Auxiliary material for paper 2009JC005267

Seasonal forcing of summer dissolved inorganic carbon and 
chlorophyll a on the Western Shelf of the Antarctic Peninsula


Martin Montes-Hugo
Coastal Ocean Observation Laboratory, Institute of Marine and Coastal Sciences, School of Environmental and Biological Sciences, Rutgers University–State University of New Jersey, New Brunswick, New Jersey, USA.

Colm Sweeney 
Global Monitoring Division, Earth Systems Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA.

Scott C. Doney 
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA.

Hugh Ducklow 
Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts, USA.

Robert Frouin
Scripps Institution of Oceanography, University of California, San Diego, California, USA.

Douglas G. Martinson 
Lamont-Doherty Earth Observatory–Department of Earth and Environmental Sciences, Columbia University, Palisades, New York, USA.

Sharon Stammerjohn 
Ocean Sciences, University of California, Santa Cruz, California, USA.

Oscar Schofield
Coastal Ocean Observation Laboratory, Institute of Marine and Coastal Sciences, School of Environmental and Biological Sciences, Rutgers University–State University of New Jersey, New Brunswick, New Jersey, USA.


Montes-Hugo, M., C. Sweeney, S. C. Doney, H. Ducklow, R. Frouin, D. G. Martinson, S. Stammerjohn, and O. Schofield (2010), Seasonal forcing of summer dissolved inorganic carbon and chlorophyll a on the western shelf of the Antarctic Peninsula, J. Geophys. Res., 115, C03024, doi:10.1029/2009JC005267.


Introduction

This data set includes additional information related to 
uncertainty of satellite-derived sea ice concentration,
analysis of phytoplankton pigments, validation of 
DIC-derived pCO2, and linkage between summer stratification
and sea concentration during preceding winter. 


1. 2009jc005267-txts01.pdf


Variation of chlorophyll a concentrations due to accessory pigments
and methodological differences. (a) Relationship between
HPLC-derived chlorophyll b (Chl bHPLC) and chlorophyll a
(Chl aHPLC) concentration per unit of volume
(empty circles), model fitting (solid line), (b) Covariation
between averaged surface samples (0-20 m depth) of Chl aHPLC
and chlorophyll a concentration per unit of volume measured
by fluorometry and using the acid-method (Chl aFluo)
(empty circles), model fitting (solid line),
1:1 relationship (dash line). 

Comparison between direct and DIC-derived measurements of pCO2 (empty circles),
model fitting (solid line).  

Relationship between upper mixed layer (UMLD) during January and
sea ice area (SIA) during previous winter; (a) monthly
UMLD (black rectangles), winter SIA anomaly
(empty circles), vertical bars indicate one standard
error, (b) negative exponential fitting of averaged
UMLD during January as a function of winter SIA anomaly
(solid line), observations (solid circles), between
parentheses is one standard error.

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