Satellite passive microwave studies of the Sea of Okhotsk ice cover and its relation to oceanic processes, 1978–1982

1987 ◽  
Vol 92 (C12) ◽  
pp. 13013 ◽  
Author(s):  
Michael A. Alfultis ◽  
Seelye Martin
Keyword(s):  
Sea Of Okhotsk ◽  
Ice Cover ◽  
Passive Microwave ◽  
The Sea Of Okhotsk

scholarly journals The Impact of the Siberian High and Aleutian Low on the Sea-Ice Cover of the Sea of Okhotsk

1990 ◽  
Vol 14 ◽  
pp. 226-229 ◽  
Author(s):  
Claire L. Parkinson
Keyword(s):  
Sea Ice ◽  
Atmospheric Pressure ◽  
Sea Of Okhotsk ◽  
Ice Cover ◽  
Passive Microwave ◽  
Aleutian Low ◽  
Siberian High ◽  
The Sea Of Okhotsk ◽  
Ice Conditions ◽  
The Impact

Comparison of monthly averaged sea-ice distributions in the Sea of Okhotsk with atmospheric pressure data during the four winters having passive-microwave sea-ice coverage from the Nimbus 5 satellite, 1973–76, revealed a strong apparent relationship between the extent of the sea-ice cover and the influence of the Siberian High atmospheric pressure system. Examination of data for the years 1978–86, having passive-microwave coverage from the Nimbus 7 satellite, reveals that the strong correspondence found for 1973–76 between Okhotsk sea-ice extents and the Siberian High was not maintained in the 1978–86 period. A weaker correspondence continued, however, between the sea ice and the combined Siberian High/Aleutian Low system. A Siberian High/Aleutian Low index was created, and the correlation coefficient between that index and sea-ice extents in the midwinter month of February is 0.97 for the 1973–76 period and 0.52 for the 1978–86 period. Primary reasons for the lack of a consistently strong monthly averaged ice/atmosphere correspondence are: the various oceanographic influences on the sea-ice cover, the failure of monthly averages to reflect fully the important shorter-term interactions between the ice and the atmosphere, and the fact that ice conditions in one month are influenced by ice conditions in previous months.

scholarly journals The Impact of the Siberian High and Aleutian Low on the Sea-Ice Cover of the Sea of Okhotsk

1990 ◽  
Vol 14 ◽  
pp. 226-229 ◽  
Author(s):  
Claire L. Parkinson
Keyword(s):  
Sea Ice ◽  
Atmospheric Pressure ◽  
Sea Of Okhotsk ◽  
Ice Cover ◽  
Passive Microwave ◽  
Aleutian Low ◽  
Siberian High ◽  
The Sea Of Okhotsk ◽  
Ice Conditions ◽  
The Impact

Comparison of monthly averaged sea-ice distributions in the Sea of Okhotsk with atmospheric pressure data during the four winters having passive-microwave sea-ice coverage from the Nimbus 5 satellite, 1973–76, revealed a strong apparent relationship between the extent of the sea-ice cover and the influence of the Siberian High atmospheric pressure system. Examination of data for the years 1978–86, having passive-microwave coverage from the Nimbus 7 satellite, reveals that the strong correspondence found for 1973–76 between Okhotsk sea-ice extents and the Siberian High was not maintained in the 1978–86 period. A weaker correspondence continued, however, between the sea ice and the combined Siberian High/Aleutian Low system. A Siberian High/Aleutian Low index was created, and the correlation coefficient between that index and sea-ice extents in the midwinter month of February is 0.97 for the 1973–76 period and 0.52 for the 1978–86 period. Primary reasons for the lack of a consistently strong monthly averaged ice/atmosphere correspondence are: the various oceanographic influences on the sea-ice cover, the failure of monthly averages to reflect fully the important shorter-term interactions between the ice and the atmosphere, and the fact that ice conditions in one month are influenced by ice conditions in previous months.

scholarly journals DETAILED VALIDATION OF AMSR2 SEA ICE CONCENTRATION DATA USING MODIS DATA IN THE SEA OF OKHOTSK

2020 ◽  
Vol V-3-2020 ◽  
pp. 369-373
Author(s):  
K. Cho ◽  
K. Naoki ◽  
J. Comiso
Keyword(s):  
Global Warming ◽  
Solar Radiation ◽  
Sea Ice ◽  
Sea Of Okhotsk ◽  
Ice Cover ◽  
Passive Microwave ◽  
Concentration Data ◽  
Sea Ice Concentration ◽  
The Sea Of Okhotsk ◽  
Ice Concentration

Abstract. Global warming is one of the most serious problems we are facing in the 21st Century. Sea ice has an important role of reflecting the solar radiation back into space. However, once sea ice started to melt, the ice-free water would absorb the solar radiation and amplify global warming in the Arctic region. Thus, importance of sea ice monitoring is increasing. Since longer wavelength microwave can penetrate clouds, passive microwave radiometers on-board satellites are powerful tools for monitoring the global distribution of sea ice on daily basis. The Advanced Passive Microwave Scanning Radiometer AMSR2 which was launched by JAXA in May 2012 on-board GCOM-W satellite provides brightness temperature data that are used to estimate sea ice concentration, the fundamental parameter that is used to monitor the sea ice cover. JAXA is providing AMSR2 sea ice concentration data, derived using ASMR2 Bootstrap Algorithm as a standard product of AMSR2, as a means to communicate how the sea ice cover is changing. This paper describes the advantages of AMSR2 in calculating sea ice concentration and evaluate the accuracy of the sea ice concentration in the Sea of Okhotsk by comparing the result with simultaneously collected MODIS data. The result suggested that under normal winter condition, the RMSE of the AMSR2 sea ice concentration could be less than 10%.

scholarly journals Probability assessment of possible ice encounters during the petroleum hydrocarbons transportation in the Sea of Okhotsk

2021 ◽  
Vol 946 (1) ◽  
pp. 012016
Author(s):  
V A Romanyuk ◽  
V M Pishchal’nik ◽  
I V Nikulina
Keyword(s):  
Sea Of Okhotsk ◽  
Kamchatka Peninsula ◽  
Ice Cover ◽  
First Year ◽  
The Sea Of Japan ◽  
The Sea Of Okhotsk ◽  
Northern Sea Route ◽  
In Transit ◽  
Far Eastern ◽  
Maximum Development

Abstract The increase in freight traffic along the Northern Sea Route necessitates the study of the ice regime of the freezing seas of Russia, including the Far Eastern ones (Bering Sea, the Sea of Okhotsk and the Sea of Japan). This paper, on the basis of the analysis of the Sea of Okhotsk’s ice cover and the location of the edges of the Sea of Okhotsk’s ice massif, evaluates the probability of an encounter with ice for the ships in transit during cargo transportation on the Northern Sea Route through the Far Eastern seas along two basic routes from the southern tip of the Kamchatka Peninsula: 1) traverse Cape Lopatka–Sea of Okhotsk–La Perouse Strait; 2) traverse Cape Lopatka–Sangarsky Strait. It was shown that at the stage of ice cover maximum development in the Sea of Okhotsk (February-March), route No. 2 was the most adequate and the safest for ships of ice class Arc4 and below. The section of route No. 1 with a 70 % ice encounter probability was 421 km long in February and 382 km long in March. That section of the route was dominated by very cohesive first-year thin ice up to 70 cm thick with inclusions of first-year ice of average thickness (up to 120 cm).

On the seasonal sea ice cover of the Sea of Okhotsk

1983 ◽  
Vol 88 (C5) ◽  
pp. 2793 ◽  
Author(s):  
Claire L. Parkinson ◽  
Andrew J. Gratz
Keyword(s):  
Sea Ice ◽  
Sea Of Okhotsk ◽  
Ice Cover ◽  
The Sea Of Okhotsk

scholarly journals THIN ICE AREA EXTRACTION IN THE SEA OF OKHOTSK FROM GCOM-W1/AMSR2 DATA

2016 ◽  
Vol XLI-B8 ◽  
pp. 463-468 ◽  
Author(s):  
K. Cho ◽  
Y. Sato ◽  
K. Naoki
Keyword(s):  
Sea Ice ◽  
Brightness Temperature ◽  
Sea Of Okhotsk ◽  
Daily Basis ◽  
Passive Microwave ◽  
The Sea Of Okhotsk ◽  
Polarization Difference ◽  
Microwave Sensor ◽  
Scatter Plots ◽  
Microwave Radiometers

Passive microwave radiometers on-board satellites can penetrate clouds and can monitor the global sea ice distribution on daily basis. The authors have developed an algorithm to extract thin ice area in the Sea of Okhotsk from the passive microwave sensor AMSR2 on-board GCOM-W1 satellite. The algorithm uses the brightness temperature scatter plots of AMSR2 19 GHz polarization difference(V–H) vs. 19 GHz V polarization. The results were verified using simultaneously collected MODIS images in the Sea of Okhotsk. The most of the thin ice areas visually identified in the MODIS images were automatically extracted from AMSR2 data using the algorithm.

scholarly journals On the growth of ice cover in the Sea of Okhotsk with special reference to its negative correlation with that in the Bering Sea

2005 ◽  
Vol 42 ◽  
pp. 380-388 ◽  
Author(s):  
Kunio Rikiishi ◽  
Shinya Takatsuji
Keyword(s):  
Sea Ice ◽  
Bering Sea ◽  
Sea Of Okhotsk ◽  
Meteorological Data ◽  
Surface Wind ◽  
Ice Cover ◽  
Aleutian Low ◽  
Sea Ice Extent ◽  
The Sea Of Okhotsk ◽  
The Bering Sea

AbstractCharacteristic features of the growth of sea-ice extent in the Sea of Okhotsk are discussed statistically in relation to the surface wind and air temperature over the Okhotsk basin. It is shown that cold-air advection from the continent is not the only factor for the growth of ice extent: air-mass transformation with fetch (downwind distance from the coast) is another important factor. Using weekly growth rates of ice extent and objectively analyzed meteorological data, it is shown that the ice cover extends when cold northerly/northwesterly winds blow, whereas the ice cover retreats when warm northeasterly/easterly winds blow. It is concluded that the advance/retreat of the Sea of Okhotsk ice cover is largely determined by the atmospheric circulation, which is in turn controlled by the position and intensity of the Aleutian low. Occasional out-of-phase fluctuations between the Sea of Okhotsk and Bering Sea ice covers are found to occur when an intensified Aleutian low is located in the mid-western part of the Bering Sea and induces cold northwesterly winds to the Okhotsk basin and warm southeasterly winds to the Bering Sea, or when a weakened Aleutian low is displaced eastward and induces cold northeasterly winds to the Bering Sea and warm northeasterly winds to the Okhotsk basin.

scholarly journals Variations of atmospheric methane supply from the Sea of Okhotsk induced by the seasonal ice cover

1995 ◽  
Vol 9 (3) ◽  
pp. 351-358 ◽  
Author(s):  
S. Lammers ◽  
E. Suess ◽  
M. N. Mansurov ◽  
V. V. Anikiev
Keyword(s):  
Sea Of Okhotsk ◽  
Ice Cover ◽  
Atmospheric Methane ◽  
The Sea Of Okhotsk
Sign in / Sign up

Export Citation Format

Share Document