Sir David King, “We are being misled over the economic impact of climate change”

April 27, 2009

The government’s former chief scientific advisor Professor Sir David King has expressed concern that the government is being “misled” on the economic impact of climate change as the information they are using – Lord Stern’s review – is “out of date”.

Professor King discusses the possible ramifications, from the BBC:


Oxford researchers create world malaria maps

March 26, 2009

snap

The Malaria Atlas Project recently finished a worldwide spatial database of malaria epidemicity.

The MAP team have assembled a unique spatial database of linked information based on medical intelligence and satellite-derived climate data to constrain the limits of malaria transmission and the largest ever archive of community-based estimates of parasite prevalence. To-date we have collated 14,710 parasite rate surveys (P.f. 14,393; P.v. 4618) from an aggregated sample of 2,979,627 slides in 84 countries. These data have been assembled and analysed by a group of geographers, statisticians, epidemiologists, biologists and public health specialists.

Worldwide maps here (warning, very heavy PDF’s).


Met Office creates “Dangerous Climate Change” research programme

March 25, 2009

The Met Office has announced the beginning of AVOID, a research programme designed to build the evidence based around catastrophic climate change.

The press release, found here, states,

The initiative aims to further improve the Government’s evidence base on the science of climate change and to contribute to securing decisive global action that will reduce and respond to it. It will address key questions such as “how much climate change is too much?” and “What does the world need to do to avoid such levels of climate change?” The key objective of AVOID, in its first year, will be to provide supportive evidence to UK negotiators who aim to secure a robust international agreement in Copenhagen this December which will reduce global greenhouse gas emissions.


Irreversible climate change, meet unstoppable political force

February 16, 2009

Geoengineering, complexity, and the uncertain political necessities of tomorrow 

Last month Susan Solomon – Nobel Prize winning chair of the IPCC – and scientists from the National Oceanic and Atmospheric Administration (NOAA) published a paper entitled “Irreversible climate change because of carbon dioxide emissions.”  (Summary of the paper found here, BBC coverage found here.)

The study found that, “If CO2 is allowed to peak at 450-600 parts per million, the results would include persistent decreases in dry-season rainfall that are comparable to the 1930s North American Dust Bowl in zones including southern Europe, northern Africa, southwestern North America, southern Africa and western Australia.”  In other words,

…changes in surface temperature, rainfall, and sea level are largely irreversible for more than 1,000 years after carbon dioxide (CO2) emissions are completely stopped. 

Even if we stopped all CO2 emission now, the Earth will still experience significant warming over the next 1,000 years.  This sounds like pretty damning evidence from some of the best scientists working on the issue.

Two recent articles have examined political and technological responses to this very, very bad news, both focusing on large scale geoengineering.  Ideas range from the fantastic, such as large floating mirrors in space that reflect sunlight, to the mundane, such as dumping tones of iron sulphate into the ocean to encourage the growth of carbon eating plankton.

Jamais Cascio, co-creator of many cool things such as the massively multiplayer online futures experiment Superstruct, has a powerful argument why geoengineering is both a very bad idea and yet also politically inevitable.  In an article for Grist, entitled “Plan B”,  he writes:

Geoengineering is risky, likely to provoke international tension, certain to have unanticipated consequences, and pretty much inevitable.

Cascio’s main points are that despite the widespread uncertainty about the technical aspects of geoengineering, projects are likely to go ahead anyway, with significant political consequences.  

The political issues geoengineering raises are directly relevant to the post-Welphian context within which the Humanitarian Futures Programme operates.

  • With geoengineering being global in impact, who determines whether or not it’s used, which technologies to deploy, and what the target temperatures will be? 
  • Who decides which unexpected side-effects are bad enough to warrant ending the process? 
  • Given that the expense required for sulfate injection (and likely cloud-brightening) would be low enough for a single country to undertake, what happens when a desperate “rogue nation” attempts geoengineering against the wishes of other states?  
  • And with the benefits and possible harm from geoengineering attempts being unevenly distributed around the planet, would it be possible to use this technology for strategic or military purposes? 

Alex Steffan argues that such projects have a huge “epic fail” potential.  He suggests that, “It’s bad planetary management to build large, singular and brittle projects when small, multiple and resilient answers exist and will suffice if employed. It’s bad planetary management to assume that this time — unlike essentially every other large-scale intervention in natural systems in recorded history — we’ll get it right and pull it off without unintended consequences.”  

Climate scientist Ray Pierrehumbert writes, “[Geoengineering] is not really insurance. It’s more like building a lifeboat, but a lifeboat based on a design that has never been used before which has to work more or less perfectly the first time the panicked passengers are loaded into it.”

These risks alone should make any sane civilisation shy away from such “all or nothing” bids for survival.  We at HFP find so interesting is the tone of urgency involved in this debate.  These issues are being discussed with a refreshing sense of clarity, scientific understanding, and political calculation.  It is as if our lives really are at stake, time might already have run out, and we might really only have one shot at getting it right if we are to survive.  What survival might look like is another issue, but it is clear that planetary survival is a desirable outcome; certainly in line with humanitarian aid’s underlying ethos.

The humanitarian community should be following this debate, if not directly engaging in it.  Its outcome has large and game-changing implications for the way aid is done, indeed, if it will even be done at all.  Cascio touches on this issue briefly in a related comment to Steffan’s article, 

The political clashes, accusation of crimes against humanity, and potential for catastrophe [which are ] possible in a geoengineering scenario are even more likely in a scenario where emissions reductions fail to work in time, and we’re left fighting over environmental scraps…

This is sobering realism.  It paints a realistic and scary picture of the panicked international response that could occur if things begin to change quicker than expected.  In the end, argues Cascio, it’s not the technical issues which will matter.  It’s the political pressure that will decide how we respond:

If we start to see faster-than-expected increases in temperature, deadly heat waves and storms, crop failures and drought, the pressure to do something will be enormous. Desperation is a powerful driver. Desperation plus a (relatively) low-cost response, coupled with quick (if not necessarily dependable) benefits, can become an unstoppable force.

Welcome to the 21st century; where irreversible climate change meets an unstoppable political force; with massive, vital, and unknown consequences.


Mapping future water stress

February 9, 2009

Researchers at the University of Kassel in Germany have produced a series of projections mapping areas of water stress across the globe.  The BBC presents projected maps here.

The team mixed Hadley Centre GCM models with regional climate models to estimate changes in precipitation, then compared these to a variety of socio-economic scenarios from the IPCC to estimate demand.  

Regional downscaling is always a controversial topic and many climate scientists argue that GCM’s provide unreliable local precipitation forecasts (see the recent HFP seminar on climate science and humanitarian planning).

One of the surprises for HFP from looking at these maps was the extent of water crises in Western China.  What are the humanitarian implications of this for the Central Asian steppes?


Researchers produce map of likelihood of dying by natural hazard in USA

January 6, 2009

This is an interesting mapping exercise from some researchers in the US.  

UNC-Columbia used historical mortality data from the United States to construct a map of the probability of dying from natural hazards.  It is based on historical data and thus doesn’t include future projects of climate change.  But is nonetheless quite interesting.

From the press release:

A map of natural hazard mortality in the United States has been produced. The map, featured in BioMed Central’s open access International Journal of Health Geographics, gives a county-level representation of the likelihood of dying as the result of natural events such as floods, earthquakes or extreme weather.

The full paper is available here or here.

hazard_map