Sentences with phrase «tidal gauge trends»

It is possible that such changes could significantly influence decadal tidal gauge trends, e.g., see Gratiot et al., 2008 (Abstract; Google Scholar access) or Currie, 1987 (Abstract).

Again, to justify applying another positive adjustment (this time, nearly doubling the trend from +1.7 mm / yr to +2.8 mm / yr), they relied on a comparison with tidal gauge trends!

Not exact matches

Syvitski et al., pointed out that trends at tidal gauges in delta regions depend on several factors:

So, an apparent «rising» (or «falling») trend in a tidal gauge record might actually be due to any one of several factors:

The biggest difficulty in using tidal gauges to study global sea level trends is separating local changes from global changes.

Suppose a particular tidal gauge shows an apparent trend of +3 mm / yr.

This will have introduced an artificial «sea level rise» trend into the tidal gauge records for those areas, which is actually due to the local land subsiding.

However, as we have seen throughout this section, the tidal gauge estimates the IPCC used to estimate global sea level trends are contaminated by local trends, such as tectonic activity, post-glacial rebound... and the coastal subsidence that Syvitski et al. identified!

So, the effects of such events on local trends would vary from tidal gauge to tidal gauge.

Location of the 524 tidal gauges whose linear trends have been calculated by PSMSL.

If a coastline is gradually rising or falling due to plates colliding, it would cause the tidal gauges to show an artificial «sea level» trend.

In order to use tidal gauges to reliably estimate global sea level changes, researchers have to successfully separate the components of shifting land heights and local sea level variability from any global trends.

Moreover, we also have argued elsewhere that linear trends should be treated cautiously when the data shows non-linear trends, as many tidal gauges do.

Despite the various problems with the tidal gauge data, it is possible that the various estimates of global sea level trends of 1 - 2 or maybe 2 - 3 mm / year might coincidentally be correct.

And using Church & White tidal gauge data (which today only runs to 2013 but AR5 had data to 2009), the final years are running above 4mm / yr while such 11 - yr trends calculated through the full record never top 3mm / yr.

The overall trend discerned from the tide gauge data, according to Wolfgang Scherer, Director of Australia's National Tidal Facility, remains flat.