¥Tree
Rings
¥Ice
cores (air bubbles, isotopes, dust, pH)
¥Corals
(ocean temp., ppt, salinity, sea level, storm incidence, freshwater volume)
¥Ocean
sediments (water temp, salinity, DO, nearby continental ppt, strength and direction of winds, nutrient
availability)
¥Boreholes
(Figure 3.7)
¥Combined
proxy climate record (Figure 3.8)