by Mike Bailey

I am a retired Surveyor who spent his whole career (1965 to 2010) measuring and recording:

• Water depths, to enable safe navigation of ships and boats into harbours.
• Coastal features, such as shorelines and beaches, to monitor changes in depth that occur over time.
• Near shore constructions, such as sea walls, groynes wharves, piers and jetties and boat ramps to monitor their effect on the surrounding areas.

In order for these depth measurements to have any coherence they have to be related to a common reference level. In Australia this common reference level or Datum is the Australian Height Datum (AHD).

AHD is a mean sea level datum and was established by analysis of data from recording tide gauges which operate in ports around Australia and which in some cases have been operating for around a century. (see below) I have not found any proposal that this datum be changed due to the rising sea level.

AHD was adopted by the National Mapping Council in May 1971 as the datum to which all vertical control for mapping was to be referred.

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“The Climate Study Group” intends to publish this advertorial in “The Herald Sun”, May 14th, 2019:

[Select the image to view the PDF document.]

By Dr. Jay Lehr
Source: https://www.cfact.org/2019/04/10/its-time-for-us-all-to-recognize-the-97-con-game/

We are confident that all of our readers have read or heard for a number of years that 97% of all scientists believe that mankind has played a role in changing the earth’s climate. While it should have been recognized long ago as an urban myth, one of those stories that hang around regardless of a lack of any supporting facts. Rarely a day goes that a global warming alarmists do not use it to promote their cause of enlarging government and reducing personal freedom through the promotion of fear about our future.

Many articles have been written to refute this claim but they all dig into the statistical weeds. Common sense alone should set you straight. If the reader wishes he or she read could read the original paper by Naomi Oreskes that started it all in Science Magazine in December of 2004. Be aware you might die laughing.
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