northwest Rate of global sea level rise is increasing
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Interfacion Pty Ltd is pleased to announce that the QED PI Detector has been modified to allow the use of DD (double D) coils. This change involves a simple change to the electronics within the control box.
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australian electronic gold prospecting forum.com  |  Off topic  |  Off topic  |  Climate change  |  Topic: Rate of global sea level rise is increasing 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Rate of global sea level rise is increasing  (Read 98 times)
Doug
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« on: Friday August 9 2019 21:27:02 AEST PM »

Rate of global sea level rise is increasing
Global average sea level has risen by about 7–8 inches (about 16–21 cm) since 1900 , with about 3 of those inches (about 7 cm) occurring since 1993. Human-caused climate change has made a substantial contribution to sea level rise since 1900, contributing to a rate of rise greater than during any preceding century in at least 2,800 years. In addition to the global average sea level rise, local sea level rise – sometimes called “relative sea level rise” – happens at different rates in different places. Local sea level rise is affected by the global sea level rise, but also by local land motions, and the effects of tides, currents, and winds.
NB for the climate denier  Inhere who makes a goat of himself yet again  as is indicated above some places in sea level will rise others it may even fall due for example to isostatic effects. So your ONE example from ONE location is meaningless!What matters is global average sea level rise you idiot!
  
link-https://www.globalchange.gov/browse/indicators/global-sea-level-rise
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Doug
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« Reply #1 on: Friday August 9 2019 21:38:15 AEST PM »

  
Rate of global sea level rise is increasing
Global average sea level has risen by about 7–8 inches (about 16–21 cm) since 1900 , with about 3 of those inches (about 7 cm) occurring since 1993. Human-caused climate change has made a substantial contribution to sea level rise since 1900, contributing to a rate of rise greater than during any preceding century in at least 2,800 years. In addition to the global average sea level rise, local sea level rise – sometimes called “relative sea level rise” – happens at different rates in different places. Local sea level rise is affected by the global sea level rise, but also by local land motions, and the effects of tides, currents, and winds.
NB for the climate denier  Inhere who makes a goat of himself yet again  as is indicated above some places in sea level will rise others it may even fall due for example to isostatic effects. So your ONE example from ONE location is meaningless!What matters is global average sea level rise you idiot!
  
link-https://www.globalchange.gov/browse/indicators/global-sea-level-rise
Shown below is a MSL rise at Fort Denison since 1920.The rsie in MSL is clearly evident but perhaps not to that climate denier dope Inhere MAD!!!
Perhaps the denier dope  Inhere can  tell us why the satellite data is wrong and why we should rely on the just on the Fort Denison tide gauge data. Should be good for a laugh!!!!
doug smile



Australian sea levels—Trends, regional variability and influencing factors

Under a Creative Commons license
open access

Abstract
There has been significant progress in describing and understanding global-mean sea-level rise, but the regional departures from this global-mean rise are more poorly described and understood. Here, we present a comprehensive analysis of Australian sea-level data from the 1880s to the present, including an assessment of satellite-altimeter data since 1993. Sea levels around the Australian coast are well sampled from 1966 to the present. The first Empirical Orthogonal Function (EOF) of data from 16 sites around the coast explains 69% of the variance, and is closely related to the El Niño Southern Oscillation (ENSO), with the strongest influence on the northern and western coasts. Removing the variability in this EOF correlated with the Southern Oscillation Index reduces the differences in the trends between locations. After the influence of ENSO is removed and allowing for the impact of Glacial Isostatic Adjustment (GIA) and atmospheric pressure effects, Australian mean sea-level trends are close to global-mean trends from 1966 to 2010, including an increase in the rate of rise in the early 1990s. Since 1993, there is good agreement between trends calculated from tide-gauge records and altimetry data, with some notable exceptions, some of which are related to localised vertical-land motions. For the periods 1966 to 2009 and 1993 to 2009, the average trends of relative sea level around the coastline are 1.4 ± 0.3 mm yr? 1 and 4.5 ± 1.3 mm yr? 1, which become 1.6 ± 0.2 mm yr? 1 and 2.7 ± 0.6 mm yr? 1 after removal of the signal correlated with ENSO. After further correcting for GIA and changes in atmospheric pressure, the corresponding trends are 2.1 ± 0.2 mm yr? 1 and 3.1 ± 0.6 mm yr? 1, comparable with the global-average rise over the same periods of 2.0 ± 0.3 mm yr? 1 (from tide gauges) and 3.4 ± 0.4 mm yr? 1 (from satellite altimeters). Given that past changes in Australian sea level are similar to global-mean changes over the last 45 years, it is likely that future changes over the 21st century will be consistent with global changes. A generalised additive model of Australia's two longest records (Fremantle and Sydney) reveals the presence of both linear and non-linear long-term sea-level trends, with both records showing larger rates of rise between 1920 and 1950, relatively stable mean sea levels between 1960 and 1990 and an increased rate of rise from the early 1990s.
  
link-https://www.sciencedirect.com/science/article/pii/S0012825214000956
Shown below is the MSL at Fort Denison since 1920. The rise in MSL is clearly evident to all except the denier dope Inhere JESTER!!!
Perhaps the denier dope Inhere can tell why the satellite data is wrong and instead we should rely just on the  tide gauge data from F Denison. Should be good for a laugh!
"Barratrooper" on  finders forum is  also sadly wrong! F Denison   sea level has increased(as the data shows)by about 50mm (currently about .65mm/year) since records began! Land ice melt is not the only contributor to sea level rise- thermal expansion(water expands as the temp rises) is a major contributor  as  result of the oceans warming(the oceans are the earths major heat sink!)
 Look at the actual data "Barratrooper" before you post next time and then you won't look like the denier dope "Inhere"!
doug smile


* Fort Denison.png (32.15 KB, 900x360 - viewed 39 times.)

* Sea level.jpg (209.1 KB, 556x754 - viewed 26 times.)

* Fort Denison.jpg (196.25 KB, 1098x584 - viewed 17 times.)

* Nerem-SL-1.png (150.54 KB, 917x640 - viewed 17 times.)
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