Simulation of the dynamics of the altitude distribution of radon isotopes in the surface atmosphere according to near-surface aerophysical and radon observations

2021 ◽  
Author(s):  
Sergey Anisimov ◽  
Eldar Dmitriev ◽  
Alina Kozmina
Keyword(s):  
Near Surface ◽  
Altitude Distribution ◽  
Surface Atmosphere ◽  
Radon Isotopes

Variations of the electric field and current in the near-surface atmosphere during magnetic storms

2021 ◽  
Author(s):  
Svetlana A. Riabova ◽  
Yaroslav O. Romanovsky ◽  
Alexander A. Spivak
Keyword(s):  
Electric Field ◽  
Magnetic Storms ◽  
Near Surface ◽  
Surface Atmosphere

scholarly journals The composition of Europa's near-surface atmosphere

2008 ◽  
Vol 4 (S251) ◽  
pp. 327-328
Author(s):  
Mau C. Wong ◽  
Tim Cassidy ◽  
Robert E. Johnson
Keyword(s):  
Solar System ◽  
Surface Composition ◽  
Near Surface ◽  
Water Ice ◽  
Model Studies ◽  
Surface Atmosphere ◽  
Jovian Magnetosphere ◽  
Ice Surface ◽  
Geophysical Phenomenon ◽  
Inorganic Species

AbstractThe presence of an undersurface ocean renders Europa as one of the few planetary bodies in our Solar System that has been conjectured to have possibly harbored life. Some of the organic and inorganic species present in the ocean underneath are expected to transport upwards through the relatively thin ice crust and manifest themselves as impurities of the water ice surface. For this reason, together with its unique dynamic atmosphere and geological features, Europa has attracted strong scientific interests in past decades.Europa is imbedded inside the Jovian magnetosphere, and, therefore, is constantly subjected to the immerse surrounding radiations, similar to the other three Galilean satellites. The magnetosphere-atmosphere-surface interactions form a complex system that provides a multitude of interesting geophysical phenomenon that is unique in the Solar System. The atmosphere of Europa is thought to have created by, mostly, charged particles sputtering of surface materials. Consequently, the study of Europa's atmosphere can be used as a tool to infer the surface composition. In this paper, we will discuss our recent model studies of Europa's near-surface atmosphere. In particular, the abundances and distributions of the dominant O2 and H2O species, and of other organic and inorganic minor species will be addressed.

scholarly journals Ozone and Oxides of Sulfur and Nitrogen in the Near-Surface Atmosphere above the Baikal Natural Territory

2018 ◽  
Vol 24 ◽  
pp. 111-123
Author(s):  
O. I. Khuriganova ◽  
◽  
V. A. Obolkin ◽  
V. L. Potemkin ◽  
L. P. Golobokova ◽  
...  
Keyword(s):  
Near Surface ◽  
Surface Atmosphere ◽  
Natural Territory

Black Carbon in the Near-Surface Atmosphere Far Away from Emission Sources: Comparison of Measurements and MERRA-2 Reanalysis Data

2020 ◽  
Vol 33 (6) ◽  
pp. 591-601
Author(s):  
T. B. Zhuravleva ◽  
A. V. Artyushina ◽  
A. A. Vinogradova ◽  
Yu. V. Voronina
Keyword(s):  
Black Carbon ◽  
Reanalysis Data ◽  
Emission Sources ◽  
Near Surface ◽  
Surface Atmosphere

On the Question of Calculating the Parameters of Vortices in the Near-Surface Atmosphere of Mars

2019 ◽  
Vol 53 (6) ◽  
pp. 423-430 ◽  
Author(s):  
Yu. N. Izvekova ◽  
S. I. Popel’ ◽  
O. Ya. Izvekov
Keyword(s):  
Near Surface ◽  
Surface Atmosphere

High genetic diversity and variability of microbial communities in near-surface atmosphere of Crete island, Greece

Aerobiologia ◽  
2020 ◽  
Vol 36 (3) ◽  
pp. 341-353
Author(s):  
Paraskevi N. Polymenakou ◽  
Manolis Mandalakis ◽  
Michalis Macheras ◽  
Anastasis Oulas ◽  
Jon Bent Kristoffersen ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Microbial Communities ◽  
High Genetic Diversity ◽  
Near Surface ◽  
Surface Atmosphere ◽  
Crete Island

scholarly journals Effects of shrub and tree cover increase on the near-surface atmosphere in northern Fennoscandia

2017 ◽  
Vol 14 (18) ◽  
pp. 4209-4227 ◽  
Author(s):  
Johanne H. Rydsaa ◽  
Frode Stordal ◽  
Anders Bryn ◽  
Lena M. Tallaksen
Keyword(s):  
Snow Cover ◽  
Land Surface ◽  
Wrf Model ◽  
Tree Cover ◽  
Atmospheric Response ◽  
Study Region ◽  
Near Surface ◽  
Positive Feedbacks ◽  
Surface Atmosphere ◽  
Northern Fennoscandia

Abstract. Increased shrub and tree cover in high latitudes is a widely observed response to climate change that can lead to positive feedbacks to the regional climate. In this study we evaluate the sensitivity of the near-surface atmosphere to a potential increase in shrub and tree cover in the northern Fennoscandia region. We have applied the Weather Research and Forecasting (WRF) model with the Noah-UA land surface module in evaluating biophysical effects of increased shrub cover on the near-surface atmosphere at a fine resolution (5.4 km  ×  5.4 km). Perturbation experiments are performed in which we prescribe a gradual increase in taller vegetation in the alpine shrub and tree cover according to empirically established bioclimatic zones within the study region. We focus on the spring and summer atmospheric response. To evaluate the sensitivity of the atmospheric response to inter-annual variability in climate, simulations were conducted for two contrasting years, one warm and one cold. We find that shrub and tree cover increase leads to a general increase in near-surface temperatures, with the highest influence seen during the snowmelt season and a more moderate effect during summer. We find that the warming effect is stronger in taller vegetation types, with more complex canopies leading to decreases in the surface albedo. Counteracting effects include increased evapotranspiration, which can lead to increased cloud cover, precipitation, and snow cover. We find that the strength of the atmospheric feedback is sensitive to snow cover variations and to a lesser extent to summer temperatures. Our results show that the positive feedback to high-latitude warming induced by increased shrub and tree cover is a robust feature across inter-annual differences in meteorological conditions and will likely play an important role in land–atmosphere feedback processes in the future.

Sign in / Sign up

Export Citation Format

Share Document