Why is the annual total solar radiation in the Bering Sea particularly low?

The total solar radiation is related to underlying surface factors, latitude position, terrain factors, climate factors and so on. Data: Bering Sea is the northernmost marginal sea along the Pacific coast, between 565,438+0 22 ′ east longitude and 66,365,438+0 ′ north latitude, and the sea area is triangular. It is connected to the Arctic Ocean in the north through the Bering Strait and to the Pacific Ocean in the south through the Aleutian Islands. Located in the northernmost waters of the Pacific Ocean. The eastern and northern regions have a sub-polar climate, and the winter temperature is -35? 6? 5-45℃(-3 1? 6? 5-49℉)。 The wind is very strong, and there are snowstorms from time to time. Almost all the sea water comes from the Pacific Ocean. The northern part of the sea area is a vast continental shelf, accounting for about 44% of the total area; Deep-water basins in the central and western regions account for about 43% of the total area; The rest are continental slopes. The seabed sediments in Bering Sea are mainly composed of terrigenous materials. Near the coast, the seabed is covered with coarse sand composed of gravel and shells. The Bering Sea is gradually replaced by impurity mud, which is one of the regions with the largest gradient in the world atmospheric system. Strong atmospheric activity over the sea area often leads to dense clouds and more snowstorms. Strong winds stir up big waves, often forming small and fierce waves as high as 8- 12 meters. The temperature in the sea area is low, and it is below zero all the year round in the north, with an annual average temperature of -8℃ and an absolute minimum temperature of -44. 7℃. The annual average temperature in the south and southeast is 2-4℃, and the highest temperature is10-1℃. The precipitation distribution in this sea area gradually increases from north to south and from west to east. The northern part is affected by the polar air mass, and the annual precipitation is about 260-380 mm; Southwest and southeast are affected by polar ocean air masses, with an annual precipitation of 700 mm.

The seawater of Bering Sea can freely exchange with the warm water of the Pacific Ocean, and the northern part is connected with the cold water of the Arctic Ocean, so the sea surface temperature is lower in the north and higher in the south. Affected by the long cold winter in North Asia, the cooling depth of seawater in the west can reach 150-250 meters. Affected by the warm water in the North Pacific Ocean, it is not very cold in winter in the east, but warmer in summer. The difference of water temperature between north and south, coupled with the influence of airflow activities, has promoted the physical changes of surface water in Bering Sea. In winter, the water temperature is very low, and the northern part of the sea is frozen thousands of miles. The highest water temperature in the hottest month in summer can reach 8℃. The heating depth can reach 20-30 meters, forming shallow thermocline. In summer, more rainfall on the sea surface and river water injection reduce the salinity of the sea area, and the lowest salinity can reach 17‰, thus causing salinity thermocline with a depth of 20-30 meters. The combination of two thermoclines makes the density gradient of surface seawater exceed 30 meters, which constitutes a remarkable hydrological feature in summer. . In the deep sea, it is covered by gray-green clay mud and gravel deposited by ice water. It's cold all year round. The annual average temperature is 2 ~ 4℃ in the south and -8 ~- 10℃ in the north. The days when the annual average temperature in China and northern Japan is below zero and below -20℃ are 240 days and 100 days respectively. The number of days when the daily average temperature in the south is between 0 and-20℃ is 140 days. The annual precipitation is more in the south and less in the north, and it can reach more than 1600 mm in the southeast, mainly rainfall; It's only 280mm in the north, mainly due to snowfall. In winter, the Aleutian low pressure moves southward, and most of the sea areas are controlled by the Arctic cold air mass and the continental cold air mass, with northerly winds prevailing and the temperature plummeting. The lowest temperature in the north is -45℃, and there is a snowstorm for half a month; It's MINUS 23 degrees in the south. In summer, the Aleutian depression retreated to the northeast of the sea area, and the ocean air mass moved northward. The sea area is mostly south, with more clouds and precipitation, and the visibility is extremely poor. Bering Sea is one of the most difficult sea areas in the world, with frequent storms, cold climate and floating ice on the sea surface. Especially in the north, it is covered with ice as thick as 1 ~ 2m in winter. Sea ice began in September, and the freezing range was the largest at 65438+ 10, which can extend to the 200-meter isobath and reach Bristol Bay in the south and the offshore of Kamchatka. In May, the ice began to melt. In July, there was no ice except the floating ice in the Bering Strait.

In addition, the Bering Sea is relatively shallow, with an average depth of 45 meters.

A: The Bering Sea is located at high latitudes, adjacent to the Arctic Ocean. The climate is cold, storms are frequent, and the sun exposure time is short, so the solar radiation obtained is less than that in other areas. There are many ice floes on the sea surface, which reflect some solar radiation. Therefore, the total solar radiation is very small. It's purely personal. Please forgive my shortcomings.