer freshwater runoff from glacial meltwater. The alkalinity of this runoff is highly dependent on the glacial source and can modify the coastal carbon cycle.We use a regional ocean biogeochemical model to simulate CO 2uptake in the GOA under different alkalinity-loading scenarios. The GOA is identi ﬁed as a current net sink of carbon, though low-alkalinity tidewater glacial runoff suppresses summer coastal carbon uptake. Our model shows that increasing thealkalinity generates an increase in annual CO 2uptake of 1.9 –2.7 TgC/yr. This transition is comparable to a projected change in glacial runoff composition (i.e., from tidewater to land-terminating) due to continued
Keywords:

General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
Source:

Geophysical Research Letters, 45(2), 880-890
DOI:

https://doi.org/10.1002/2017gl075910
ISSN:

0094-8276 ; 1944-8007
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA10OAR4320148 ; Grant no. NA15OAR4320063
Rights Information:

Other
Compliance:

Library
Main Document Checksum:

urn:sha256:46311b2065e96f184e2f29a9b8f6cfeb7fd693797b4ad03caeba976c4c507bb2
Download URL:

https://repository.library.noaa.gov/view/noaa/54357/noaa_54357_DS1.pdf
File Type:

[PDF - 2.43 MB ]

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