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Radiative constraints on the minimum atomic oxygen concentration in the mesopause region
Author(s) -
Mlynczak Martin G.,
Hunt Linda A.,
Marshall B. Thomas,
Mertens Christopher J.,
Russell James M.,
Siskind David,
Thompson R. Earl,
Gordley Larry L.
Publication year - 2013
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/grl.50725
Subject(s) - mesopause , oxygen , atmospheric sciences , radiative transfer , mesosphere , atmosphere (unit) , atomic oxygen , environmental science , energy budget , ozone , atomic physics , physics , computational physics , meteorology , thermodynamics , stratosphere , quantum mechanics
Atomic oxygen [O] plays a fundamental role in the photochemistry and energy budget of the terrestrial mesopause region (80–100 km). [O] is difficult to measure directly and is typically inferred at night from measurements of hydroxyl [OH] or molecular oxygen [O 2 ] emissions. During the day, measurements of ozone [O 3 ] concentration are used to infer [O]. These inferences carry significant uncertainties [ Mlynczak et al ., 2013a]. Recently, Mlynczak et al . [2013b] have used energy balance principles to set an upper limit on the annual global mean [O] concentration in the mesopause region. In this paper, we use night measurements of OH emission to set a lower limit on the global annual mean atomic oxygen concentration. These independent, radiatively constrained values of the maximum and minimum atomic oxygen concentration also place constraints on the magnitude of dynamical processes in the annual global mean energy budget of the mesopause region.