Dr. Drew Shindell
Interactive Graphics Showing the Climate, Health and Agricultural Benefits of Methane and Black Carbon Emissions Control Measures
Interactive graphics associated with the journal paper Simultaneously Mitigating Near-Term Climate Change and Improving Human Health and Food Security, by Shindell et al., Science, 2012.
Global Mean Temperature Change
We examined the impact of methane and BC emissions control measures on global mean temperature. Figure 1 in the paper shows observed temperatures through 2009 and projected temperatures thereafter under various scenarios, all relative to the 1890-1910 mean. In that figure, results for future scenarios are presented as the central values while the rightmost bars give 2070 ranges including uncertainty in radiative forcing and climate sensitivity. The caption notes that "A portion of the uncertainty is systematic, so that overlapping ranges do not mean there is no difference". The dynamic content presented here illustrates that point by showing separately the projected temperature ranges for a given choice of climate sensitivity (with uncertainty due solely to radiative forcing). Note that the radiative forcing also contains some systematic components, but the importance of those components varies across scenarios so is not easily separable. [Figure credit: Eli Kintisch and Martyn Green of Science magazine]
National Level Impacts - World Maps
We also examined the national level impacts of the methane and BC measures on climate, human health, and crop yields. Figure S5 shows the geographic pattern using maps of the world. The interactive versions of the figures allow viewers to obtain the numerical value for any individual country and impact, or even to download all numerical values.
National Level Impacts - Circle Area Plots
Impacts are also shown for each nation as circles where the area of the circles is proportional to the size of the impact (Figure 4 in the paper). The interactive versions of the figures allow viewers to obtain the numerical value for any individual country and impact, to select a particular country from an alphabetical list, or even to download all numerical values.
National Level Agricultural Impacts - Crop by Crop Circle Area Plots
Figure S6 breaks down the national level crop yield impacts shown in Figure 4 into the yield changes for individual staple crops. Impacts are presented for wheat, rice, maize (corn) and soy in an interactive format identical to that used for the dynamics versions of Figure 4.