Academic literature on the topic 'Monsoon lows'

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Journal articles on the topic "Monsoon lows"

1

KUMAR, J. RAJENDRA, and S. K. DASH. "Inter-annual and intra-seasonal variation of some characteristics of monsoon disturbances formed over the Bay." MAUSAM 50, no. 1 (2021): 55–62. http://dx.doi.org/10.54302/mausam.v50i1.1804.

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The characteristics of monsoon disturbances during drought and flood years for the period 1971-96 are studied to find out their inter-annual variations. Variations of some of the characteristics of monsoon disturbances formed over Bay during 1979-88, with respect to different monsoon conditions such as strong, weak and break monsoons, are also studied. The results show that monsoon disturbance days are higher during flood years than during drought years. Drought years are associated with higher chances of low pressure areas to intensity into depressions, less westward movement, more horizontal
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2

KUMAR, J. RAJENDRA, V. THAPLIYAL, and S. K. DASH. "Decadal and epochal variation of frequency and duration of monsoon disturbances and their secular relationship with rainfall over India." MAUSAM 55, no. 3 (2022): 397–408. http://dx.doi.org/10.54302/mausam.v55i3.1171.

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Decadal and epochal variation of frequency and duration of monsoon disturbances like low pressure areas (lows), depressions and Cyclonic Storms (CS) over Indian region are studied by using 110 years (1890-1999) data. No linearly decreasing/increasing trend is observed during 110 years period in any of their frequencies. However, epochal linearly decreasing/increasing trends are noticed in decadal frequencies or duration of different monsoon disturbances. Decadal frequencies of depressions, CS and depressions are decreasing from 1970-79, till recently ended decade of 1990-99. During recent deca
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3

BHADRAM, C. V. V. "A synoptic study of active and weak southwest monsoon over Andhra Pradesh." MAUSAM 54, no. 2 (2003): 385–92. http://dx.doi.org/10.54302/mausam.v54i2.1523.

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An attempt has been made in this study to identify the synoptic systems that cause active or vigorous monsoon conditions over the three meteorological sub-divisions of Andhra Pradesh using the data for the years 1986 to 2000. Despite significant decrease in the frequency of formation of monsoon depressions in recent years, monsoon performance is noticed to be very good. Monsoon lows and upper air cyclonic-circulations (cycirs) found to be the chief synoptic systems which activate the monsoon over the state. Typical cases of these synoptic situations are discussed.
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4

JENAMANI, RAJENDRA KUMAR, and S. K. DASH. "A study on the role of synoptic and semi-permanent features of Indian summer monsoon on it’s rainfall variations during different phases of El-Nino." MAUSAM 56, no. 4 (2022): 825–40. http://dx.doi.org/10.54302/mausam.v56i4.1038.

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Characteristics of different synoptic and semi-permanent features of Indian Summer Monsoon Rainfall (ISMR), such as monsoon disturbances (lows and depressions), monsoon trough and Tibetan anticyclone and duration of monsoon, are studied individually for different phases of El-Nino during the period 1960-98 to understand why during some El-Nino single events, ISMR was deficient while during other years, ISMR was on the positive side of normal or normal. This study examines cases of El-Nino double events with deficient and near deficient ISMR in one of the two years and in both the years respect
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5

RAJAMANI, S. "Energetics of the monsoon circulation over south Asia :Part -I Diabatic heating and the generation of available potential energy." MAUSAM 36, no. 1 (2022): 7–12. http://dx.doi.org/10.54302/mausam.v36i1.1573.

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Considering the monsoon circulation as the mean zonal flow with standing or stationary eddies (monsoon trough etc) and the transient eddies (monsoon depressions, lows etc) supermposed on it, diabatic heating and generation of available potential energy over south Asia have been computed for the typical monsoon month of July 1963, based on the computations of vertical velocity from omega-equation, and thermodynamic energy equation.
 Regions of upward vertical velocity are found to be areas of good rainfall. Rate of monthly mean diabatic heating in the troposphere is of the order of 0.5 deg
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6

Haertel, Patrick, and William R. Boos. "Global association of the Madden-Julian Oscillation with monsoon lows and depressions." Geophysical Research Letters 44, no. 15 (2017): 8065–74. http://dx.doi.org/10.1002/2017gl073625.

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7

Koteswaram, P. "Upper level 'Lows' in low latitudes in the Indian Area during SW Monsoon season and 'Breaks' in the monsoon." MAUSAM 1, no. 2 (2022): 162–64. http://dx.doi.org/10.54302/mausam.v1i2.4559.

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8

MUKHERJEE, AK, and G. NATARAJAN. "Westward moving sea level low pressure systems in the south Bay of Bengal during southwest monsoon." MAUSAM 19, no. 3 (2022): 285–88. http://dx.doi.org/10.54302/mausam.v19i3.5325.

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The movement of low pressure systems from the east, across south Bay of Bengal and south Indian Peninsula, during July and August, when the southwest monsoon has established itself over India has been studied for a 20-year period from 1946 to 1965, Only well marked systems, which could be delineated on the sea level synoptic chart, are reported In the present paper, The characteristics of these systems and its relation with other systems breaks in southwest monsoon etc are discussed.
 
 The effect of migratory lows on rainfall has been studied for Madras State, Kerala and coastal Mys
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9

Yanase, Wataru, Hiroshi Niino, Shun-ichi I. Watanabe, et al. "Climatology of Polar Lows over the Sea of Japan Using the JRA-55 Reanalysis." Journal of Climate 29, no. 2 (2016): 419–37. http://dx.doi.org/10.1175/jcli-d-15-0291.1.

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Abstract Polar lows are intense meso-α-scale cyclones that develop over the oceans poleward of the main baroclinic zone. A number of previous studies have reported polar low formation over the Sea of Japan within the East Asian winter monsoon. To understand the climatology of polar lows over the Sea of Japan, a tracking algorithm for polar lows is applied to the recent JRA-55 reanalysis. The polar low tracking is applied to 36 cold seasons (October–March) from October 1979 to March 2015. The polar lows over the Sea of Japan reach their maximum intensity on the southeastern side of the midline
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10

MOHAPATRA, M. "Relative contribution of synoptic systems to monsoon rainfall over Orissa." MAUSAM 58, no. 1 (2021): 17–32. http://dx.doi.org/10.54302/mausam.v58i1.1125.

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ABSTRACT. The low/depression over northwest (NW) Bay of Bengal is the largest contributor to seasonal monsoon rainfall over all stations in Orissa and Orissa as a whole. The Low Pressure Systems (LPS) and cyclonic circulation (cycir) extending upto 500 hPa level over NW Bay of Bengal alone contribute about 22% to the seasonal monsoon rainfall through about 12 days. The monsoon trough without any significant embedded systems over Orissa and adjoining regions contributes about 28% to seasonal rainfall through about 55 days. All types of LPS including low, depression and cyclonic storm yield maxi
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