Diurnal dynamics of the CO2 concentration in water of the coastal zone of Lake Baikal in the ice period (testing of the DIEL - CO2 method for assessment of lake metabolic rate).

被引：0

作者：

Panchenko, M. V. ^{[1
]}

Domysheva, V. M. ^{[2
]}

Pestunov, D. A. ^{[1
,3
]}

Sakirko, M. V. ^{[2
]}

Ivanov, V. G. ^{[2
]}

Shamrin, A. M. ^{[1
]}

机构：

[1] RAS, SB, VE Zuev Inst Atmospher Opt, Tomsk, Russia

[2] RAS, SB, Limnol Inst, Irkutsk, Russia

[3] Natl Res Tomsk Polytech Univ, Tomsk, Russia

来源：

23RD INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS: ATMOSPHERIC PHYSICS | 2017年 / 10466卷

关键词：

Baikal; carbon dioxide; photosynthesis; gross primary production; net production; ice period; PHOTOSYNTHESIS;

D O I：

10.1117/12.2284470

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Results of three long cycles of 24-hour measurements of the carbon dioxide content in the surface and bottom water in the ice period of 2014-2016 in the Baikal coastal zone are analyzed. The diurnal dynamics of the CO2 concentration in the subglacial water, in which photosynthesis plays the leading role, is described. It is found that, in comparison with the surface subglacial water (that is, directly adjacent to the ice bottom), the more pronounced diurnal rhythm of CO2 is observed in the bottom layer in all realizations. This rhythm is well correlated with pyranometer readings. The data on the diurnal dynamics of CO2 are used to estimate the gross primary production in the bottom water with the DIEL method based on the analysis of temporal variability of the carbon dioxide concentration in water in situ.

引用

页数：7

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