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Importance of dew in controlling the air‐surface exchange of HONO in rural forested environments
Author(s) -
He Yi,
Zhou Xianliang,
Hou Jian,
Gao Honglian,
Bertman Steven B.
Publication year - 2006
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 - 10.1029/2005gl024348
Subject(s) - dew , environmental science , sink (geography) , atmospheric sciences , atmosphere (unit) , canopy , dew point , hydrology (agriculture) , meteorology , geology , ecology , geography , condensation , cartography , geotechnical engineering , biology
Mechanisms regarding formation and loss of nitrous acid (HONO) in the rural atmosphere are not well understood. Results of field observations and laboratory experiments implicate the importance of dew in controlling the surface‐atmosphere exchange of HONO. Dew water, abundantly available on ground surfaces, especially on canopy surfaces in forested regions, during summer and autumn nights, serves as a sink and a temporary reservoir of atmospheric HONO and as a source in the morning when the dew droplets evaporate.