The Canary in the Coal Mine

In days of yore, coal miners would take caged canary into the mine with them as the birds were more sensitive to poisonous gases than humans; if the canary died then the miners got out – alive.‘Climate sceptics’ have long accused ‘climate activists’ of (to continue the metaphor) breeding highly sensitive canaries and looking for dangerous coal mines. Up to now I’ve studiously respected
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GLOBAL SEA LEVEL RISESummaryThe average rate of sea level rise from 1880 to 2013 is 1.6 mm/yearThe rate of sea level rise is not constant. It is increasing at 0.014 mm/year/year.Superimposed on the rising sea levels is a cyclical component with a periodicity of about 50 years which is synchronous with the Atlantic Multidecadal Oscillation.CSIRO EstimateSea levels have risen more than 100 m since the
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SEA LEVELS - PACIFIC ISLANDS

Sea Levels - Pacific IslandsSEA LEVELS - PACIFIC ISLANDSThere is concern that sea level rise might threaten the existence of some small island communities.Since the early 1990s the Australian Bureau of Meteorology has been running the Pacific Sea Level Project. The continually monitor sea level, air temperature and water temperature among other parameters. Given the motto of this site “Where numbers
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MODELLING THE INFLUENCE OF CLIMATE CHANGE ON TONLE SAP WETLAND

Tonle Sap wetland and the influence of climate changeModel of Tonle SapTonle Sap is the largest lake in South-East Asia and is a wetland of international importance and is recognised by the Ramsar convention. Like most wetlands its area varies significantly through the year, from 2000 km2at its lowest to ten times that figure at its largest.  The bed of lake is close to sea level and its maximum
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SEA LEVELS

SEA LEVELSSea levels have been rising since the maximum of the last ice 20,000 years ago. The rate of sea level rise is regarded as an indicator of climate change. The change in sea levels is driven by two factors: the thermal expansion of the sea water as it warms and the melting of ice over land.Long Term Sea Level ChangeDuring an ice age, ice covers are large areas around both poles. The amount
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ZHOU AND TUNG

In a recent posting I said I would be commenting on a paper by Zhou and Tung (Zhou, J., and K. Tung, 2012: Deducing Multi-decadal Anthropogenic Global Warming Trends Using Multiple Regression Analysis. J. Atmos. Sci.doi:10.1175/JAS-D-12-0208.1, in press.)When I came across this paper I had mixed feelings. The paper says very similar things to those have I have been saying since January 2012: that the
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AMO AND ANTHROPOGENIC AEROSOLS

It has been pointed out that the model I described in my earlier post (Climate and the Atlantic Multidecadal Oscillation) ignored anthropogenic aerosols. Here I look at the effect of adding these into the model.DataThe data used were downloaded from http://data.giss.nasa.gov/modelforce/Fe.1880-2011.txt. They were used in J. Hansen, et al. (2007) "Climate simulations for 1880-2003 with GISS model
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A PARTIAL VINDICATION

The following comes from a press release from the University of Reading (UK). "Natural climate variations could explain up to 30% of the loss in Arctic sea ice since the 1970s, scientists have found. "Sea ice coverage at the North Pole has shrunk dramatically over the past 40 years. The ice is now more than a third smaller each September following the summer melt than it was in the 1970s. This affects
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CLIMATE AND THE ATLANTIC MULTIDECADAL OSCILLATION

1. IntroductionI would guess that whoever you are, if you were to be told that all the 0.75 °C increase in global temperatures over the past 150 years was due to the increase in anthropogenic greenhouse gases but that temperatures over the next three decades would increase by only 0.1 °C you would have mixed reactions. If you were a sceptic you would scoff at the suggestion that greenhouse gases
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YAMAL AND TEMPERATURE - PART 2

On 16 May 2012 we posted on temperatures in the Yamal peninsula. This is one of the sites much discussed for its influence on temperature reconstructions. In the earlier post we looked at measured temperature data from two stations. This time we have looked at a group of stations in and around the peninsula as shown in the following map. The data were from the station files used by the CRU for their
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