Once upon a time sea level was a standard in spite of CSIRO!

8 40 am Thursday 9/February 2012


Once upon a time sea level was a standard in spite of CSIRO!

Sea level is a standard. Water - by it's very nature ensures there is no variation in sea level or elsewhere simply because all oceans are joined.

Thus the term 'sea - level.

It used to be a non - debatable In spite of  what the chief, CSIRO writes: Sea level observations The Australian 9/2.

It gets worse for anyone with a grounding in common sense; even current  scientific common sense.

WIKI ON SEA LEVELS:

 ........''Ice shelves float on the surface of the sea and, if they melt, to first order they do not change sea level. Likewise, the melting of the northern polar ice cap which is composed of floating pack ice would not significantly contribute to rising sea levels. Because they are lower in salinity, however, their melting would cause a very small increase in sea levels, so small that it is generally neglected.''

So let it be understood that the CSIRO chief' should go back to the basic year 6 science I learned in primary school before his acolytes reconfigured the non - debatable basic  facts.

He should measure standard sea levels at  beaches to prove the former and the implications of allowing ice to melt in a glass of water and try the old ice - melting in a cup to prove the latter.

Oh by the way 'chief' - your multiple use of the term ''model projections'' seem oxymoronic.

Worse quoting the discredited IPCC does not add gravitas to a story because of  the usual flummery that the CSIRO now promulgates.

What will my children learn in science if the major scintific organization in the country has become - say, unreliable? Controversial? Guilty of heroic decisions?

Sad that I cannot write what I would like to: people would think it unkind of me - and the lawyers would have a field day!

GS

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Sea-level observations

• From:The Australian 
• February 09, 2012 12:00AM

BOB Carter's references to sea level ("Scientific research drowning in a sea of alarmism", 7/2) require clarification.

Sea level observations come from measurement by satellites and, as Carter notes, a network of tide gauges around the Australian coastline operated by the Bureau of Meteorology and similar gauges internationally.

These observations show that rates of sea-level rise around Australia range from 2.6mm a year to 9.5mm a year since the early 1990s, compared with the global average rate over a similar period of about 3.2mm a year.

Variation in sea levels from region to region is to be expected, as Carter also notes, but continuing analysis indicates the dominant trend around Australia for the past 20 years is upward and above the global average.

The global average of observations is near the high end of the Inter-governmental Panel on Climate Change model projections over the same period, indicating that the range of model projections encompass changes that have occurred, and indeed that the models may be underestimating observed changes.

Bruce Mapstone, chief, CSIRO Marine and Atmospheric Research, Hobart, Tas
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Sea level

From Wikipedia, the free encyclopedia 

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (October 2011)

For the sea level change associated with the current episode of global warming, see current sea level rise.

For other uses, see Sea level (disambiguation).

Mean sea level (MSL) is a measure of the average height of the ocean's surface (such as the halfway point between the mean high tide and the mean low tide); used as a standard in reckoning land elevation.^[1] MSL also plays an extremely important role in aviation, where standard sea level pressure is used as the measurement datum of altitude at flight levels
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........Ice shelves float on the surface of the sea and, if they melt, to first order they do not change sea level. Likewise, the melting of the northern polar ice cap which is composed of floating pack ice would not significantly contribute to rising sea levels. Because they are lower in salinity, however, their melting would cause a very small increase in sea levels, so small that it is generally neglected.