WebTide Arctic Data (v0.7)

Source:

• Bedford Institute of Oceanography

Notes:

• New Arctic data set, arctic9 (July, 2009), replaces the previous set (arctic8d).
  
  The tidal prediction system for the Canadian Arctic Archipelago developed by Dunphy et al. (2005) and Hannah et al. (2008) has been improved. The improvements include extension of the mesh south to include Frobisher Bay and southern Baffin Island, increased resolution in narrow channels such as Hell Gate, Cardigan Channel, and Penny Strait, and inclusion of the very narrow Bellot Strait. A detailed comparison with Hannah et al. (2008) shows that Baffin Bay is the most-improved region, and M2 is the most-improved constituent: the average rms error over all constituents is reduced by 3 cm, while the average rms error for M2 across all regions is reduced by 2 cm. Averaged over the entire model domain the rms error of the tidal constituents is about 17 cm for M2 and about (4, 7, 6, 3) cm for (N2, S2, K1, O1). The large M2 error is dominated by the errors in Frobisher Bay, where the M2 tidal amplitude is very large.
• Five constituents available: M2, K1, N2, S2 and O1

Five constituents available: M2, K1, N2, S2 and O1

Region	M2 (cm)	N2 (cm)	S2 (cm)	K1 (cm)	01 (cm)
Baffin Bay	16.3	10.3	12.6	6.9	2.6
Arctic West	13.7	1.8	3.4	3.8	1.9
Arctic North	14.7	4.0	6.4	3.7	2.3
Arctic Northwest	7.4	1.5	3.9	4.8	2.2
Arctic Central	11.8	2.1	5.3	5.2	2.0
Arctic South Central	7.6	1.0	2.4	3.4	2.4
Arctic Southeast	11.4	4.9	5.7	8.5	3.7

Reference for model / data description:

• current data set (arctic9):
  • Collins, A. K., C. G. Hannah and D. Greenberg. 2011. Validation of a high resolution modelling system for tides in the Canadian Arctic Archipelago. Can. Tech. Rep. Hydrogr. Ocean Sci. 273: vii + 72pp.
  • Carrère, L. and F. Lyard. 2003. Modeling the barotropic response of the global ocean to atmospheric wind and pressure forcing - Comparisons with observations. Geophys. Res. Let. 30: 1275
  • Dunphy, M., F. Dupont, C. G. Hannah, D. Greenberg. 2005. Validation of Modeling System for Tides in the Canadian Arctic Archipelago. Can. Tech. Rep. Hydrogr. Ocean Sci. 243: vi + 70 pp.
  • Hannah, C.G., F. Dupont, A.K. Collins, M. Dunphy and D. Greenberg. 2008. Revisions to a Modelling System for Tides in the Canadian Arctic Archipelago. Can. Tech. Rep. Hydrogr. Ocean Sci. 259: vi + 62 pp.
  • Pairaud, I.L., F. Lyard, F. Auclair, T. Letellier and P. Marsaleix. 2008. Dynamics of the semi-diurnal and quarter-diurnal internal tides in the Bay of Biscay. Part 1: Barotropic tides, Continental Shelf Research 28: 1294-1315
• previous data set (arctic8d):
  • Hannah, C.G., F. Dupont, A.K. Collins, M. Dunphy and D. Greenberg. 2008. Revisions to a Modelling System for Tides in the Canadian Arctic Archipelago. Can. Tech. Rep. Hydrogr. Ocean Sci. 259: vi + 62 pp.
• Previous data set (arctic8c):
  • Dunphy, M., F. Dupont, C. G. Hannah, D. Greenberg. 2005. Validation of Modeling System for Tides in the Canadian Arctic Archipelago. Can. Tech. Rep. Hydrogr. Ocean Sci. 243: vi + 70 pp.
• Previous data set (arctic4):
  • Kliem, Nicolai and David A. Greenberg. 2003. Diagnostic Simulations of the Summer Circulation in the Canadian Arctic Archipelago. Atmos.-Ocean. 41.