Impacts on Food/Water/Health

Question 1

What is the proportion of income paid for food by the Global South, compared to developed nations

Answer 1

65% compared to 10%

Question 2

How much are maize and sorghum yields projected to decline in West Africa and what’s the reference

Answer 2

5 and 8%, UNFCCC 2020

Question 3

How will global agricultural yields change due to climate change, and specifically for Europe (reference)

Answer 3

Higher temperatures and higher CO2 availability is typically a net positive.

Generally, yields will decline in the tropics, and increase at higher latitudes with a lengthened growing season and better conditions for growth.
Northern Europe, av 5% increase
Southern Europe, 12% decrease (EU, 2020)

Question 4

How will climate change impact human health: list 4

Answer 4

extreme weather
disease
pollution
more heat deaths than cold deaths as minimum temps critical during heatwave, if this rises then by 2050 more heat deaths
water/food borne pathogens

Question 5

Per degree of warming, how much more capacity does the atmosphere have for water vapour

Answer 5

6.5%

Question 6

what is expected to happen to water supplies

Answer 6

10-40% increase in water availability at high latitudes and tropics, 10-30% decrease in mid latitudes.
drought regions to get worse, high rain/flood regions to get worse

Question 7

how will the cryosphere affect water supplies (reference)

Answer 7

1/6 world pop lives in major mountain ranges dependent of runoff and glacial meltwater for supplies, climate change causing massive retreat globally, population displacement among risks (Seltzer, 2019)

Question 8

What is the range at which rainfall-producing weather systems recruit moisture, therefore drying up surrounding lands

Answer 8

3-5x their own radius, can cause drought and dry spells