Comment on “Cosmic-ray-driven reaction and greenhouse effect of halogenated molecules: culprits for atmospheric ozone depletion and global climate change”

TY - JOUR

T1 - Comment on “Cosmic-ray-driven reaction and greenhouse effect of halogenated molecules

T2 - culprits for atmospheric ozone depletion and global climate change”

AU - Nuccitelli, Dana

AU - Cowtan, Kevin

AU - Jacobs, Peter

AU - Richardson, Mark

AU - Way, Robert G.

AU - Blackburn, Anne-Marie

AU - Stolpe, Martin B.

AU - Cook, John

PY - 2014/5/20

Y1 - 2014/5/20

N2 - Lu (2013) (L13) argued that solar effects and anthropogenic halogenated gases can explain most of the observed warming of global mean surface air temperatures since 1850, with virtually no contribution from atmospheric carbon dioxide (CO2) concentrations. Here we show that this conclusion is based on assumptions about the saturation of the CO2-induced greenhouse effect that have been experimentally falsified. L13 also confuses equilibrium and transient response, and relies on data sources that have been superseeded due to known inaccuracies. Furthermore, the statistical approach of sequential linear regression artificially shifts variance onto the first predictor. L13's artificial choice of regression order and neglect of other relevant data is the fundamental cause of the incorrect main conclusion. Consideration of more modern data and a more parsimonious multiple regression model leads to contradiction with L13's statistical results. Finally, the correlation arguments in L13 are falsified by considering either the more appropriate metric of global heat accumulation, or data on longer timescales.

AB - Lu (2013) (L13) argued that solar effects and anthropogenic halogenated gases can explain most of the observed warming of global mean surface air temperatures since 1850, with virtually no contribution from atmospheric carbon dioxide (CO2) concentrations. Here we show that this conclusion is based on assumptions about the saturation of the CO2-induced greenhouse effect that have been experimentally falsified. L13 also confuses equilibrium and transient response, and relies on data sources that have been superseeded due to known inaccuracies. Furthermore, the statistical approach of sequential linear regression artificially shifts variance onto the first predictor. L13's artificial choice of regression order and neglect of other relevant data is the fundamental cause of the incorrect main conclusion. Consideration of more modern data and a more parsimonious multiple regression model leads to contradiction with L13's statistical results. Finally, the correlation arguments in L13 are falsified by considering either the more appropriate metric of global heat accumulation, or data on longer timescales.

KW - Chlorofluorocarbons

KW - Global warming

KW - Global cooling

KW - Global heat accumulation

KW - Global climate change

KW - Climate change

U2 - 10.1142/S0217979214820037

DO - 10.1142/S0217979214820037

M3 - Comment/debate

SN - 0217-9792

VL - 28

JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

IS - 13

M1 - 1482003

ER -