Sentences with phrase «tide gauge records with»

This task involved extensive time series analysis that identified Singular Spectrum Analysis (SSA) as an optimal analytic for resolving estimates of mean sea level from long tide gauge records with improved accuracy and temporal resolution, since it provides a superior capability to separate key time varying harmonic components of the time series.

Thus you should look at the Vermeer & Rahmstorf (2009) study linked above, which correlates the tide gauge record with global mean temperature since 1880 and shows that the modern acceleration of sea level rise is closely related to modern global warming.]

Not exact matches

For instance, with more tide gauges deployed today than hundreds of years ago, recent records yielded more certainty than older ones.

In a second step, we apply the method to reconstructing 2 - D sea level data over 1950 — 2003, combining sparse tide gauge records available since 1950, with EOF spatial patterns from different sources: (1) thermosteric sea level grids over 1955 — 2003, (2) sea level grids from Topex / Poseidon satellite altimetry over 1993 — 2003, and (3) dynamic height grids from the SODA reanalysis over 1958 — 2001.

Tide gauges located along the world's coastlines that have been recording water levels for many decades or even centuries provide the most accurate source of information on ESL, but they are unevenly distributed (with most of them located in North America and Europe)(Menéndez and Woodworth 2010) hampering broad - scale (up to global) assessments.

The biggest problem in comparing long - term SL records has been that the tide gauge method of measurement was replaced with satellite altimetry around 1993.

Tide - gauge data from Diego Garcia (1988 — 2000, and 2003 — 2011) show no statistically significant long - term rise, whilst the rates of rise obtained from the satellite altimeter record for 1993 — 2011 span the range of 0.16 — 4.56 mm yr − 1 in the surrounding sea areas (70 — 74 ° E and 4 — 9 ° S) and are also consistent with a zero rate except in the far south of the region... this has been a relatively stable physical environment, and that these low - lying coral islands should continue to be able to support human habitation, as they have done for much of the last 200 years.

I've been updating the tide - gauge - only record from Church & White 2011 using psmsl data (about 700 tide gauge records in total though about 200 reporting at any one time) and find trends up to 2012 are very much consistent with satellite data.

Using CMIP5 simulations prescribed with historical greenhouse gas concentrations and future projections (representative concentration pathway 8.5), together with the ECMWF (European Centre for Medium - Range Weather Forecast) operational ocean reanalysis of the observed climate and tide - gauge records to verify the model results, the authors found that projected climate change will enhance El Niño - related sea level extremes.

This is achieved through the study of three independent records, the net heat flux into the oceans over 5 decades, the sea - level change rate based on tide gauge records over the 20th century, and the sea - surface temperature variations... We find that the total radiative forcing associated with solar cycles variations is about 5 to 7 times larger than just those associated with the TSI variations, thus implying the necessary existence of an amplification mechanism, although without pointing to which one.

«However, a greater rate of rise in the early part of the record is consistent with previous analyses of tide gauge records which suggested a general deceleration in sea level rise during the 20th century [Woodworth, 1990; Douglas, 1992; Jevrejeva et al., 2006].»

Now I am not a great fan of the aggregated tide gauge record seeing as it relies on so few gauges (as cited) most with short histories (as cited) or have moved (as cited) or have been interpolated (as cited) To globally aggregate such low grade information only compounds the errors However, anyone working on flood defence work would use a tide gauge as it provides a more accurate record of the place where the sea actually hits the land, where people live, as opposed to satellites which measure open sea.

Over the Arctic, significant correlations between the AO index and tide gauge records have been found, but with distinct regional variations.

Tide gauges with the longest nearly continuous records of sea level show increasing sea level over the 20th century.

To test the validity of their approach, the team compared its reconstructions with tide - gauge measurements from North Carolina for the past 80 years, and global tide - gauge records for the past 300 years.

The former hasn't ever directly compared satellite data with tide - gauge records over the exact same period, and the latter just lies about it, and sea - level change in general.

http://www.nature.com/nature/journal/v517/n7535/full/nature14093.html «Here we revisit estimates of twentieth - century GMSL rise using probabilistic techniques9, 10 and find a rate of GMSL rise from 1901 to 1990 of 1.2 ± 0.2 millimetres per year (90 % confidence interval)... also indicates that GMSL rose at a rate of 3.0 ± 0.7 millimetres per year between 1993 and 2010, consistent with prior estimates from tide gauge records»