English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

. Total gaseous mercury (TGM) concentrations were continuously measured at NamCo Station, a remote high-altitude site (4730 m a.s.l.), on the inlandTibetan Plateau, China, from January 2012 to October 2014 using a Tekran2537B instrument. The mean concentration of TGM during the entire monitoringperiod was 1.33±0.24  ng m −3 (mean  ±  standard deviation),ranking it as the lowest value among all continuous TGM measurements reportedin China; it was also lower than most of sites in the Northern Hemisphere.This indicated the pristine atmospheric environment on the inland TibetanPlateau. Long-term TGM at the Nam Co Station exhibited a slight decreaseespecially for summer seasons. The seasonal variation of TGM wascharacterized by higher concentrations during warm seasons and lowerconcentrations during cold seasons, decreasing in the following order: summer( 1.50±0.20  ng m −3 )  >  spring( 1.28±0.20  ng m −3 )  >  autumn( 1.22±0.17  ng m −3 )  >  winter ( 1.14±0.18  ng m −3 ).Diurnal variations of TGM exhibited uniform patterns in different seasons:the daily maximum was reached in the morning (around 2–4 h after sunrise),followed by a decrease until sunset and a subsequent buildup at night,especially in the summer and the spring. Regional surface reemission andvertical mixing were two major contributors to the temporal variations of TGMwhile long-range transported atmospheric mercury promoted elevated TGM duringwarm seasons. Results of multiple linear regression (MLR) revealed thathumidity and temperature were the principal covariates of TGM. Potentialsource contribution function (PSCF) and FLEXible PARTicle dispersion model(WRF-FLEXPART) results indicated that the likely high potential sourceregions of TGM to Nam Co were central and eastern areas of the Indo-GangeticPlain (IGP) during the measurement period with high biomass burning andanthropogenic emissions. The seasonality of TGM at Nam Co was in phase withthe Indian monsoon index, implying the Indian summer monsoon as an importantdriver for the transboundary transport of air pollution onto the inlandTibetan Plateau. Our results provided an atmospheric mercury baseline on theremote inland Tibetan Plateau and serve as new constraint for the assessmentof Asian mercury emission and pollution.

Multi-year monitoring of atmospheric total gaseous mercury at a remote high-altitude site (Nam Co, 4730 m a.s.l.) in the inland Tibetan Plateau region