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Pergamon Atmospheric Environment Vol. 29, No. 21, pp. 3037-3042, 1995 Copyright 0 1995 Elsevier Science Ltd
 

Summary: Pergamon Atmospheric Environment Vol. 29, No. 21, pp. 3037-3042, 1995
Copyright 0 1995 Elsevier Science Ltd
Printed in Great Britain. All rights reserved
1352-2310/95 $9.50 + 0.00
1352-2310(95)00089-5
MEASUREMENTS OF NITRIC OXIDE FLUX FROM AN
UPPER COASTAL PLAIN, NORTH CAROLINA
AGRICULTURAL SOIL
VINEY P. ANEJA, WAYNE P. ROBARGEt and BENNY D. HOLBROOK
Departments of Marine, Earth and Atmospheric Sciences and tSoi1 Science, North Carolina State
University, Raleigh, NC 2769558208, U.S.A.
(First received 3 December 1993 and infinal form 20 December 1994)
Abstract-Agricultural soil NO flux measurements (using a dynamic chamber technique) were made from
18 August to 1 September 1993 in the Upper Coastal Plain region of North Carolina in an effort to
determine the role of natural emissions of NO on rural atmospheric photochemistry. Overall average NO
flux rates increased proportionally to the level of applied fertilizer nitrogen in the agricultural soil. The
soybean, cotton, and corn field measurements revealed an average NO flux of 1.79 (range
- 1.0-6.9)ngNm-2s-1;3.77(range -0.1-38.0)ngNm-Zs-`; and 8.05(range - 0.5-52.8) ngNm-`sK1
respectively. There was a positive correlation between NO concentration near the soil surface ( _ 50 cm)
and NO flux A significant negative correlation between NO flux and ambient 0, concentration, however,

  

Source: Aneja, Viney P. - Department of Marine, Earth and Atmospheric Sciences, North Carolina State University

 

Collections: Environmental Sciences and Ecology; Geosciences