The South Pacific Sea Level & Climate Monitoring
Project Sea Level Data Summary Report JULY 2008 — JUNE 2009 (1.6 MB pdf)
Not exact matches
Coastal altimetry, which provides detailed wave and
sea level data in the coastal zone captured by specialist instruments called radar altimeters on board satellites, is at the heart of the
project and scientists from NOC have been at the cutting - edge of this technique.
This new
data will help researchers better
project future changes to glaciers and ice sheets, and ultimately,
sea level.
Bed topography
data are vital for computer models used to
project future changes to ice sheets and their contribution to
sea level rise.
In my
project I analyzed long - term water
level data sets of various locations at the Baltic
Sea.
And based upon late Quaternary stratigraphic
data from peninsular Florida's shelf and coastal zone, historic wetland accumulation rates, and residence time of coastal construction
projects (i.e. beach «nourishment», dune «restoration»), by mid-century the rate of predicted
sea level rise will result in erosional shoreface retreat and ultimately overstep of both the natural and built environment.
Corell noted that the
projected rise in
sea level during this century of 18 — 59 centimeters (7 — 23 inches) by the Intergovernmental Panel on Climate Change was based on
data that were two years old.
A review of trend models applied to
sea level data with reference to the «acceleration - deceleration debate» Global
sea levels have been rising through the past century and are
projected to rise at an accelerated rate throughout the 21st century.
Among other things, this means that the IPCC team, which did not have the ice melt
data through the 1990s, will need to revise upward its
projected rise in
sea level for this century — currently estimated to range from 0.09 meters to 0.88 meters (from 4 to 35 inches).
Different approaches have been used to compute the mean rate of 20th century global mean
sea level (GMSL) rise from the available tide gauge
data: computing average rates from only very long, nearly continuous records; using more numerous but shorter records and filters to separate nonlinear trends from decadal - scale quasi-periodic variability; neural network methods; computing regional
sea level for specific basins then averaging; or
projecting tide gauge records onto empirical orthogonal functions (EOFs) computed from modern altimetry or EOFs from ocean models.
«Dr. Amstrup, however, said that according to the National Snow and Ice
Data Center, the average September
sea ice extent for the years 2007 to 2017 was 4.5 million square kilometers, «nowhere near the low
levels projected it would be by the middle of the century.»
I concluded that the projections of extreme
sea level rise are not consistent with plausible physical mechanisms, not supported by the available
data, and further, that the AR4
projected range (about 30 - 50 cm by 2100) agreed perfectly with my projections over a wide range of warming scenarios.
Bureau Home > Marine & Ocean > South Pacific
Sea Level and Climate Monitoring
Project > Consolidated
Data Reports
Yes, the first Table (Recent short - term
sea level trends in the
Project area based upon SEAFRAME
data through September 2006) lists trends of 2.7 to 17 mm / yr.
The
project will provide accurate
data to inform such activities as storm surge and
sea -
level rise mapping for the Islands.
Tidal
data for the Torres Strait Islands region is insufficiently accurate to manage and respond to events such as storm surge and
projected sea level rise.