Deposition of reactive nitrogen during the Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) study.
Increases in reactive nitrogen deposition are a growing concern in the U.S. Rocky Mountain west. The Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) study was designed to improve understanding of the species and pathways that contribute to nitrogen deposition in Rocky Mountain National Park (RMNP). During two 5-week field campaigns in spring and summer of 2006, the largest contributor to reactive nitrogen deposition in RMNP was found to be wet deposition of ammonium (34% spring and summer), followed by wet deposition of nitrate (24% spring, 28% summer). The third and fourth most important reactive nitrogen deposition pathways were found to be wet deposition of organic nitrogen (17%, 12%) and dry deposition of ammonia (14%, 16%), neither of which is routinely measured by air quality/deposition networks operating in the region. Total reactive nitrogen deposition during the spring campaign was determined to be 0.45 kg ha(-1) and more than doubled to 0.95 kg ha(-1) during the summer campaign.
Beem
Katherine B
KB
Atmospheric Science Department, Colorado State University, 1371-Campus Delivery, Fort Collins, CO 80523, USA.
Raja
Suresh
S
Schwandner
Florian M
FM
Taylor
Courtney
C
Lee
Taehyoung
T
Sullivan
Amy P
AP
Carrico
Christian M
CM
McMeeking
Gavin R
GR
Day
Derek
D
Levin
Ezra
E
Hand
Jenny
J
Kreidenweis
Sonia M
SM
Schichtel
Bret
B
Malm
William C
WC
Collett
Jeffrey L
JL
D000393:Air Pollutants / Q000032:analysis*; D003120:Colorado; D004784:Environmental Monitoring; D009584:Nitrogen / Q000032:analysis*; D012621:Seasons; D013455:Sulfur / Q000032:analysis*
D000393:Air Pollutants; D013455:Sulfur; D009584:Nitrogen