11 July 2011

Global mean land temperature chart NASA GISS Land



This is my version of the well-known chart of NASA's temperature data from land instruments showing global warming since 1880. Yes, the temperature series researched and prepared by James Hansen. I got the data from the Carbon Dioxide Information Analysis Centre. Its just as easy to download the data from NASA as well.

The chart does not show absolute temperature on the vertical axis, it shows the difference (or the 'anomaly') from the mean temperature recorded for the period from 1951 to 1980. In other words, Wellington's actual temperature on any day will be very different from that of a place near the equator. However, the use of the anomaly or difference from the average temperature for 1951-1980, standardises the data to a common scale. Also, absolute temperature varies a lot over short distances, but annual temperature anomalies are strongly correlated out to distances of a 1000 km.

I made the chart with the R programme.

Here's the code, assuming you have downloaded the data file "gl_land.txt" to your R working directory.

13 June 2011

Almost cut my hair (if I had any)

Here's some nostalgia courtesy of Crosby, Stills, Nash and Young.

03 May 2011

Blackfish Ltd DOC Porter Heights Crystal Valley land swap

Crystal Valley is an east-facing valley in the bottom or southern end of the Craigieburn Range in Canterbury. It's immediate neighbour to the south is the Porter Heights skifield, which enthusiastically markets itself as "Christchurch's closest ski area".

Blackfish Ltd, a company financed by Australians and Russians, has some well-advanced expansion plans for Porters Heights. They want DOC to give them the title to Crystal Valley and some adjoining areas in return for a bush remnant on Banks Peninsula. They want to expand the skifield and build a 3000 bed lodge.

Claire Browning gives the full background in Crystal Valley, and the conservation state and reports that Al Morrison the Director-General of DOC has agreed to swap the land. Claire asks (roughly) how could the landswap achieve a net gain in conservation values when the land that goes to Blackfish gets made into skifield? And why are DOC proposing to swap land that the Nature Heritage Fund painstakingly purchased specifically for DOC from a pastoral leasee, the Castle Hill Station?

I wrote to Kate Wilkinson the Minister of Conservation and asked in terms of the Official Information Act for copies of Al Morrisons decision and the advice from DOC. My requests were answered last Friday 29 April, after 19 working days.

They sent me the DOC report to Al Morrison (DOC_report-to-Morrison-Blackfish-21-02-2011.pdf ) and (Morrison-Blackfish-11-03-2011.pdf).

I have scanned them and uploaded them to Google Docs.

* the DOC report to Al Morrison DOC_report-to-Morrison-Blackfish-21-02-2011.pdf 7749KB.

* Al Morrison's decision on the landswap Morrison-Blackfish-11-03-2011.pdf 1778KB.

Things that stand out on my first reading.

1. DOC is proposing to swap land that is not even conservation land!

Crystal Valley is not yet conservation stewardship land under the Conservation Act. The Nature Heritage Fund purchase, the surrender of the pastoral lease and the transfer to DOC have not been completed. Crystal Valley is still crown land with a pastoral lease held by Castle Hill Station and administered by LINZ. see para 8.1, page 7 of the DOC report to AL Morrison.

2. When Crystal Valley is gazetted as land held for conservation purposes, which is why former Minister of Conservation Chris Carter signed up for it, it will also be gazetted as a conservation park under s 18 of the Conservation Act. Which is the whole point of plugging the gap between Korowai/Torlesse Tussocklands Park and the Craigieburn Forest Park. A conservation park cannot be swapped. DOC have put a paper to Kate Wilkinson to have Crystal Valley not gazetted as conservation park.

3. Under section 16A of the Conservation Act, DOC has a discretion to swap 'stewardship land' (land held for conservation purposes but not classified as conservation park or wildlife area (see section 2 Interpretation) Arguably, DOC has no jurisdiction to swap crown land under pastoral leases.

4. Given the arguable lack of jurisdiction, why did DOC engage in a lengthy iterative process with Blackfish? Why didn't DOC say to Blackfish "We can't look at your landswap application, we have no authority over Crystal Valley until it is legally held for conservation".

5. The two specialist biodiversity reports commissioned by DOC (one by DOC botanist Nick Head, the other by consultant Markus Davies) concluded that the land swap would result in a net loss of biodiversity.

6.However, through a use of further offers of easements and encumbrances on Crystal Valley back to DOC, deft prose and dense matrices/tables, the report to Al Morrison concludes that the swap will "enhance the conservation values of land managed by the Department".

7. Consultation with Ngai Tahu and the Aoraki/Canterbury Conservation Board look formalistic. "We told them what we were doing and we ignored their response". Definitely not following the Kaikoura whale-watching case.

02 May 2011

ACT quote of week

"I now know why ACT believes so strongly in the rights of the individual - no two of their members agree on anything."


Dave Armstrong, writing today for Fairfax/Stuff, Eyes Right as Don 'Quixote' Brash gallops in.

13 April 2011

Coming Clean - New Zealand's Emissions Trading Scheme Explained

There is a new video available on-line explaining the NZ Emissions Trading Scheme.

Its called Coming Clean - New Zealand's Emissions Trading Scheme Explained and the film maker is Lindsay Horner.

Its very good. It hammers the key points well;
  • that the NZETS lacks the real cap on greenhouse gas emissions that is an essential part of a textbook 'cap-and-trade' scheme.
  • that relying on post-1990 forestry carbon credits to match growth in GHGs since 1990 is the same as borrowing on a credit card, as the forestry carbon credits will have to be surrendered when the forests are eventually logged.


Coming Clean - New Zealand's Emissions Trading Scheme Explained from Lindsay Horner on Vimeo.

07 April 2011

PCE Jan Wright mining still an issue

Dr Jan Wright, the Parliamentary Commissioner for the Environment explains that mining within the conservation estate is still a live political issue, in spite of the Government withdrawing the proposal to allow more mining in the Schedule 4 areas (40% of the total).



Wright is against the Minister of Energy having any role in granting access to the conservation estate for mining.

31 March 2011

Earthquake surface flooding

Here is a Youtube video of surface flooding probably caused by liquefaction immediately after the Christchurch earthquake.