20.06.2013 Views

DevelopmentsinEarthSurfaceProcesses ...

DevelopmentsinEarthSurfaceProcesses ...

DevelopmentsinEarthSurfaceProcesses ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Climate and Geomorphologic-related Disasters in Latin America 13<br />

30N<br />

20N<br />

10N<br />

EQ<br />

10S<br />

20S<br />

30S<br />

40S<br />

50S<br />

DJF Rainfall<br />

60S<br />

130W120W110W100W 90W 80W 70W 60W 50W 40W 30W 20W<br />

30N<br />

20N<br />

10N<br />

EQ<br />

10S<br />

20S<br />

30S<br />

40S<br />

50S<br />

JJA Rainfall<br />

60S<br />

130W120W110W100W 90W 80W 70W 60W 50W 40W 30W 20W<br />

Figure 1.7 ENSO impacts on rainfall. El Nin‹ o minus La Nin‹ a rainfall (mm/day) in (a)<br />

December^January^February, and (b) June^July^August. Data from the Global<br />

Precipitation Climatology Project (1979^2008).<br />

events, cold events and neutral years. They found that the tropical rivers in central<br />

and western South America (Amazon and Orinoco) showed a tendency of slightly<br />

increased stream flows during cold events, but suffered very little impact from warm<br />

events. The tropical rivers in northeastern South America (the Tocantins and San<br />

Francisco) showed the opposite behavior, with decreased stream flows during cold<br />

12<br />

8<br />

4<br />

2<br />

1<br />

0.5<br />

–0.5<br />

–1<br />

–2<br />

–4<br />

–8<br />

–12<br />

12<br />

8<br />

4<br />

2<br />

1<br />

0.5<br />

–0.5<br />

–1<br />

–2<br />

–4<br />

–8<br />

–12

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!