Ecdat (version 0.4-2)

coolingFromNuclearWar: Global cooling from a nuclear war

Description

Average surface temperature changes world wide and in the Northern Hemisphere 3 and 10 years after the injections of 5, 50 and 150 Tg (teragrams = millions of metric tons) of smoke into the upper troposphere, per Robock, Oman, and Stenchikov (2007).

These numbers are relative to the average for 1925-1975, which explains why the numbers are positive with smoke = 0.

Usage

data(coolingFromNuclearWar)

Format

A dataframe containing :

smoke

teragrams = millions of metric tons

dC3g, dC10g, dC3n, dC10n

average change in surface temperature 3 and 10 years after injection of smoke into the upper troposphere globally (g) or in the Northern Hemisphere (n) in degrees Celsius.

Examples

data(coolingFromNuclearWar)
matplot(coolingFromNuclearWar[, 'smoke'], 
    coolingFromNuclearWar[, 2:5], type='l')
(linFit <- lm(cbind(dC3g, dC10g, dC3n, dC10n)~smoke, 
      coolingFromNuclearWar))
      
# total change 
dC <- as.matrix(coolingFromNuclearWar[, 2:5] - 
        rep(unlist(coolingFromNuclearWar[1, -1]), e=4))
(linFit0 <- lm(dC~smoke, coolingFromNuclearWar))
summary(linFit0)