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Remote Sensing
We are now investigating the phytoplankton dynamics in relation to the ice-ocean circulation
in the Pan-Arctic Ocean using the IARC-CIOM and Satellite dataset.
Satellite datasets used in this group include:
1. NASA/GSFC SeaWiFS and MODIS nLw dataset for estimating chlorophyll-a(chl-a) concentration,
2. NASA/JPL/PO.DAAC AVHRR Pathfinder sea surface temperature (SST),
3. NSIDC DMSP/SSM-I sea ice concentration, and
4. NASA/JPL RGPS Arctic Ocean Sea Ice Deformation dataset.
Figure 1 shows the annual averaged chl-a in the Pan-Arctic Ocean.
To compare them with results from the IARC-Coupled Ice-Ocean Model,
we are focusing on the Chukchi/Beaufort Sea (Fig. 2 and 3, red arrows indicate NCEP/NCAR wind anomaly field).
SST and sea ice in 2004 August are shown in Fig. 2
Figure 2 suggests that sea ice melting were acceralated by the inflow through the Bering Strait and anomalous northward wind.
The marine ecosystem in the Chukchi/Beaufort Sea is influenced by the ice-ocean circulation.
Figure 3 illustrates SeaWiFS OC4L chl-a in the Chukchi and Beaufort seas.
There is extremely low chl-a in the Chukchi Sea, where high SST was observed.
In the future, we will apply the ice-ocean-ecosystem model to the Chukchi/Beaufort Seas.
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