MODELING OF FUTURE ARCTIC SEA ICE CHANGE «Given the estimated trend and the volume estimate for October — November of 2007 at less than 9,000 km3 (Kwok et al. 2009), one can project that at this rate it would take only 9 more years or until 2016 ± 3 years to reach a nearly ice - free Arctic Ocean in summer.»
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.
Within the confines
of our work with RASM and CESM, we will: (i) quantify the added value
of using regional
models for downscaling
arctic simulations from global
models, (ii) address the impacts
of high resolution, improved process representations and coupling between
model components on predictions at seasonal to decadal time scales, (iii) identify the most important processes essential for inclusion in
future high resolution GC / ESMs, e.g. ACME, using CESM as a test bed, and (iv) better quantify the relationship between skill and uncertainty in the
Arctic Region for high fidelity
models.
It is intellectually dishonest to devote several pages to cherry - picking studies that disagree with the IPCC consensus on net health effects because you don't like its scientific conclusion, while then devoting several pages to hiding behind [a misstatement
of] the U.N. consensus on sea level rise because you know a lot reasonable people think the U.N. wildly underestimated the upper end
of the range and you want to attack Al Gore for worrying about 20 - foot sea level rise.On this blog, I have tried to be clear what I believe with my earlier three - part series: Since sea level,
arctic ice, and most other climate change indicators have been changing faster than most IPCC
models projected and since the IPCC neglects key amplifying carbon cycle feedbacks, the IPCC reports almost certainly underestimate
future climate impacts.