employee from 01.01.1974 to 01.01.2025
St.Petersburg, Russian Federation
St.Petersburg, Russian Federation
St.Petersburg, Russian Federation
St.Petersburg, Russian Federation
St.Petersburg, Russian Federation
VAK Russia 1.6
UDC 556
UDC 504.455
UDC 55
UDC 550.34
UDC 550.383
CSCSTI 37.27
CSCSTI 37.01
CSCSTI 37.15
CSCSTI 37.25
CSCSTI 37.31
CSCSTI 38.01
CSCSTI 36.00
CSCSTI 37.00
CSCSTI 38.00
CSCSTI 39.00
CSCSTI 52.00
Russian Classification of Professions by Education 05.02.02
Russian Classification of Professions by Education 05.00.00
Russian Library and Bibliographic Classification 260
Russian Library and Bibliographic Classification 223
Russian Library and Bibliographic Classification 26
Russian Trade and Bibliographic Classification 6325
Russian Trade and Bibliographic Classification 63
BISAC SCI095000 Mechanics / Hydrodynamics
BISAC SCI065000 Mechanics / Thermodynamics
BISAC SCI032000 Physics / Geophysics
BISAC SCI SCIENCE
The results of reproducing the thermal state of Lake Ladoga in the period 1980–2020 using two models, the St. Petersburg Baltic Eutrophication Model (SPBEM) of the St. Petersburg Branch of the Shirshov Institute of Oceanology of the RAS, and the Inland Sea Hydrodynamics Model (ISHM) of the Institute of Limnology of the RAS, are compared with available data from contact and satellite measurements, as well as with each other. In general, both models adequately reproduce the main features of the average state and intra-annual variability of the lake. The long-term annual averages of the surface temperature of Lake Ladoga based on the MODIS Aqua (2002–2020), MODIS Terra (2000–2020) and Suomi NPP VIIRS (2012–2020) data are 7.75, 7.66 and 7.90 °C, respectively, while the SPBEM estimates are underestimated by 1.00, 0.96 and 1.00 °C, respectively, and the ISHM estimates are underestimated by 0.66, 0.57 and 0.54 °C. The interannual trends in the surface temperature calculated using satellite data were statistically insignificant at a 95 % confidence level. The average annual modeled surface temperature in the period 1980–2020, according to statistically significant linear trends, increased by 1.2 (1.7) °C, respectively, according to SPBEM and ISHM. The temperature increase was 1.6 (2.6) °C during the summer period and 0.8 (1.0) °C in the winter. The average annual temperature of the entire lake changed by 0.5 (0.8) °C. SPBEM and ISHM overestimate the observed average ice area of 7816 km² for the period 1980–2020 by 15 and 14 %, respectively; its annual averages decreased by 85, 68 and 108 km² per year according to SPBEM, ISHM and observations.
Intra-annual and interannual variability, temperature, ice, modeling, satellite and in situ observations, Lake Ladoga
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