Correction to “Seasonal variation of biogenic VOC emissions above a mixed hardwood forest in northern Michigan”

2004 ◽  
Vol 31 (2) ◽  
Author(s):  
T. Karl ◽  
A. Guenther ◽  
C. Spirig ◽  
A. Hansel ◽  
R. Fall
2003 ◽  
Vol 30 (23) ◽  
pp. n/a-n/a ◽  
Author(s):  
T. Karl ◽  
A. Guenther ◽  
C. Spirig ◽  
A. Hansel ◽  
R. Fall

Atmosphere ◽  
2018 ◽  
Vol 9 (5) ◽  
pp. 179 ◽  
Author(s):  
Satoru Chatani ◽  
Motonori Okumura ◽  
Hikari Shimadera ◽  
Kazuyo Yamaji ◽  
Kyo Kitayama ◽  
...  

2021 ◽  
Author(s):  
Letizia Abis ◽  
Carmen Kalalian ◽  
Bastien Lunardelli ◽  
Tao Wang ◽  
Liwu Zhang ◽  
...  

Abstract. We analysed the biogenic volatile organic compounds (BVOC) emissions from rapeseed leaves litter and their potential to create secondary organic aerosols (SOA) under three different conditions i.e., (i) in presence of UV light irradiation; (ii) in presence of ozone, and (iii) with both ozone and UV light. These experiments have been performed in a controlled atmospheric simulation chamber containing leaves litter samples, where BVOC and aerosol number concentrations have been measured for 6 days. Our results show that BVOC emission profiles were affected by UV light irradiation, which increased the summed BVOC emissions compared to the experiment with solely O3. Furthermore, the diversity of emitted VOCs from the rapeseed litter increased also in presence of UV light irradiation. SOA formation was observed when leaves litter were exposed to both UV light and O3, indicating a potentially large contribution to particle formation or growth at local scales. To our knowledge, this study investigates for the first time the effect of UV irradiation and O3 exposure on both VOC emissions and SOA formation for leaves litter samples. A detailed discussion about the processes behind the biological production of the most important VOC is proposed.


2014 ◽  
Vol 9 (1) ◽  
pp. 014006 ◽  
Author(s):  
Beth A Drewniak ◽  
Peter K Snyder ◽  
Allison L Steiner ◽  
Tracy E Twine ◽  
Donald J Wuebbles

1995 ◽  
Vol 25 (2) ◽  
pp. 234-243 ◽  
Author(s):  
B.R. Dhamala ◽  
M.J. Mitchell

Sulfur biogeochemistry of a northern hardwood forest soil in Bear Brook Watershed, Maine, was studied utilizing 35S in situ. The objectives of study were to characterize different S pools, their vertical distribution, and seasonal variation. Soil cores were used at the field and treated with 35SO42−. The distribution of total and C-bonded S followed a typical pattern of decreasing concentration with soil depth. More than 86% of total 35S added was retained by the soil. Most of the 35S activity was in the organic S pool (up to 73 and 20% of total 35S in C-bonded S and ester-sulfate forms, respectively) in both the forest floor and the mineral soil horizons. Ester sulfate increased with depth from 5.3 to 25.5% of total S. During the summer the relative importance of mineralization to immobilization decreased. Inorganic sulfate was the smallest S pool. However, higher specific activity and turnover rate of the inorganic 35SO42− pool than organic 35S pool indicated that S concentration and solution flux were more regulated by abiotic (adsorption and desorption) than biotic (mineralization and immobilization) processes.


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