Kara Sea

Kara Sea summer quasi-stationary circulation: climate, AO+, AO- .

Panteleev G., A.Proshutinski, M.Kulakov, D.Nechaev, W.Maslowski

Results have been submitted to JGR, special AOMIP issue.

The *.pdf file can be douwloaded here

Data:

1. Hydrophysical T/S measurements. 2. Estimates of the transport through the Kara Gates and Novaya Zemlya - Frans Josef passage. 3. Meteorological data.

Figure 1. Optimized quasistationary circulation in the Kara Sea.kara_sea.html

Figure 2. Composite ADCP measurements in the Kara Sea.

Features of the Kara Sea circulations:

1. Anticyclonic circulation in the central part of the KS (ROFI); 2. Northeastward current along the ENZT; 3. Weak southwestward current along the eastern NZ coast; 4. Weak eastward Persey current along the FJL;. 5. Inflow/outflow of the Atlantic water along the western/eastern sides of the St. Anna and Voronin Trough; 6. Two branches of the outflow through the eastern boundary; 7. Transport of 0.63 Sv, 1.18 Sv, 1.32 Sv, 0.52 Sv through the Kara Gate, NZ-FJL passage, northern, and eastern boundary respectively; 8. 100 % of the inflow between NZ and FJL outflows through the St. Anna Trough;. 9. 75 % of the Kara Gate inflow outflows through the Vilkitsky/Shokalsky Straits; 25% - through the northern boundary

The comparison of the optimized circulation with the results of other numerical models show:

1) The drawback of the HAMSON regional model (Harms and Karcher, 1999) is the enhanced barotropization of the model solution. 2) The drawbacks of the NPS Pan-Arctic model are: a) Absents of the explicit river discharges. b) Restoring to the climatological data and week interannual (and probably seasonal) variability.