Sentences with phrase «regional sea level records»

The IPCC's assessment of the literature, prior to our study, was that global sea - level fluctuations over the last 5 millennia were < ± 25 cm, and that there was no clear evidence of whether specific fluctuations seen in some regional sea level records reflected global changes.

Not exact matches

Choice of GIA correction is critical in the trends for the local and regional sea levels, introducing up to 8 mm · yr − 1 uncertainties for individual tide gauge records, up to 2 mm · yr − 1 for regional curves and up to 0.3 — 0.6 mm · yr − 1 in global sea level reconstruction.

«As Morner points out, Church,, White, and Hunter applied a number of regional «corrections» to the basic tide gauge record and calculated averages of a large region to arrive at their conclusion that sea level was rising in the Maldives.

Statistically significant trends obtained from records longer than 40 years yielded sea - level - rise estimates between 1.06 — 1.75 mm / yrear - 1, with a regional average of 1.29 mm yr - 1, when corrected for global isostatic adjustment (GIA) using model data, with a regional average of 1.29 mm - 1..

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.

See E.W. Leuliette, R.S. Nerem, and G.T. Mitchum, «Results of TOPEX / Poseidon and Jason - 1 calibration to construct a continuous record of mean sea level,» Marine Geodesy 27:79 - 94, 2004, and B.D. Beckley, F.G. Lemoine, S.B. Luthcke, R.D. Ray, and N.P. Zelensky, «A reassessment of global and regional mean sea level trends from TOPEX and Jason - 1 altimetry based on revised reference frame and orbits,» Geophysical Research Letters 34 (14): L14608, 2007.