Spatial and temporal variability of convective instability in the south of Western Siberia, determined on the basis of the total totals index (ERA5 reanalysis)

2021 ◽  
Author(s):  
Konstantin N. Pustovalov ◽  
Valentina P. Gorbatenko ◽  
Olga E. Nechepurenko ◽  
Petr M. Nagorskiy ◽  
Maria V. Oglezneva
Keyword(s):  
Temporal Variability ◽  
Convective Instability ◽  
Western Siberia ◽  
Spatial And Temporal Variability ◽  
The South

scholarly journals The spatial and temporal variability of convective instability in the south of Western Siberia according to ERA5 reanalysis data

2021 ◽  
pp. 203-215
Author(s):  
К.Н. Пустовалов ◽  
В.П. Горбатенко ◽  
П.М. Нагорский ◽  
О.Е. Нечепуренко
Keyword(s):  
Temporal Variability ◽  
Convective Instability ◽  
Western Siberia ◽  
Reanalysis Data ◽  
Spatial And Temporal Variability ◽  
Positive Trend ◽  
The South ◽  
K Index ◽  
Irtysh River ◽  
Spatio Temporal

Представлены результаты сравнительного анализа пространственно-временной изменчивости конвективной неустойчивости на юге Западной Сибири по данным индексов неустойчивости K-Index и Total Totals, полученных из реанализа ERA5. Показано, что по значениям обоих индексов максимум конвективной неустойчивости над югом Западной Сибири приходится на Кулундинскую равнину и пойму верхнего течения р. Иртыш. Кроме того, высокие значения индексов наблюдаются над юго-востоком Урала и северо-востоком Васюганской равнины. Северная граница со значениями KIQ1 ≥ 30 ◦C и TTQ1 ≥ 50 ◦C, указывающими на вероятность образования гроз 70%, простирается до 62◦ и 61◦ с.ш. соответственно. За период 1990–2019 гг. в динамике среднегодовых значений KIQ1, в целом по территории, преобладает положительный тренд, а в динамике TTQ1 на большей части территории значимые изменения отсутствуют, однако отмечается цикличность с периодом ∼ 10 лет. A comparative analysis of the spatio-temporal variability of convective instability in the south of Western Siberia according to the K-Index and Total Totals index obtained from the ERA5 reanalysis is presented. Related to both indices, the Kulunda plain and the upper Irtysh River floodplain have the highest level of convective instability in the south of Western Siberia. In addition, high index values are observed over the southeastern Urals and the northeastern Vasyugan plain. The northern boundary extends to 62◦ and 61◦ N, respectively, with KIQ1 ≥ 30 ◦C and TTQ1 ≥ 50 ◦C, indicating a thunderstorm probability greater than 70%. The dynamics of annual average KIQ1 values for the territory as a whole are dominated by a positive trend for the period 1990–2019, and there are no significant changes in TTQ1 dynamics for most of the territory, but there is cyclicality with a period of ∼ 10 years.

scholarly journals Spatial and temporal variability of satellite sea surface temperature in the Makassar Strait and the Java Sea

2021 ◽  
Vol 944 (1) ◽  
pp. 012049
Author(s):  
M Syahdan ◽  
A S Atmadipoera ◽  
S B Susilo ◽  
J Lumban-Gaol
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Temporal Variability ◽  
Sea Surface ◽  
Spatial And Temporal Variability ◽  
The South ◽  
Monsoon Period ◽  
South Sulawesi ◽  
Strong Indicator ◽  
Java Sea

Abstract Sea surface temperature (SST) data obtained from the Aqua-MODIS satellite from 2002 to 2012 were analyzed to determine the spatial and temporal variability in the key region of small pelagic fisheries between Makassar Strait and the Java Sea. Results of the Empirical Orthogonal Function (EOF) analysis show that the characteristics of this region are described by 60% based on the greatest contribution value respectively. The largest contribution of 52% shows that the SSTs in this region is warm. A strong indicator of these conditions appears in the east through the southern part of Kalimantan Island while the weak indicator is in the south to western part of Sulawesi Island. The temporal variation shows that the annual oscillation is dominant in this area where maximum SSTs occurs in the first transitional monsoon (April), while the minimum occurs in the southeast monsoon period (August). The influence of southeast monsoon formats the minimum SSTs area in the south of South Sulawesi that is generated by parallel wind-driven induces to the coast and the divergent current close to the coast. Due to inter-annual variability, minimum SSTs occurs before the El Nino episode whereas the maximum occurs before the La Nina event.

Zoya Il'inichna Glezer – life and scientific achievements

2019 ◽  
pp. 318-323
Author(s):  
Zinaida V. Pushina ◽  
Galina V. Stepanova ◽  
Ekaterina L. Grundan
Keyword(s):  
Western Siberia ◽  
Kara Sea ◽  
European Russia ◽  
Great Contribution ◽  
The South ◽  
The Creation ◽  
The 1960S ◽  
Scientific Achievements ◽  
South Of European Russia

Zoya Ilyinichna Glezer is the largest Russian micropaleontologist, a specialist in siliceous microfossils — Cenozoic diatoms and silicoflagellates. Since the 1960s, she systematically studied Paleogene siliceous microfossils from various regions of the country and therefore was an indispensable participant in the development of unified stratigraphic schemes for Paleogene siliceous plankton of various regions of the USSR. She made a great contribution to the creation of the newest Paleogene schemes in the south of European Russia and Western Siberia, to the correlations of the Paleogene deposits of the Kara Sea.

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