TY - JOUR
T1 - Field survey of trans-boundary air pollution with high time resolution at coastal sites on the sea of japan during winter in Japan
AU - Aikawa, Masahide
AU - Hiraki, Takatoshi
AU - Tamaki, Motonori
AU - Kasahara, Mikio
AU - Kondo, Akira
AU - Uno, Itsushi
AU - Mukai, Hitoshi
AU - Shimizu, Atsushi
AU - Murano, Kentaro
N1 - Funding Information:
This research was funded by the Japan Environment Ministry’s Global Environmental Research Fund. We utilized the Support System for Evaluation of Troposphere Monitoring Data (CGER-GMET) in CGER-NIES for the backward trajectory calculations. In addition, this study was supported in part by funds from the Grant-in-Aid for Scientific Research in Priority Areas under Grant No. 14048213 from Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. Moreover, this study was supported in part by funds from the Ministry of Environment titled by “Development of the degradation diagnostic technique of the plural function of natural environment and the integrated model for effect evaluation of recovery measures for a basin”.
PY - 2006/11
Y1 - 2006/11
N2 - An intensive field survey, with 6-h measurement intervals, of concentrations of chemical species in particulate matter and gaseous compounds was carried out at coastal sites on the Sea of Japan during winter. The concentration variation of SO2(g) and HNO3(g) were well correlated, whereas the NH3(g) concentration variation had no correlation with those of SO2 (g) and HNO3(g). The NH4+ (p)/ non-sea-salt- (nss-)SO4 2-(p) ratio in particulate matter was mainly affected by the location of the sampling site. One or more concentration peaks of nss-Ca2+ for survey period were observed. Backward trajectories analyses for the highest nss-Ca2+ concentration peaks showed some inconsistency in pathways. We consider that insufficient mixing of the atmosphere and/or insufficient time for the transported air pollutants to react with those discharged locally are the most likely explanations for the discrepancies between the measured products [HNO3][NH3] and the calculated values.
AB - An intensive field survey, with 6-h measurement intervals, of concentrations of chemical species in particulate matter and gaseous compounds was carried out at coastal sites on the Sea of Japan during winter. The concentration variation of SO2(g) and HNO3(g) were well correlated, whereas the NH3(g) concentration variation had no correlation with those of SO2 (g) and HNO3(g). The NH4+ (p)/ non-sea-salt- (nss-)SO4 2-(p) ratio in particulate matter was mainly affected by the location of the sampling site. One or more concentration peaks of nss-Ca2+ for survey period were observed. Backward trajectories analyses for the highest nss-Ca2+ concentration peaks showed some inconsistency in pathways. We consider that insufficient mixing of the atmosphere and/or insufficient time for the transported air pollutants to react with those discharged locally are the most likely explanations for the discrepancies between the measured products [HNO3][NH3] and the calculated values.
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U2 - 10.1007/s10661-005-9165-6
DO - 10.1007/s10661-005-9165-6
M3 - Article
C2 - 16773227
AN - SCOPUS:33750608039
SN - 0167-6369
VL - 122
SP - 61
EP - 79
JO - Environmental Monitoring and Assessment
JF - Environmental Monitoring and Assessment
IS - 1-3
ER -