Use of the Spatial Analogy in Climate Change Research Horváth, Levente – Gaál, Márta – Erdélyi, Éva Debrecen 2006
Analogue scenarios Observed or reconstructed information on climate that might serve as an analogue for future climatic conditions taken from: Other regions - spatial analogues Previous time periods - temporal analogues
Spatial analogues Present-day climate in another region that resembles the future climate anticipated in the study area
Spatial analogues Advantages: Testing system sensitivity Identifying key climate thresholds Disadvantages: Not related to greenhouse gas forcing Often physically implausible No appropriate analogues may be available
Materials and methods GCM scenarios American Geophysical Fluid Dynamics Laboratory GFDL5564, GFDL2534 United Kingdom Meteorological Office UKHI, UKLO (equilibrium climate change experiment) UKTR (transient climate change experiment) IPCC CRU Global Climate Dataset consists of a multi-variate 0.5º latitude by 0.5º longitude resolution mean monthly ( ) climatology for global land area (we use the temperature and the precipitation)
Materials and methods We used precipitation sums and temperature averages for periods of agricultural importance (Nov.-Feb., March-May, June-Aug., Sept.-Oct., 4-4 data) To compare these climatic datas to the the downscaled scenarios for Debrecen take these climate indices, as variables, were used to calculate Euclidean distances To interpret the results we used GIS methods, using the ArcGIS program
And now, a lot of maps
IPCC CRU dataset
Similarity of temperature for the BASE scenario
Similarity of precipitation for the BASE scenario
Similarity of temperature for the GFDL2534 scenario
Similarity of precipitation for the GFDL2534 scenario
Similarity of temperature for the GFDL5564 scenario
Similarity of precipitation for the GFDL5564 scenario
Similarity of temperature for the UKHI scenario
Similarity of precipitation for the UKHI scenario
Similarity of temperature for the UKLO scenario
Similarity of precipitation for the UKLO scenario
Similarity of temperature for the UKTR scenario
Similarity of precipitation for the UKTR scenario
And now, 2 videos BASE GFDL5564