HR: 0800h
AN: C41A-0178    [Abstracts]
TI: Connections among atmospheric forcing, river runoff, and oceanological conditions in the Chukchi, East-Siberian and Laptev seas
AU: * Semiletov, I P
EM: igorsm@iarc.uaf.edu
AF: International Arctic Research Center, University Alaska Fairbanks, 930 Koyukuk Drive, Fairbanks, AK 99775 United States
AB: Available historical meteorological and hydrological data sets mostly unknown to Western scientific society from the Laptev, East-Siberian (ESS), and Chukchi seas, have been collected and combined. All available hydrochemical data have been also accumulated. Comparing land-shelf data for two seminal areas of the Arctic, 1) the Laptev-western ESS, and 2) the eastern ESS-Chukchi Sea, shows a general opposition in ice and hydrological regimes. Thermal state (long-term and interannual variability)of the East-Siberian and Chukchi seas has been studied in connection with land thermal regime and atmospheric forcing. Anomalous "warm", "normal", and "cold" hydrological years were identified in the East-Siberian and Chukchi seas. Efforts are now underway to reveal the connections among the conditions in the East-Siberian, Laptev and Chukchi seas and the ice regime. Carbon dioxide (CO2) distribution and its fluxes are being studied in connection with atmospheric forcing using our own data. Dissolved methane distribution in the surface layer of the East-Siberian sea shows a plume of high concentration driven by Kolyma river runoff. Inflow of Pacific waters in the East-Siberian sea has been studied in different time-scales: from tens of years up to hundreds.
DE: 9315 Arctic region
DE: 4536 Hydrography
DE: 1836 Hydrologic budget (1655)
DE: 1655 Water cycles (1836)
SC: Cryosphere [C]
MN: 2004 AGU Fall Meeting