Climatic Changes in Thermal Conditions of Marginal Seas in the
Western Pacific

Rostov, I. D.; Dmitrieva, E. V.; Rudykh, N. I.; Vorontsov, A. A.

doi:10.3103/s1068373920030048

Cited by 7 publications

(9 citation statements)

References 15 publications

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“…They can be associated with the El Niño impact with a time shift of several months against the background of a general growth trend in Та [4,35,36]. Integral curves of cumulative anomalies correspond to separate phases of alternation of warm and cold periods, noted earlier in different years of observations [1,3,8], which are consistent with changes in regional climatic index (CI) and the AAC state [2,9,22]. Individual extrema on the curves (Fig.…”

Section: T a B L Ementioning

confidence: 55%

“…In this case, the Ta trend value increases in the direction from low latitudes to higher ones, and the interannual variation of seasonal temperatures in each of the regions has its own peculiarities [1,2,4,9]. Thus, according to observations at coastal meteorological stations (MS), the positive trend value in the mean annual air temperature in the seas of the eastern sector of the Arctic over the past 40 years ranged from 0.7 to 1.5°C/10 years [21], which is significantly higher than the corresponding estimates for the marginal seas of the western Pacific Ocean, such as the Sea of Okhotsk (0.3-0.4°C/10 years), Sea of Japan (0.2-0.3°C/10 years), Yellow, East China and South China seas (0.1-0.2°C/10 years) [22]. At the same time, until 2014 near the northwestern coast of America, there were no the stable tendencies to warming [1,23], which was replaced by a period of growth of positive anomalies in water and air temperatures in recent years [6].…”

Section: Introductionmentioning

confidence: 59%

“…To ensure the comparability of quantitative estimates with the results obtained for other geographic regions [21,22], a unified method of processing and analyzing the data used was applied. The analysis of the interannual changes structure in the fields of air temperature, water on the ocean surface (SST) and atmospheric pressure was carried out using the method of decomposing the anomalies of these fields into principal components, or empirical orthogonal functions (EOF).…”

Section: Methodsmentioning

confidence: 99%

“…Ta and SST oscillations in each of the identified areas are characterized by very close correlations -R ˃ 0.9, and the relationship of temperature variations between areas is significantly lower than the relationship between them in the region center with any other point within the region. Note that the Sea of Okhotsk water area is not included in this scheme, since it was already considered before [22].…”

Section: Methodsmentioning

confidence: 99%

“…Climatic changes occurring in the northern Pacific Ocean and the Pacific subarctic, through circulation mechanisms in the atmosphere and regional AACs, are closely related to similar phenomena in other regions [2,[26][27][28] and influence the ongoing global processes, being an important regulator of interdecadal climatic fluctuations [29][30][31]. [32], fields of pressure, wind and heat fluxes on the ocean surface, as well as climatic indices (CI) taking into account the seasonality of their action: PDO, AMO, SOI, PTW, NP, WP, PNA and EP/NP, was used in the present study [22]. The considered CIs have a clear geographic reference and a definite physical interpretation ([2], https://climatedataguide.ucar.edu/climate-data).…”

Section: Introductionmentioning

confidence: 99%

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Climatic Changes of Thermal Conditions in the Pacific Subarctic at the Modern Stage of Global Warming

Rostov¹,

Dmitrieva²,

Rudykh³

2021

PhO

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Purpose. The study is aimed at identifying the regional features of the surface air temperature in the coastal zone and over the Pacific Ocean (to the north of 40° N) manifested as a result of global climate changes at the turn of the XX–XXI centuries, and at assessing their trends and possible causal relationships with the processes in the atmosphere and on the ocean surface. Methods and Results. Based on the Global Meteorological Network and NOAA reanalysis data, the regional features of interannual oscillations of the surface air temperature and their relationship with variations in the fields of pressure, wind and water temperature on the ocean surface, and with climate indices over the past 4 decades were identified. In order to determine the temperature field spatial-temporal structure and to zone the water area according to the features of climate changes, the methods of cluster, correlation analysis and the apparatus of empirical orthogonal functions were used. The results obtained made it possible to characterize the degree of heterogeneity of the studied area response to the ongoing global changes, to identify different domains and to assess quantitatively the warming rate in these water areas. Conclusions. The tendencies of modern warming are manifested in the trends of interannual air temperature variability, on the average, by ~0.20°C/10 years in the subarctic, and indicate significant regional differences (1.5–2 times) in the ongoing changes. In the west of the region, the warming rate is higher than in the east, where the temperature trends are minimal or statistically insignificant. In the warm period of a year, their values are higher than those in the cold period. The alternation phases of the warm and cold periods are consistent with the variation tendencies in the characteristics both of the atmospheric action centers and various climatic parameters. The corresponding correlations are most widely manifested in variations in the empirical orthogonal functions modes of the H500 geopotential field, and the PDO, NP, SOI, PTW, AD and EP/NP indices. Stable anomalies and trends of the ocean surface temperature in the North Atlantic also play an important role in formation of the Та anomalies in the western subarctic.

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Section: T a B L Ementioning

confidence: 55%

Section: Introductionmentioning

confidence: 59%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Climatic Changes of Thermal Conditions in the Pacific Subarctic at the Modern Stage of Global Warming

Rostov¹,

Dmitrieva²,

Rudykh³

2021

PhO

Self Cite

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Variations of hydrometeorological conditions in the basin of Kurile Lake (Kamchatka) in summer period for 1976–2020 and connection with global climatic changes

Kolomeytsev

Lepskaya

2022

Issledovaniâ vodnyh biologičeskih resursov Kamčatki i Severo-Za

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Description of summer hydrometeorological conditions is provided for the period from 1976 to 2020. Statistical evaluations of the time series of the entire hydrometeorological dataset collected at the KamchatNIRO observation station ashore of the Ozernaya River emerge from Kurile Lake have been obtained. Analysis of linear trends has been accomplished. Revealed rise of the air temperature at the Ozernaya meteostation and Kurile Lake and of the water temperature in the Ozernaya River is reckoned higher compared global trends. The correlations found between temperature characteristics were significant. The correlation coefficients between the air temperature at the Ozernaya meteostation and Kurile Lake either water temperature in the Ozernaya River demonstrate increase averaged for season and from 0.3 in June to 0.6–0.8 in August. The rest of the parameters correlated weaker, and there were few significant ones. Stable significant correlations were revealed between temperature characteristics and global temperature indices. Also linear correlations between the WP index, characterizing low-frequency variability in the atmosphere in the West Pacific, and a number of parameters averaged for the season or in different months were meaningful. Spectral analysis with confidence interval of 95% revealed only the spectral harmonics of interannual fluctuations in the amount of precipitation for the season with a period of 2.2 years as significant.

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Long-term changes in thermal conditions on the surface of the Far-Eastern Seas and North-West Pacific and their relationship with large-scale climate processes

Хен

Ustinova

Sorokin

2022

Izv. Tihookean. naučno-issled. rybohoz. centra

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Previously published results of the study [Khen et al., 2019b] are continued. Long-term changes of the sea surface temperature (SST) in the Far-Eastern Seas and North-West Pacific (NWP) are described for 1950–2019 and their relationship with large-scale climate processes described by climatic indices (AO, Nino 3.4, PDO, ALPI, NPI, PNA, SHI, and WP) is analyzed. SST has increased in all seasons, with higher rate in winter and autumn and less significant trend in summer. A prominent shift to warmer regime occurred in the Bering Sea in 1977 that coincided with a sharp change in dynamics of PDO, ALPI, NPI, and PNA indices. Such shifts were observed in the Okhotsk Sea in 1981 and in the Japan Sea in 1990, one year after the shifts in the time-series of AO, PDO, and PNA indices. Smaller shifts to warming happened in NWP in 2008 and 2018. Pacific Decadal Oscillation is the main contributor to temperature variability in the Bering Sea in all seasons, though the contribution of ALPI and PNA variation is considerable in winter and spring. Arctic Oscillation is the most important for the Okhotsk Sea. Variations of AO, SHI and WP are significant for the SST variability in the Japan Sea. Any single climatic index does not determine the SST variability in NWP, in all seasons. The set of climatic indices can be divided into two categories: western and eastern ones, according to their contribution to SST variability in certain regions. The western group includes AO, SHI, and WP, which contribute mostly to the variations in the western regions, westward from the longitude of Kamchatka. The most important indices in the eastern group are PDO, PNA and ALPI.

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Climatic Changes in Thermal Conditions of Marginal Seas in the Western Pacific

Cited by 7 publications

References 15 publications

Climatic Changes of Thermal Conditions in the Pacific Subarctic at the Modern Stage of Global Warming

Climatic Changes of Thermal Conditions in the Pacific Subarctic at the Modern Stage of Global Warming

Variations of hydrometeorological conditions in the basin of Kurile Lake (Kamchatka) in summer period for 1976–2020 and connection with global climatic changes

Long-term changes in thermal conditions on the surface of the Far-Eastern Seas and North-West Pacific and their relationship with large-scale climate processes

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