Global tropospheric OH concentrations in the past four decades inferred from surface network and satellite trace gas observations

Ronald G. Prinn, Jian-Xiong Sheng, Christina M. Harth, Paul B. Krummel, Chris Rene Lunder, Jens Muhle, Simon Joseph Odoherty, Peter K. Salameh, Ray F. Weiss, Dickon Young, Patrick Sheese, Kaley A. Walker