Table 1 Summary of changes during the Chilean megadrought (hydrological years 2010-2019) and projected megadroughts under scenarios RCP2.6 and RCP8.5
From: Less water from glaciers during future megadroughts in the Southern Andes
Annual | Summer | Annual | ||||||
|---|---|---|---|---|---|---|---|---|
Total Precipitation mm average across glaciers | Mean air temperature °C | Glacier runoff total volume m3∙106 sum across glaciers | Glacier runoff total volume m3∙106 sum across glaciers | Ice melt total volume m3∙106 sum across glaciers | Snowmelt total volume m3∙106 sum across glaciers | Rainfall total volume m3∙106 sum across glaciers | ||
Reference period (2000–2009) | 1849 | −2.3 | 2153 | 1249 | 384 | 1537 | 231 | |
Change | mm % | °C | m3∙106 % | m3∙106 % | m3∙106 % | m3∙106 % | m3∙106 % | |
Chilean megadrought | 2010-2019 | −662 −35.8 | +0.2 | −30.3 −1.4 | −3.4 −0.3 | +453.7 +118.0 | −491.4 −32.0 | +7.4 +3.2 |
Driest year (2019) | −1220 −66.0 | +0.9 | +542.2 +25.2 | +264.4 +21.2 | +1499.7 +390.1 | −920.2 −59.9 | −37.2 −16.1 | |
RCP2.6 megadroughts | 10-year | −390 ± 14 −21.1 ± 1 | +1.4 ± 0.2 | −208.0 ± 94.8 −9.7 ± 4.4 | −432.4 ± 32.2 −34.6 ± 2.6 | −11.9 ± 55.5 −3.1 ± 14.4 | −366.0 ± 28.8 −23.8 ± 1.9 | +170.0 ± 50.5 +73.5 ± 21.8 |
Driest year | −980 ± 122 −53.0 ± 7 | +1.2 ± 0.5 | −583.1 ± 81.9 −27.1 ± 3.8 | −441.1 ± 101.3 −35.3 ± 8.1 | +221.1 ± 178.0 +57.5 ± 46.3 | −856.1 ± 134.4 −55.7 ± 8.7 | +51.9 ± 35.4 +22.4 ± 15.3 | |
RCP8.5 megadroughts | 10-year | −720 ± 190 −38.9 ± 10 | +4.5 ± 0.4 | −418.9 ± 237.4 −19.5 ± 11.0 | −593.8 ± 75.2 −47.6 ± 6.0 | +141.5 ± 40.2 +36.8 ± 10.5 | −814.2 ± 140.2 −53.0 ± 9.1 | +253.8 ± 89.8 +109.7 ± 38.8 |
Driest year | −1119 ± 197 −60.5 ± 11 | +4.4 ± 0.3 | −743.9 ± 244.6 −34.6 ± 11.4 | −523.9 ± 146.3 −42.0 ± 11.7 | +224.7 ± 95.5 +58.5 ± 24.8 | −1094.9 ± 111.9 −71.2 ± 7.3 | +126.3 ± 71.9 +54.6 ± 31.1 | |
