Comparative analysis of the dynamics of biogenic elements and direction of carbon dioxide fluxes between the atmosphere and the water surface in Lake Baikal and in bays of the Sea of Japan.

Measured СО2 flux between the atmosphere and water and the dynamics of biogenic elements in cardinally different water basins: Lake Baikal and coastal maritime conditions, are compared. We conduct regular cycles of combined observations at the Southern Baikal shore for different seasons at the Baikal Atmospheric-Limnological Observatory (BALO). The measurements under maritime conditions were conducted at the stationary station of the Far East Branch of the Russian Academy of Sciences at Schultz Cape in the period of October 6-10 of 2012 and October 7-13 of 2013, as well as in 2014 a cycle of investigations on the assessment of spatial variability was carried out. The most remarkable distinctive feature of the content of dissolved gases and their flux under maritime conditions (Far East) is the permanent sink of carbon dioxide from the atmosphere onto the water surface. At Lake Baikal in this period, we observed the pronounced diurnal dynamics characterized by the daytime sink and nighttime emission of СО2 into the atmosphere.

[1]  M. Panchenko,et al.  Air-Water Carbon Dioxide Exchange in the Littoral Zone of Lake Baikal (Ice-Free Period) , 2013 .

[2]  Martin Johnson,et al.  Ocean-Atmosphere Interactions of Gases and Particles , 2013 .

[3]  Hua Xu,et al.  Carbon dioxide and methane fluxes in the littoral zones of two lakes, east Antarctica , 2010 .

[4]  R. Wanninkhof,et al.  Chemical enhancement of CO2 exchange in natural waters , 1996 .

[5]  Mikhail V. Panchenko,et al.  Spatial distribution of carbon dioxide fluxes, biogenic elements, and phytoplankton biomass in the pelagic zone of Lake Baikal in spring period of 2010–2012 , 2014 .

[6]  D. Bolgrien,et al.  Phytoplankton Photosynthesis in Southern Lake Baikal: Size-Fractionated Chlorophyll a and Photosynthetic Parameters , 1991 .

[7]  Christopher B. Field,et al.  Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation: Index , 2012 .

[8]  M. Panchenko,et al.  Seasonal behavior of the CO2 gas exchange process in the “atmosphere-water” system of littoral zone of Southern Baikal. 3. Autumn , 2013 .

[9]  K. Takai,et al.  Autotrophic picoplankton in southern Lake Baikal: abundance, growth and grazing mortality during summer , 1994 .

[10]  M. Sakirko,et al.  Seasonal behavior of the CO2 gas exchange process in the “atmosphere-water” system of the littoral zone of southern Baikal. 1. Hydrological spring , 2011 .

[11]  L. Lijklema,et al.  Carbon dioxide fluxes across the air-water interface and its impact on carbon availability in aquatic systems. , 1995 .

[12]  R. Wanninkhof.  Relationship between wind speed and gas exchange over the ocean , 1992 .