hi Flashcards
how is the water cycle river regimes changing due to a changing carbon cycle
river regime is the annual variation in discharge or flow at a particular point
this can be influenced by climate
Increased temperatures mean more snow and ice melt and an increase and more intense precipitation
permafrost will also thaw and add to arctic rivers
>rivers will dry up in amazon where preciptation is reduced or less effective due to higher transpiration rates
how is the water cycle precipitation patterns changing
> precipitation pattern»_space;» existing weather pattern get stronger (wet places will get wetter ect)
in higher lattitudes and increased desert expansion
more flash flooding due to intense flooding which will effect people
how is the water cycles water stores changing due to carbon cycle change
cryosphere has been losing mass as ice sheets and glaciers melt
>arctic temperature have risen twice as much last 20 years
>this will effect ocean currents, air ciculation and sea level rise and flooding
»»>antarctic ice shelves like Ronne and Ross will melt adding more freshwater to southern oceans and therfore changing density and convection currents of ocean
ALSO decrease in smaller/ temperate glaciers will stop water sources for many who live in alpine regions
how will impacts to water cycle effect Yukon
> more evaporation and atmospheric water vapour
snowfall precipitation has decreased between 1950 and 1998 and more falls as rain
snow melt begins earlier in the spring which has chnaged river regimes so there is an earlier peak flow
total ice area has shrunk by 22% since 1958
soil absorbing more water as permafrost thaws
inflows to Yukon river increased by 39% due to these processes
more positive feedback loops are created
how much has total ice area has shrunk by since 1958 in Yukon
22%
how much have inflows to yukon river increased by since 1958 due to increased evaporation and rainfall
39%
