Ph.D, University of Illinois at Urbana-Champaign
Phone: (520) 626-7453
A new paper about the sea level rise along the East Coast of the US has been published by Geophysical Research Letters.
(1) The sea level rise along the East Coast of the US (Florida to Maine) shows notable patterns and significant deviation from the global mean. (2) During much of the 20th century, the faster sea level rise in the Mid-Atlantic region (North Carolina to New Jersey) is attribitable to the overall northward shift of the Gulf Stream. (3) During the past decades, the faster sea level rise north of Cape Hatteras than to the south is caused by the decline of the density contrast across the Gulf Stream.
Figure 1. Mean dynamic sea level (DSL) and sea level rise (SLR) patterns along the East Coast of the U.S. (a) Observed (red curve; mean of 1993-2010) and simulated (blue curve; mean of 1986-2005) mean DSL. The rectangles indicate the cross-current DSL difference (high values minus low values) along the green lines shown in Figure 2b. The simulations are from the 20th century run of ESM2M. The latitudes of the eastern U.S. coastal cities are also indicated. (b) Coastal SLR rates (linear trend) from the TG data for the periods of 1950-2012 and 1993-2012. The raw TG data are corrected on the basis of both the GIA modeling and GPS observations about the vertical land movement. (c) Decadal trends (1993-2002 and 2003-2012) of the CSIRO altimetry data, together with the 20-year overall trend. The error bar indicates ± one standard error.