Premium
Variations of oceanic p CO 2 and air‐sea CO 2 flux in the eastern Indian sector of the Southern Ocean for the austral summer of 2001–2002
Author(s) -
Nakaoka Shinichiro,
Nakazawa Takakiyo,
YoshikawaInoue Hisayuki,
Aoki Shuji,
Hashida Gen,
Ishii Masao,
Yamanouchi Takashi,
Odate Tsuneo,
Fukuchi Mitsuo
Publication year - 2009
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2009gl038467
Subject(s) - oceanography , flux (metallurgy) , stratification (seeds) , water column , geology , climatology , environmental science , atmospheric sciences , chemistry , seed dormancy , botany , germination , dormancy , biology , organic chemistry
We examined p CO 2 air and p CO 2 sea observed in the eastern Indian sector of the Southern Ocean (south of 50°S, 140°–150°E) during austral spring‐summer from November 2001 to March 2002 using 4 research vessels. p CO 2 sea changed by as much as 200 μ atm over the 5‐month period in the Seasonal Sea Ice Zone (SSIZ), due mostly to very low values in January caused by stratification of water column and strong biological activity. In the SSIZ, the air‐sea CO 2 flux showed large temporal variations, from −2.9 g m −2 month −1 in January 2002 to −0.65 g m −2 month −1 in February 2002. The monthly oceanic CO 2 uptake in the area covered by this study (1.5 × 10 12 km 2 ) was estimated to be in a range of 1.0 × 10 −3 to 1.7 × 10 −3 PgC month −1 , with a mean value of 1.3 × 10 −3 PgC month −1 .