August position of the ITCZ and monsoon trough in the Pacific Ocean, depicted by area of convergent streamlines in the northern Pacific
The monsoon trough is a portion of the Intertropical Convergence Zone in the Western Pacific,[1][2] as depicted by a line on a weather map showing the locations of minimum sea level pressure,[1] and as such, is a convergence zone between the wind patterns of the southern and northern hemispheres.
Westerly monsoon winds lie in its equatorward portion while easterly trade winds exist poleward of the trough.[3] Right along its axis, heavy rains can be found which usher in the peak of a location's respective rainy season. The monsoon trough plays a role in creating many of the world's rainforests.[4]
The term monsoon trough is most commonly used in monsoonal regions of the Western Pacific such as Asia and Australia. The migration of the ITCZ/monsoon trough into a landmass heralds the beginning of the annual rainy season during summer months. Depressions and tropical cyclones often form in the vicinity of the monsoon trough, with each capable of producing a year's worth of rainfall in a matter of days.
^ ab"Monsoon trough". Glossary of Meteorology. American Meteorological Society. Archived from the original on 17 June 2009. Retrieved 4 June 2009.
^Bin Wang. The Asian Monsoon. Retrieved 2008-05-03.
^World Meteorological Organization. Severe Weather Information Centre. Retrieved 2008-05-03.
^Hobgood (2008)Global Pattern of Surface Pressure and Wind. Archived 18 March 2009 at the Wayback Machine Ohio State University. Retrieved 2009-03-08.
The monsoontrough is a portion of the Intertropical Convergence Zone in the Western Pacific, as depicted by a line on a weather map showing the locations...
near-equatorial trough. Where the ITCZ is drawn into and merges with a monsoonal circulation, it is sometimes referred to as a monsoontrough (a usage that...
the trough, alongside heavy rainfall on the land, which last from about four to eight weeks. An inactive phase or "breaks" is when the monsoontrough diminishes...
in rainfall mid-season, when the intertropical convergence zone or monsoontrough moves to higher latitudes in the middle of the warm season. When the...
as a monsoontrough develops over South-East Asia and Australasia and winds are directed toward Australia. In the Philippines, northeast monsoon is called...
which causes heating and drying of the air mass. The movement of the monsoontrough, or intertropical convergence zone, brings rainy seasons to savannah...
Taiwan and Japan due to the Monsoon advecting moisture primarily from the Indian Ocean into the region. The monsoontrough can reach as far north as the...
especially in northern India.[citation needed] The interaction of the monsoontrough with western disturbances may occasionally cause dense clouding and...
Isa, embedded in a stalled, but vigorously active, monsoontrough. Northerly, moisture-rich monsoonal air driven by the tropical low was encountered by...
motion and convection along the monsoontrough or intertropical convergence zone. The divergence over the near-equatorial trough leads to air rising and moving...
doldrums, near-equatorial trough, intertropical front, or the Intertropical Convergence Zone. When located within a monsoon region, this zone of low pressure...
consecutive years had their first storm develop as late as June. The monsoontrough established itself across the South China Sea eastward into the Philippine...
near-equatorial, or monsoon, trough. Due to strong high pressure due its north, and the associated high winds associated with the northern Asian monsoon, strongest...
an area of thunderstorm activity formed within the monsoontrough. Over the next few days, a monsoon depression formed to its southwest, steering the system...
Pacific typhoon season, Tip developed out of a disturbance within the monsoontrough on October 4 near Pohnpei in Micronesia. Initially, Tropical Storm Roger...
weakened. Nine storms developed in July, many of which influenced the monsoontrough over the Philippines to produce heavy rainfall and deadly flooding....
(2023 USD). An area of disturbed weather within the eastern Pacific monsoontrough developed into a broad low-pressure area over the far southwestern Caribbean...
airport. The monsoontrough became well-established along 20 degrees north latitude. To the east of Phyllis, part of the monsoontrough shifted east towards...
to the dry air caused by compressional heating. The movement of the monsoontrough, or Intertropical Convergence Zone, brings rainy seasons to savannah...
it be a depression in the Intertropical Convergence Zone (ITCZ) or monsoontrough, a broad surface front, or an outflow boundary, a low level feature...
North American monsoon, variously known as the Southwest monsoon, the Mexican monsoon, the New Mexican monsoon, or the Arizona monsoon is a pattern of...
extensive monsoontrough had become established from the Bay of Bengal eastward into the South China Sea. Typhoon Brenda developed from this trough over the...
persisted along the monsoontrough between Luzon and Guam, developing into a tropical depression on October 17. The same monsoontrough later spawned Typhoon...
amounts of rain throughout many parts of the Malay Archipelago. See also monsoontrough. Prevailing wind patterns interact with local topographic conditions...
to a weak surface circulation that formed on June 24 as part of the monsoontrough 370 km (230 mi) northwest of Truk. A second area of disturbed weather...
accidents. The sixth tropical depression of the season formed in the monsoontrough to the east of the Philippines on June 1. The system intensified as...
rainfall during mid-season when the intertropical convergence zone or monsoontrough moves poleward of their location during the middle of the warm season;...
Global Information