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Tropical upper tropospheric trough information


A tropical upper tropospheric trough (TUTT), also known as the mid-oceanic trough,[1] is a trough situated in the upper-level (at about 200 hPa) tropics. Its formation is usually caused by the intrusion of energy and wind from the mid-latitudes into the tropics. It can also develop from the inverted trough adjacent to an upper level anticyclone. TUTTs are different from mid-latitude troughs in the sense that they are maintained by subsidence warming near the tropopause which balances radiational cooling. When strong, they can present a significant vertical wind shear to the tropics and subdue tropical cyclogenesis. When upper cold lows break off from their base, they tend to retrograde and force the development of, or enhance, surface troughs and tropical waves to their east. Under special circumstances, they can induce thunderstorm activity and lead to the formation of tropical cyclones.

  1. ^ R. N. Ferreira; W. H. Schubert (1999). "The role of tropical cyclones in the formation of tropical upper-tropospheric troughs". Journal of the Atmospheric Sciences. 56 (16): 2891–2907. Bibcode:1999JAtS...56.2891N. doi:10.1175/1520-0469(1999)056<2891:TROTCI>2.0.CO;2. ISSN 0022-4928. Retrieved 2009-12-23.

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Tropical upper tropospheric trough

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A tropical upper tropospheric trough (TUTT), also known as the mid-oceanic trough, is a trough situated in the upper-level (at about 200 hPa) tropics....

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mesoscale. Upper level cyclones can exist without the presence of a surface low, and can pinch off from the base of the tropical upper tropospheric trough during...

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can be associated with the features when located east of a tropical upper tropospheric trough. The term was first publicly seen in an Air Force satellite...

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Upper tropospheric cyclonic vortex

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Mexico, and Caribbean Sea, and that the lower tropospheric responses to the tropical upper tropospheric trough in the North Atlantic are differ from those...

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1994 Pacific typhoon season

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A tropical disturbance formed in the Caroline Islands on July 5 south of a tropical upper tropospheric trough. The system organized into a tropical depression...

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Troposphere

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vertical expansion of the troposphere occur in the tropical latitudes. At the middle latitudes, tropospheric temperatures decrease from an average temperature...

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Typhoon Tip

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out of a disturbance within the monsoon trough on October 4 near Pohnpei in Micronesia. Initially, Tropical Storm Roger to the northwest hindered the...

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2010 Pacific typhoon season

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poleward outflow into the tropical upper tropospheric trough had improved. Late on July 19, PAGASA issued their last advisory on Tropical Storm Caloy as it had...

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Typhoon Bualoi

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October 20, before its rate of strengthening was stopped by a tropical upper tropospheric trough the following day. The rate was later recommenced through...

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1964 Pacific typhoon season

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their deaths. Nancy directly originated from a segment of a tropical upper-tropospheric trough, an atmospheric feature that was farther north than average...

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1996 Pacific typhoon season

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on May 23. Dan existed from July 5 to July 11. A Tropical Upper Tropospheric Trough spawned Tropical Depression 7W on July 10 over the open Western Pacific...

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Tropical cyclone

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influenced less by tropical easterly waves and more by the seasonal movement of the Intertropical Convergence Zone and the monsoon trough. Other weather systems...

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2023 Pacific typhoon season

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upgraded to Tropical Storm Bolaven. Bolaven then began developing poleward outflow into the southern edge of a tropical upper tropospheric trough cell, with...

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1998 Pacific typhoon season

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and dissipated the next day. An active Tropical Upper Tropospheric Trough allowed for the development of Tropical Depression 6W on August 22, east of Luzon...

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Atmospheric river

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water vapor over the Earth's oceans." Tropical upper tropospheric trough, a band of moisture common in tropical regions ARkStorm, a hypothetical storm...

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Tropical cyclogenesis

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2001). "A Composite Study of the Interactions between Tropical Cyclones and Upper-Tropospheric Troughs". Monthly Weather Review. 129 (10): 2570–84. Bibcode:2001MWRv...

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2021 Pacific typhoon season

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international name Choi-wan. Choi-wan's center was exposed due to a tropical upper tropospheric trough from the northeast, inducing shear on the system. On June...

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1994 Pacific hurricane season

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Pacific typhoon season. Wind shear from a tropical upper-tropospheric trough weakened back into a tropical storm as it crossed the dateline, and the Joint...

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Hurricane Floyd

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time, the track shifted more to the northwest, steered by a tropical upper tropospheric trough north of Puerto Rico. An eye developed in the center of the...

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1968 Atlantic hurricane season

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advisories on tropical systems at or exceeding 39 mph (63 km/h), which is tropical storm strength. The interaction of a mid-tropospheric trough and a cold...

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1985 Pacific typhoon season

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north, the storm took two days to gain tropical storm strength, likely because a tropical upper tropospheric trough (TUTT) was so close to the north, restricting...

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Typhoon Ketsana

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the subtropical ridge and had good poleward outflow into a tropical upper tropospheric trough (TUTT) cell. Throughout September 25 the intensification of...

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1989 Pacific typhoon season

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mid-tropospheric ridge was unusually narrow and led to difficulties in forecasting straight-running storms. Additionally, the tropical upper tropospheric...

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South Atlantic tropical cyclone

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northeastwards for a couple of days over unusually warmer waters, favorable upper-level tropospheric winds and strong low-level convergence, which led to its intensification...

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1997 Pacific typhoon season

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middle of July, a mid-level circulation formed within the tropical upper tropospheric trough. The circulation built toward the surface, and by July 20...

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2013 Atlantic hurricane season

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Pennsylvania. A tropical wave exited the west coast of Africa and entered the Atlantic on October 11. Four days later, a mid- to upper-level trough increased...

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