scholarly journals Atmospheric deposition and lake chemistry trends at a high mountain site in the eastern Alps

2000 ◽  
Vol 59 (1) ◽  
pp. 61 ◽  
Author(s):  
Danilo TAIT ◽  
Bertha THALER
Keyword(s):  
Atmospheric Deposition ◽  
Eastern Alps ◽  
High Mountain ◽  
Lake Chemistry ◽  
Mountain Site

Lake Superior Atmospheric Wet Deposition 1980-1983

1987 ◽  
Vol 22 (3) ◽  
pp. 365-376
Author(s):  
C. H. Chan ◽  
L. H. Perkins
Keyword(s):  
Atmospheric Deposition ◽  
Wet Deposition ◽  
Major Ions ◽  
Lake Superior ◽  
Relative Accuracy ◽  
Lake Chemistry ◽  
Total Load ◽  
Wet Precipitation ◽  
Percentage Basis ◽  
Nitrogen Loadings

Abstract Wet deposition estimates were computed from monthly wet precipitation samples collected in the Lake Superior Basin. Sulphate and nitrogen loadings from wet precipitation corresponded to 142 and 40 thousand tonnes per year. On a percentage basis, wet deposition of sulphate and nitrogen accounted for 21% and 54%, respectively, of the total load. Atmospheric sources for other major ions ranged from 1 to 10%. Atmospheric deposition at the eastern end of Lake Superior was higher than the western end of the Basin. The relative accuracy of these estimates were examined in relation to the changes in lake chemistry in Lake Superior from 1973 to 1983.

Effects of climate and atmospheric deposition on a boreal lake chemistry: A synthesis of 36 years of monitoring data

2021 ◽  
Vol 758 ◽  
pp. 143639 ◽  
Author(s):  
Charles Marty ◽  
Louis Duchesne ◽  
Suzanne Couture ◽  
Christian Gagnon ◽  
Daniel Houle
Keyword(s):  
Atmospheric Deposition ◽  
Monitoring Data ◽  
Lake Chemistry ◽  
Boreal Lake

Characterization of aerosol acidity at a high mountain site in central eastern China

2012 ◽  
Vol 51 ◽  
pp. 11-20 ◽  
Author(s):  
Yang Zhou ◽  
Likun Xue ◽  
Tao Wang ◽  
Xiaomei Gao ◽  
Zhe Wang ◽  
...  
Keyword(s):  
Eastern China ◽  
High Mountain ◽  
Aerosol Acidity ◽  
Mountain Site ◽  
Central Eastern

scholarly journals Characterization of PM1-Bound Metallic Elements in the Ambient Air at a High Mountain Site in Northern China

2018 ◽  
Vol 18 (12) ◽  
pp. 2967-2981
Author(s):  
Jun-Jie Yue ◽  
Roberta Palmiero ◽  
Yang-Yang Han ◽  
Yan Wang ◽  
Qian-Qian Li ◽  
...  
Keyword(s):  
Northern China ◽  
Ambient Air ◽  
High Mountain ◽  
Metallic Elements ◽  
Mountain Site

PM 1 variability and transport conditions between an urban coastal area and a high mountain site during the cold season

2015 ◽  
Vol 118 ◽  
pp. 127-134 ◽  
Author(s):  
J.F. Nicolás ◽  
N. Galindo ◽  
E. Yubero ◽  
J. Crespo ◽  
R. Soler
Keyword(s):  
Coastal Area ◽  
Cold Season ◽  
High Mountain ◽  
Mountain Site

Influence of NPF events on the CCN concentration at a high-altitude site in southern Europe

2021 ◽  
Author(s):  
Fernando Rejano Martínez ◽  
Gloria Titos Vela ◽  
Juan Andrés Casquero-Vera ◽  
Hassan Lyamani ◽  
Elisabeth Andrews ◽  
...  
Keyword(s):  
High Altitude ◽  
Sierra Nevada ◽  
Cloud Condensation Nuclei ◽  
Aerosol Particles ◽  
Chem Phys ◽  
Aerosol Size Distribution ◽  
High Mountain ◽  
Type I ◽  
Scientific Goal ◽  
Mountain Site

<p>The Cloud Condensation Nuclei (CCN) budget, the aerosol particles population that could become cloud droplets, can be influenced by primary aerosol particles emitted by different sources (anthropogenic or biogenic) or by secondary particles that have undergone growth processes or chemical transformations. Aerosol particles originated by nucleation of precursor gases in the atmosphere have been identified as an important source of CCN particles. The influence of New Particle Formation (NPF) events to CCN concentrations is highly dependent on the environment where it takes place. Specifically, the study of the influence of NPF events on CCN concentration at high-altitude sites, where atmospheric conditions favor the formation of clouds, is a very interesting scientific goal.</p><p> </p><p>This study presents CCN measurements combined with aerosol size distribution at a high-altitude station in the South East of Spain: a remote high mountain site (Sierra Nevada; SNS, 2500 m a.s.l.). Due to its high altitude, the aerosol particles over SNS station are often representative of pristine free troposphere conditions, especially in winter and nighttime. During summer, SNS station is frequently influenced by transport of pollutants from Granada city to Sierra Nevada station as a result of mixing layer growth and the activation of the mountain-valley breeze phenomenon as well as by NPF events at midday (De Arruda Moreira et al., 2019; Casquero-Vera et al., 2020).</p><p> </p><p>In this study, we analyze the influence of NPF events to CCN concentrations during summer 2019 at the SNS high-altitude station. The study period (from June to August of 2019) was characterized by 67 NPF events, 16 undefined events and 13 non-events days. Following Rose et al. (2017) criteria, only those NPF events referred as type I, i.e. with clear particle growth from smallest sizes, were selected to investigate the contribution of NPF events on CCN concentrations. In this sense, we selected the 15 clearest NPF events for this analysis.</p><p> </p><p>Results show clear differences in the diurnal evolution of CCN concentration between NPF event and non-event days, demonstrating the large influence of NPF to CCN concentrations, especially at high supersaturations (Rejano et al., 2021). NPF events have been estimated to increase the CCN concentrations by 175% at SS=0.5%, evidencing NPF events as one of the major CCN source at this mountain site</p><p> </p><p> </p><p><strong>Acknowledgments</strong>: This work was supported by the European Union's Horizon 2020 research and innovation programme through project ACTRIS 2 (grant agreement No 654109), by the Spanish Ministry of Economy and Competitiveness through projects CGL2016-81092-R, CGL2017-90884-REDT and RTI2018-101154-A-I00 and by University of Granada Plan Propio through Visiting Scholars program. The Spanish Ministry of Universities funds Fernando Rejano under the predoctoral program FPU (FPU19/05340).</p><p> </p><p><strong>References</strong></p><p>Casquero-Vera, et al. (2020) Atmos. Chem. Phys. <strong>20, </strong>14253–14271.</p><p>De Arruda Moreira et al. (2019) Atmos. Chem. Phys. <strong>19</strong>, 1263-1280.</p><p>Rejano et al. (2021) Sci. Tot Envi., <strong>762</strong>, 143100.</p><p>Rose et al. (2017) Atmos. Chem. Phys. <strong>17</strong>, 1529-1541.</p><p>tract HTML here.</p>

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