Sentences with phrase «arctic system model»

Not exact matches

Canadian Ice Service, 4.7, Multiple Methods As with CIS contributions in June 2009, 2010, and 2011, the 2012 forecast was derived using a combination of three methods: 1) a qualitative heuristic method based on observed end - of - winter arctic ice thicknesses and extents, as well as an examination of Surface Air Temperature (SAT), Sea Level Pressure (SLP) and vector wind anomaly patterns and trends; 2) an experimental Optimal Filtering Based (OFB) Model, which uses an optimal linear data filter to extrapolate NSIDC's September Arctic Ice Extent time series into the future; and 3) an experimental Multiple Linear Regression (MLR) prediction system that tests ocean, atmosphere and sea ice predictors.

Changes in a suite of ecological processes currently underway across the broader arctic region are consistent with Earth system model predictions of climate - induced geographic shifts in the range extent and functioning of the tundra and boreal forest biomes.

To study the historical evolution of the arctic system, 1948 - 2003 reanalysis data with varying NAO / AO indices will be input into the model.