edu.ucar.opensky::articles:10504 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T13:36:14.413062 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d73t9hrt Measurements of atmospheric mercury in Shanghai during September 2009 2011-04-27T00:00:00Z publication https://n2t.org/ark:/85065/d73t9hrt https://doi.org/10.5194/acpd-10-30279-2010 Friedli, Hans author Arellano, Avelino author Geng, F. author Cai, C. author Pan, L. author UCAR/NCAR - Library publisher We report on total gaseous mercury (TGM) measurements made in Pudong, Shanghai in August/September 2009. The average TGM was 2.7 ± 1.7 ng m⁻³. This represents about 90% of the total atmospheric mercury. This is an underestimate for an annual-mean concentration because the meteorology in September favored predominantly easterly oceanic air, replaced in other seasons by airflow from industrial areas. The observed TGM follows a pattern seen in other cities around the world: a background elevated over mean hemispheric background (1.5 ng m⁻³), and pollution plumes of different magnitude and duration, interspersed with very sharp spikes of high concentration (60 ng m⁻³). The September 2009 Shanghai measurements are lower than those reported for most other Chinese cities and Mexico City, and similar to concentrations found in some Asian and in North American cities. Such comparisons are tenuous because of differences in season and year of the respective measurements. Our results should not be used for regulatory purposes. We find that the observed TGM are most likely coming from coal fired power plants, smelters and industrial sources, based on its high correlation with NOx, SO₂, CO and wind directions. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright Author(s) 2011. This work is distributed under the Creative Commons Attribution 3.0 License None eng geoscientificInformation