Andy J Climate Change Models Can Guide Our Adaptation Strategies Supagro Nov 2009
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How models can guide our adaptation actions, presented in Supagro on 13th november, 2009 in Montpellier, by Andy Jarvis.
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Andy J Climate Change Models Can Guide Our Adaptation Strategies Supagro Nov 2009
- 1. Climate change and agriculture: How models can guide our adaptation strategies Andy Jarvis, Julian Ramirez, Edward Guevara, Peter Laderach and Emmanuel Zapata Program Leader, Decision and Policy Analysis, CIAT
- 5. Sources of Agricultural Greenhouse Gases excluding land use change Mt CO2-eq Source: Cool farming: Climate impacts of agriculture and mitigation potential, Greenpeace, 07 January 2008
- 6. How can we be sure that it is changing?
- 9. Arctic Ice is Melting
- 13. So, what do they say?
- 17. BCCR-BCM2.0 CCCMA-CGCM2 CCCMA-CGCM3.1 T47 CCCMA-CGCM3.1-T63 CNRM-CM3 IAP-FGOALS-1.0G GISS-AOM GFDL-CM2.1 GFDL-CM2.0 CSIRO-MK3.0 IPSL-CM4 MIROC3.2-HIRES MIROC3.2-MEDRES MIUB-ECHO-G MPI-ECHAM5 MRI-CGCM2.3.2A NCAR-PCM1 UKMO-HADCM3
- 18. BCCR-BCM2.0 CCCMA-CGCM2 CCCMA-CGCM3.1 T47 CCCMA-CGCM3.1-T63 CNRM-CM3 IAP-FGOALS-1.0G GISS-AOM GFDL-CM2.1 GFDL-CM2.0 CSIRO-MK3.0 IPSL-CM4 MIROC3.2-HIRES MIROC3.2-MEDRES MIUB-ECHO-G MPI-ECHAM5 MRI-CGCM2.3.2A NCAR-PCM1 UKMO-HADCM3
- 20. The Impacts on Crop Suitability
- 23. Average change in suitability for all crops in 2050s
- 24. Winners and losers Number of crops with more than 5% loss Number of crops with more than 5% gain
- 25. Message 1 Global suitability for agriculture reduces moderately, but problems of food distribution are exacerbated
- 26. But what about land-use and biodiversity distribution in 2050?
- 28. Results: protected areas per region Current extent of in situ conservation Global biodiversity currently well conserved
- 34. Message 2 There will be greater pressure on land resources for multiple uses, as currently non-arable land becomes arable, and as we face massive biodiversity loss
- 35. Minimising impacts: Breeding for beans ( Phaseolus vulgaris L.) towards 2020
- 36. How are beans standing up currently? Parameters determined based on statistical analysis of current bean growing environments from the Africa and LAC Bean Atlases.
- 37. What will likely happen? 2020 – A2 2020 – A2 - changes
- 38. GCM Uncertainties COEFFICIENT OF VARIATION PERCENT OF MODELS WITH AGREED DIRECTION
- 40. Technology options: breeding for drought and waterlogging tolerance Some 22.8% (3.8 million ha) would benefit from drought tolerance improvement to 2020s Drought tolerance Waterlogging tolerance
- 41. Technology options: breeding for heat and cold tolerance Cold tolerance Heat tolerance Some 42.7% (7.2 million ha) would benefit from heat tolerance improvement to 2020s
- 42. Impacts on production of cassava
- 44. Impact of climate change on cassava suitable environments Global cassava suitability will increase 5.1% on average by 2050… but many areas of Latin America suffer negative impacts
- 45. …… .and for Latin America? Drought or flooding tolerance 30% of current cassava fields would benefit from enhanced drought or flooding tolerance 1.6m Ha still suffering climatic constraint 2.23m Ha of current production 2.1m Ha of new land would become suitable for cassava
- 46. …… .and for Latin America? Heat or cold tolerance 27% of current cassava fields would benefit from enhanced cold or heat tolerance 2.23m Ha of current production 2.2m Ha of new land would become suitable for cassava
- 47. Pest and Disease Impacts
- 48. Impacts on whitefly to 2020
- 49. Message 3 Global impacts can be addressed in many cases through existing diversity, or through crop improvement, but we must start planning now
- 53. Adaptation Options Management New markets Alternatives to coffee
- 54. Message 4 Locally, some significant upheavals could occur in terms of economies, cultures, and land-use patterns
- 55. But it is worse in Central America
- 61. So what do we do?
- 63. [email_address]
Hinweis der Redaktion
- What we need - mythic solution sequester carbon, reduce soil loss, stop slash and burn, reduce emissions - food security, stop pollution etc.
- How are we going to estimate the effects of climate change on agriculture unless we’re going to wait for it to happen? Past changes are not really a good estimator. The little ice age starting in 1450 or thereabouts was a major event, completely changing the life styles and agriculture in Europe. It is piddling compared with what we are likely to see in the next 20 to 50 years. We must therefore rely on modeling situations that we have never before seen.