•  There are opportunities as well as risks
  •   There are always surprises in science ... we do not know everything

NOTE: The information given on this web page is provided by Dr John Maunder,  President of the Commission for Climatology of the World Meteorological Organization from 1989 to 1997, who over the last 50 years has been involved in the "weather business" in various countries, including New Zealand, Australia, Canada, US, Ireland, Switzerland, and the UK , through activities in national weather services, universities  and international oraganizations, and publications including four books : "The Value of the Weather" (1970), "The Uncertainty Business - Risks and Opportunties in Weather and Climate" (1986), "The Human Impact of Climate Uncertainty - Weather Information, Economic Planning, and Business Management " (1989), and the "Dictionary of Global Climate Change" (1994). The information is prepared so as to provide a "need to know" background on climate change, and global warming with the aim to promote a better understanding of this complex matter. There are a variety of viewpoints on this subject (covering the full range from those who consider that we ARE the weather makers, to those who consider that we are NOT the weather makers and that  climate change is mainly a natural event).  I have provided web links to a selection of what I consider to be relevant sites, covering both sides of the story. For further information please contact Dr John Maunder at climate@ihug.co.nz

For my web site on "A 'new' MaunderMinimum" see http://john.maunder.googlepages.com/anewmaunderminimum%3F

  • Last updated on  23 August 2008

"As we acquire more knowledge, things do not become more comprehensible, but more mysterious"  Albert Schweitzer 

 " PRAY FOR A COOL EARTH"  Headline in the Adelaide newspaper "The Advertiser"  on Christmas Day 2007. Does the Anglican Archbishop of South Australia (Jeffrey Driver) believe that GOD is "in control" or does he believe that WE are "in control"?

"Getting ahead of the world in our response to climate change is a risk that is not worth taking" Comment by  Greg Sheridan, Foreign Editor of "The Australian"  July 31, 2008. 

  • Key Points

For the latest  global temperature graphs, showing the deviation of the temperature from  "average" covering the period 1880-2007 for annual values, and 1998-2008 for monthly values, as complied by NASA, see http://data.giss.nasa.gov/gistemp/graphs.

Also see the  National Space Science and Technology Center web site which publishes monthly anomalies of the global, land, ocean, Northern Hemisphere, Southern Hemisphere, and tropical temperatures at http://nsstc.uah.edu/public/msu/t2/uahncdc.mt 39 of the 42 values listed above for the months January to July 2008 are below average.   

 

1.Communtities and businesess and individuals should always live within their climatic income - both now and in the future.

2. There are always surprises in science, and the science of climate change will probably never be fully understood.

3. It is not always true that the climate we have now (wherever we live) is the best one ... some people (and animals and crops) may prefer it to be wetter, drier, colder, or warmer. However, some species which have adapted well to any current climate may not be able to adapt to a future climate if the rate of change to that climate is too fast.

4. Climatic variations and climatic changes from WHATEVER cause (ie human induced or natural) clearly create risks, but also provide real opportunties.

5. As far as New Zealand is concerned, NIWA (see below for reference), says that ( based on their curent predictions ) some beneficial impacts are (1) initially up to 2050 - longer growing seasons and less frost are likely to benefit agriculture, horticulture, and forestry over much of NZ, provided adequate water is available; (2)  reduced energy demand is very likely in the winter; and (3) flows in New Zealand's largest rivers are likely to increase, benefiting hydroelectricty generation and irrigation supply.

6.  It is important that we should "clean-up" the environment by decreasing greenhouse gas emisions, but we should do so because in most cases it makes good economic  and social sense to do so. If, by so doing we ALSO produce a "better" climate, then we will all be winners, but we should NOT expect to be able to "control" the climate.  

7. One should always be aware that if it is really "Nature" and not "Man" in "control" of our climate,  then our only choice ( as has always been the case ) will be  to adapt to whatever "Nature" provides, and our ability to control such changes will be minimal if not zero.

8. The need to forecast the changes that will occur in the climate of the future and in particular how the current climate will vary over the next 10 to 20 years remains paramount, and the best climate-scientific brains will be required to prepare all countries for whatever the future climate will be.

  

The physicist Leo Szilard once announced to his friend Hans Bethe that he was thinking of keeping a diary: 'I  don't intend to publish, I am merely going to record the facts for the information of God.' 'Don't you think God knows the facts?' Bethe asked. 'Yes' said Szilard. "He knows the facts, but he does not know THIS version of the facts.'  

(From Hans Christian von Baeyer, "Taming the Atom" (from the preface paragraph in "A Short History of Nearly Everything", by Bill Bryson, A Black Swan Book, 2004) 

 

 The following web sites and references reflect data/views on "climate science ... global warming" divided into the following categories: A: Climate Data. B: IPCC and Niwa (The "official" viewpoint). C: References to sources questioning the "established" viewpoint on "global warming". D: New Zealand sites ( not already cited)

A. CLIMATE and SOLAR DATA

  •  For the latest temperature data - and historical data to date - for various including areas including global (land-ocean), global (meteorological stations), three latitude bands, hemispheric, and the United States, prepared by the Goddard Institute for Space Studies of NASA, see: http://data.giss.nasa.gov/gistemp/graphs/ The "global temperature graph" shows no significant change in global temperature since about 1998.  
  •  The actual "global monthly mean surface temperature" deviations from the above web site shows that - for land meteorological stations - the three 'warmest' months since from January 1997 to June 2008 are:  February 1998 (1.01degrees above average), March 2002 (0.99 degrees above average), and January 2007 (1.09 degrees above average), whereas the three 'coldest' months are July 1997 (0.19 degrees above average), January 2000 (0.13 degrees above average), and July 2004 ( 0.19 degrees above average) . The monthly values for 2008 are: January 2008 was 0.35 degrees above average, February  0.31 degrees above average, March 0.66 degrees above average, April 0.52 degrees above average, and June 0.39 degrees above average. For the land plus the ocean stations the warmest month is January 2007 with value of 0.86 degrees above average, and coolest month is January 2008 with a value of 0.12 degrees above average.

  • The University of Illinois compiles daily data of the extent of the Arctic sea ice. Daily datai is available for any day from 1990 to the present. The web site  http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh?fm  also allows a direct comparion between the extent of the Arctic sea ice on any two days during this period. The site shows a overall decrease in Arctic ice from 1990 to 2008 but an increase from August 2006 to August 2008.

  • The US National Space Science and Technology Center publishes monthly anomalies of the global, land, ocean, Northern Hemisphere, Southern Hemisphere, and tropical temperatures at http://nsstc.uah.edu/public/msu/t2/uahncdc.mt. For the month of January 2008, the anomalies were - 0.18, -0.19, -0.18, -0.24, -0.13, and -0.28 degrees; for February 2008 the values were -0.05, 0.00, -0.08, +0.13, -0.23, and -0.39 degrees; for March 2008 the values were -0.14, 0.27, -0.37, 0.07, -0.34, and -0.62 degrees; for April 2008 the values were -0.20, -0.01, -0.30, -.0.09, -0.30, and -0.61 degrees; for May 2008 the values were  -0.29, -0.12, -0.39, -0.20, -0.39, and -0.59 degrees; for June 2008 the values were -0.20, -0.17, -0.28, -0.17, -0.23, and -0.35 degrees; for July 2008  the values were -0.07, +0.09, -0.16, -0.01, -0.12, and -0.13 degrees. As shown, 39 of the 42 values listed above for the months January to July 2008 are below average.  

  • The Climate Research Unit of the University of East Anglia in the UK has a web site in which it provides their estimates of the temperature anomalies from 1961-90 "average" for various areas of the world. Their estimate for the global average temperature for the year 2007 shows an anomaly of +0.40 degrees C. This is the smallest positive deviation for a calendar year since 2000. The "global temperature" values since 1998 which had the  "peak" of the current warming of +0.53 degrees, are 1999 +0.30, 2000 +0.28, 2001 +0.41, 2002 +0.46, 2003 +0.47, 2004 +0.45, 2005 +0.48, 2006 +0.42, and 2007 +0.40 degrees. The value for the first five months of 2008 is +0.25 degrees.   For the Southern Hemisphere the 2007 anomaly is estimated to be the 'coolest" (year) since 1996. For 2008 the global values are: January +0.07 degrees C, February +0.20 degrees C, March +0.44 degrees C, April +0.26 degrees C, May +0.28 degrees C, June +0.32 degrees.(For 2008 to June the global value is +0.26 degrees C.) For details see  http://www.cru.uea.ac.uk/cru/data/temperature/hadcrut3vgl.txt
  • A summary of the monthly rainfalls( wettest, second wettest, driest and second driest, plus the long-term averages and the 1961-90 normals)  for Tauranga (NZ) from several recording sites over the last 100 to 110 years (updated to May 2008) , all data being adjusted to the current recording site at Tauranga Airport is available at  http://nzrainfalls.googlepages.com/newzealandmonthlyrainfalls
  • A "Solar Terrestrial Activity Report" including the current sunpots number compiled from various official sources and updated daily is available at http://www.dxlc.com/solar/ The International Sunspot Numbers for 2008 are January 3.4, February 2.1, March 9.3, April 2.9, May 2.9, June 3.1, and July 0.5. This compares with a value of 125 at the peak of the last sunspot cycle in April 2004.

  • For a graphical display of the sunspot index, the Maunder "butterfly" diagram, and other solar matters from the Royal Observatory of Belgium, see http://sidc.oma.be/sunspot-index-graphics/sidc_graphics.php 

     

    B. IPCC and NIWA  (The "Official Viewpoint" )

     

    • For the latest IPCC report on the impacts, adaptability and vulnerability of climate change issued in November 2007 see  http://www.ipcc.ch/ar4-wg2.htm
    • For the latest IPCC report on the mitigation of climate change issued in November 2007 see http://www.ipcc.ch/ar4-wg3.htm
    • For a summary, prepared by NIWA, on the IPCC's key findings on the impacts of climate change for New Zealand and the South Pacific download the pdf at www.niwascience.co.nz/ncc
    • A study of past climate variations over New Zealand, prepared by the New Zealand National Institute of Water and Atmospheric Research (NIWA) ,which describes climate variations over New Zealand during the past 150,00 years, and in particular describes in some detail the climate variations over the last 140 years - including a graph of the mean annual temperature over New Zealand from 1855 to 2005 is available at:  http://www.niwascience.co.nz/ncc/clivar/pastclimate#y140  
    • To see the special issue on "Climate Change: A guide for the perplexed"  published by "Newsweek" see www.newscientist.com/climatemyths
    • The UK's National Science Academy the Royal Society has on its web site a list of "misleading" arguments  about about global warming, each of which is addressed. See http://royalsociety.org/page.asp?id=6229
    •  C. REFERENCES TO SOURCES QUESTIONING THE  "ESTABLISHED    VIEWPOINT ON "GLOBAL WARMING
    • The New Zealand Climate Science Coalition mission is to represent accurately, and without predudice, facts regarding climate change; to provide considered opinion on matters related to both the natural and human-caused climate effects; and to comment on the economic and socio-political consequences of climate change. Their website is updated daily. See http://www.nzclimatescience.org.nz
    • An open letter (dated December 12, 2007) to the Secretary-General of the United Nations by over 100 scientists expressing doubts that human-caused global warming consitutes a dangerous problem is available at http://www.nationalpost.com/news/story.html?id=164002. The published list of signatories to this letter ( including several New Zealander's) are available at http://www.nationalpost.com/news/story.html?id=164004
    • "Lord Lawson claims climate change hysteria heralds a 'new age of unreason'". Report by Christpher Booker in the "Telegraph.co.uk" web site on April 7, 2008. See http://www.telegraph.co.uk/earth/main.jhtml?xml=/earth/2008/04/06/ealawson106.xml
    • "The Manhattan Declaration on Climate Change" which was agreed to at a conference in New York in March 2008 in which scientists and researchers in climate and related fields, economists, policymakers and business leaders, among other things noted that "the causes and extent of recently observed climate changes are subject to intense debates in the climate science community and that the oft-repeated assertions of a 'supposed' consensus among climate experts  are false", is available at http://www.climatescienceinternational.org . This site also includes links to many sites which in the main question the "consensus" than 'man' rather than 'nature' in in control of the climate.  
    • For a viewpoint of a 15-year student from the US on the results of her research on climate change  which gives a refreshing viewpoint see http://home.earthlink.net/~ponderthemaunder/index.html
    • An internet posting for laypeople who want to know more about "global warming" and questioning whether it is "fact" or "hoax" , see the editorial by James A Peden at http://www.middlebury.net/op-ed/global-warming-01.html
    • A perspective on climate change emphasing the overall importance of natural causes is given in "Climate Change: A Natural Hazard". This book, written by William Kininmonth, was published by Multi-Science co, UK, in 2004. 
    • For a research paper on "Climate Change: Climate Science and the Stern Review" written by R.M. Carter, C.R deFreitas, I.M. Goklany, D. Holland, and R.S. Linsdzen which was published in "World Economics", Vol 8, No.2, April-June 2007, in which the authors state:" Wrong science breeds pointless economics; it's that simple",  see:  http://www.nzclimatescience/org/images/PDFs/wec00275_00802_henderson.pdf
    •  For a web site dedicated to "sound public policy based on sound science" see:    http://scienceandpublicpolicy.org . The Science and Public Policy Insitute (SPPI) uges critical appraisal of legislative "climate fixes" for their social, political, and economic and security costs, along with their relative utiity or futility.   "An Inconvenient Expert" is how the "Outside Magazine" decribes US MIT climatologist Richard Lindzen. The article asks "Right or wrong - why do so many people think he should be silenced?"  For details see: http://outside.away.com/outside/culture/200710/richard-lindzen-1.html
    • The Judgment of Mr Justice Burton in the UK High Court of Justice on October 10,2007 in relation to the case involving the showing of Al Gore's film "An Inconvenient Truth" to every state secondary school in the UK is given at  http://www.nzcpr.com/weekly102.htm. In paragraph 40 of the Judgment, Justice Burton states that teaching staff should take care to help pupils examine the scientific evidence critically and point out where Gore's view may be inaccurate or departs from that of mainstream opinion.  
    • A paper on the "Ultralong Solar Cycle 23 and possible consequences " by Joe D/Aleo is available at http://www.intellicast.com/Community/Content.aspx? a=130

    D. NEW ZEALAND SITES (not previously cited)

    • A Powerpoint presentation of a Royal Society of New Zealand sponsored "Climate Workshop"  held in Wellington (NZ) on May 25, 2007, on the implications for NZ of the IPCC Fourth Assessment Report see  http://www.rsnz.org/events/ipcc4/  
    • The New Zealand Institute has published papers on climate change with special refernence to New Zealand. For "The economic effects of climate change: positioning New Zealand to respond" see  http://www.nzinstitute.org
    •  A very interesting site - updated daily - which gives "equal space" to both sides of the question (Nature or Man as the cause of climate change) is edited by two philosophers Denis Dutton and Doug Campbell  from the University of Canterbury. The site provides many web links to relevant sites. See  http://climatedebatedaily.com  
    •  The New Zealand PowerFutures Group forecasts of the spot electricity prices for three areas of New Zealand for selected weeks during the next two years , as well as the predicted  "hydro-electricity-climate" index for a selection of months for the North and South Islands of New Zealand during the next two years are available at: http://nzelectricitypriceforecasts.googlepages.com/home
    • PANEL DISCUSSION ON "CLIMATE CHANGE: BOTH SIDES OF THE STORY"
      A panel discussion on "Climate Change : Both Sides of the Story" ( which I chaired) was held at a  Rotary Conference in Cambridge on June 28 2008. I was President of the Rotary Club of Otumoetai for 2007-08, and Rotary District Governor John Tarbutt asked me in December 2007 to Chair a discussion on the above subject and to arrange the speakers.  I was fortunate to be able to obtain the services of Dr Jim Renwick from NIWA, who in the main, took the side of "man" and Dr Willem de Lange from the University of Waikato who in the main, took the side of "nature"
    • The organisers were very generous in giving us 1 hour 20 minutes, and this discussion was held before  600 delegates.  I open the proceedings with a brief overview of the subject with reference to the fact that when I started in the "weather and climate business" over 50 years ago, nobody would have forecast that in 2007, 15,000 people would attend a climate change conference in Bali.  I pointed out that I was the only person invited from New Zealand to attend the key WMO,UNEP, ICSU Climate Conference in Villach, Austria, in 1985, which was in the mind of many people "the start of the whole complex subject of what role 'man' and in particular greenhouse gases have in  'controlling' our climate".  The  following is what I said in my opening remarks :

      ********************
      Fortyseven years ago, after already being a weather forecaster in New Zealand and Canada for a few years, I was appointed to the staff of the University of Otago as a Lecturer in geography.  Among my duties as a Lecturer I presented an Honours course in Climatology.  At Otago the course on climatology included two main topics, first the causes of climate change, and second the evidence for climate change.  At that time, little did I know, nor I suspect any of my students could foresee the explosive nature of the subject of "Climate Science" as it is now called, during the last decade, and particularly over the past few years. 

      My involvement in climate science has subsequently involved National Meteorological Services in New Zealand, Australia, Canada, Universities in New Zealand, Canada, USA and Ireland, as well as many years involved in the World Meteorological Organization including being President of the WMO Commission for Climatology for 8 years. 

      Among the many climate science meetings I have attended, the most significant, at least as far as this afternoon is concerned, is my involvement in the WMO,UNEP.ICSU Conference held in Villach, Austria in October 1985. One hundred experts from 30 countries attended the meeting,( in contrast to thousands who now attend such meetings)  and I was privileged to be the only New Zealander invited. We were all there as experts in various fields of science endeavouring to do the best we could in looking at the complexities of climate science. -- 

      Among the principal findings of this conference was   .......

      "while other factors, such as aerosol concentration, changes in solar energy input, and changes in vegetation, may also influence climate, the greenhouse gases are likely to be the most important cause of climate change over the next century." 

      At that time, even though I was partly responsible for the writing of the paragraph I have just read, I along with a few of my colleagues, had some misgivings about it, and were somewhat surprised that with a year "human-induced climate change" caught the imagination of much of the world.

      Despite this concern, a colleague of mine from Australia, Bill Kinninmonth, who in 2004 wrote a book called "Climate Change - A Natural Hazard" has mentioned to me on several occasions that I have changed from being the :"gamekeeper" and become the "poacher".  Whether that is true is a matter of opinion.    I am sure Jim and Willem each have a view on that!

      However, irrespective of my personal views on the matter, it is very clear that there are two main views held by Climate Scientists and others: 

      *  first those who are mainly involved in the Intergovernmental Panel on Climate Change (IPCC) and many or most Government scientists, plus others, such as Al Gore, and many politicians and most journalists who consider that man, including domestic animals, is the prime cause of recent changes in the climate;

      * second, those - in the main some University Scientists and ,any retired climatologists, and a minority of politicians and journalists, who consider that Nature (or God if you prefer) is the main cause of changes in the climate.  

      Even 20 years ago, it was unconceivable that the New Zealand Government would have a Minister in Charge of Climate Change.  Accordingly, as weather forecasters and climatologists in the 1960's and 1970's, we just got on with our job of making the best possible weather forecast and providing the best climate advice, without guidance or interference from the Government of the day.  How things have changed!  

      Indeed, one of the most fascinating things about the climate change scene is the
      tremendous growth in the political and economic aspects of it.  In 1970, I wrote a book called "The Value of the Weather", and later on in 1986 I published a book called "The Uncertainty Business - Risks and Opportunities in Weather and Climate".  In both books, I made only a few references to "global warming" or "climate change" but many references to variations in the weather and climate on a day to day, season to season, and year to year basis.

    • It is my view that these variations are still paramount but the current emphasis seems to be on what is going to happen to the climate 20, 50 and 100 years ahead, and hence the debate we are now to have here this afternoon..

      ***********************************************************************************************************
       
      Jim and Willem were each given about 20 minutes to state their case, and this was followed by about 20 minutes of questions, some of which I obtained from attendees at the conference, but most were questions which came from me.  Prior to the conference, both Jim and Willem agreed that I should ask the questions. The following were some of the questions which I asked.

      ***********************************************************************************************************
      Questions :

      1. Irrespective of the cause of Climate Change, could you explain why the media and many politicians seem to consider that, in general warming, is a bad thing, and by inference does this mean that, in general cooling, is a bad thing? 

      2. If the IPCC was forecasting a cooling rather than a warming, what difference do you think that would make in Government, UN and Greenpeace attitudes? 

      3. The Maunder Minimum, from 1650-1715, which was a period of very low sunspot activities, and associated with very cold conditions in Europe, was a significant feature of the history of the last millennium.  Are we likely to get another Maunder-like minimum in the near future? 

      4. During the period of Viking exploration from about 800 to 1300AD  the Northern Hemisphere was associated with relatively warm conditions, and in many cases it was warmer then than during the last 30 or 40 years. During that 1200's Greenland had about 3000 settlements period and yet by 1550 the last of them had disappeared.  There was no human-induced greenhouse warming during that period, so is there any reason why we could not have such a period again - perhaps like what we had from about 1970 to about 2000 - unrelated to what people and domestic animals are doing?. 

      5.  I understand that the IPCC seems to be giving relatively small importance to the role of the sun. Why is this the case? Do we really know all there is to know about solar activity? 

      6.  A key debate in the climate change arena appears to be whether increases in carbon dioxide ( from whatever cause) causes warming, or whether warming causes increases in carbon dioxide.  When do you think we will be able to establish the truth about these statements, or have I go it it all wrong? 

      7. Why is an increase in carbon dioxide not considered to be a good thing? I understand that some scientists suggest that the biosphere is currently suffering from "carbon dioxide starvation", and that a doubling of carbon dioxide would increase plant production by 20%. 

      8.  Many or most climate scientists who have publicly stated that they do not agree with the findings of the IPCC are labelled as "sceptics",  yet economists who disagree with the Reserve Bank on monetary matters are not considered be "economic sceptics", but simply experts who have a different view of things"  Why is this so? 

      9.  To WILLEM : If in the future it can be established without question that the current viewpoint of the IPCC is correct, how would people like yourself and organizations who take the contrary view of the IPCC, deal with this situation? 

      10.  To JIM :  If in the future it can be established without question that the current viewpoint of the IPCC is wrong, and that nature is the main driver of climate changes, how would the IPCC, and organizations like NIWA  deal with this situation? 

      11.  My understanding is that most climate scientists who support the view that man rather than nature is in control of the climate are Government employees, whereas most climate scientists who support the view that nature, rather than man, is in control of the climate are in the main, retired.  On the other hand University Climate Scientists take a variety of positions on this subject.  Is there  any reason for this?  Is it linked to who finances the research, political agendas, or something else?

       ************************************************************************* *********************
      Jim and Willem were then given 5 minutes to sum up. 

      From what I heard from the attendees, the discussion seemed to be an excellent way of presenting this challenging subject, and my sense was that the majority of the audience there were yet to be convinced that man is really in control ( as most media, politicians including the G8 leaders, and the IPCC believe), rather than or nature.

      Jim and Willem agreed on many points, but it was the interpretation of the data, much presented in graphical manner, which was the key difference in their presentation.  Jim obviously took in the main the "IPCC line", but agreed with Willem that we did not know everything, and Willem took in the main the more "academic line", but also agreed that we do not know everything.