We present the results of studying variations in the concentrations of the CO and H2O atmospheric constituents over the Baikal Natural Territory from the long-term (2010–2021) data of the MLS Aura satellite measurements. The data were analyzed at the stratospheric heights for pressure levels within 215–10 hPa (~11–32 km) for the locations of Khorinsk (52.17° N, 109.77° E) and Zhigalovo (54.81° N, 105.15° E). We obtained averaged seasonal variations in the concentrations of the analyzed components for each pressure level under day and night conditions for the 2010-2020 period. Comparison of the obtained results with the behavior of the concentrations of atmospheric constituents in 2021 revealed an increased CO concentration for Khorinsk in July–August 2021, when increased smoke from forest fires was observed in the analyzed region.
The paper is dedicated to analysis of total electron content (TEC) dynamics over the decade of 1994-2004. The analysis is made by calculation of vertical TEC disturbances index (WTEC index) for more than 20 stations in Northern Hemisphere. The calculation procedure allows us to obtain long series of the index for each station and thus to analyze long-term dynamics of the ionosphere disturbance level over the station. The results show that intensity of TEC disturbances rises with latitude and solar activity level. It is also shown that high-latitude station YELL WTEC variations have a pronounced leap in amplitudes at a middle of 1997. It is believed that during the period of 1997-98 there was some global changes in Earth's parameters (e.g. sea level, gravitation field, polar cap albedo, etc.). In the paper, we try to analyze the connection of the observed WTEC leap with such global geophysical changes and to find the probable reasons of the observed phenomena.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.