Comment on "Missing gas-phase source of HONO inferred from Zeppelin measurements in the troposphere"

Ye CX; Zhou XL; Pu D; Stutz J; Festa J; Spolaor M; Cantrell C; Mauldin RL; Weinheimer A; Haggerty J

Science, Vol.348, No.6241, ---, 2015

DOI10.1126/science.aaa1992 Export Citation

Comment on "Missing gas-phase source of HONO inferred from Zeppelin measurements in the troposphere"

Ye CX, Zhou XL, Pu D, Stutz J, Festa J, Spolaor M, Cantrell C, Mauldin RL, Weinheimer A, Haggerty J

Li et al. (Reports, 18 April 2014, p. 292) proposed a unity nitrous acid (HONO) yield for reaction between nitrogen dioxide and the hydroperoxyl-water complex and suggested a substantial overestimation in HONO photolysis contribution to hydroxyl radical budget. Based on airborne observations of all parameters in this chemical system, we have determined an upper-limit HONO yield of 0.03 for the reaction.