Academic literature on the topic 'Mid-troposphere Cyclones'

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Journal articles on the topic "Mid-troposphere Cyclones"

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Esmaili, Rebekah, Christopher Barnet, Jason Dunion, Michael Folmer, and Jonathan Zawislak. "Evaluating Satellite Sounders for Monitoring the Tropical Cyclone Environment in Operational Forecasting." Remote Sensing 14, no. 13 (2022): 3189. http://dx.doi.org/10.3390/rs14133189.

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Tropical cyclones can form over open ocean where in situ observations are limited, so forecasters rely on satellite observations to monitor their development and track. We explore the utility of an operational satellite sounding product for tropical forecasting by characterizing the products retrieval skill during research flights. Scientists from both the NOAA-Unique Combined Atmospheric Processing System (NUCAPS) research team and tropical cyclone communities collaborated to target relevant tropical cyclones during the campaign. This effort produced 130 dropsondes that are well-timed with sa
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Croad, Hannah L., John Methven, Ben Harvey, Sarah P. E. Keeley, and Ambrogio Volonté. "The role of boundary layer processes in summer-time Arctic cyclones." Weather and Climate Dynamics 4, no. 3 (2023): 617–38. http://dx.doi.org/10.5194/wcd-4-617-2023.

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Abstract. Arctic cyclones are the most energetic weather systems in the Arctic, producing strong winds and precipitation that present major weather hazards. In summer, when the sea ice cover is reduced and more mobile, Arctic cyclones can have large impacts on ocean waves and sea ice. While the development of mid-latitude cyclones is known to be dependent on boundary layer (BL) turbulent fluxes, the dynamics of summer-time Arctic cyclones and their dependence on surface exchange processes have not been investigated. The purpose of this study is to characterise the BL processes acting in summer
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DAS, G. K., S. K. MIDYA, G. C. DEBNATH, and S. N. ROY. "The relationship between geopotential height and movement & landfall of tropical cyclone in the Bay of Bengal region." MAUSAM 63, no. 3 (2022): 469–74. http://dx.doi.org/10.54302/mausam.v63i3.1214.

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In this paper a simple relationship is employed to investigate relative impacts on the movement and landfall of tropical cyclone in the Bay of Bengal region when geopotential height of different troposphere levels is used as an input. Five tropical cyclone during pre-monsoon and post-monsoon season over the Bay of Bengal region has been selected for the study. The RS/RW data of coastal stations namely Kolkata (Dumdum), Dhaka, Agartala, Bhubaneswar, Visakhapatnam, Machlipatnam, Chennai and Karaikal has been collected for the period of the cyclones under study. The geopotential height of differe
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Zhang, Shuqin, Yuan Tang, Liwen Zhang, Qinghua Liao, and Tianyu Zhang. "Variations in Key Factors at Different Explosive Development Stages of an Extreme Explosive Cyclone over the Japan Sea." Atmosphere 14, no. 9 (2023): 1327. http://dx.doi.org/10.3390/atmos14091327.

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Explosive cyclones (ECs) occur frequently over the Japan Sea. The most rapidly intensifying EC over the Japan Sea during the 44-year period 1979–2022, in the cold season (October–April), was examined to reveal the variations in the key factors at different explosive development stages. The EC deepened at a maximum deepening rate of 3.07 bergerons and explosive development lasted for 15 h. At the initial moment of explosive development, the EC had distinctive low-level baroclinicity, the low-level water vapor convergence was weak, and mid-level cyclonic vorticity advection was far away from the
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Nicholls, M. E., and M. T. Montgomery. "An examination of two pathway to tropical cyclogenesis occurring in idealized simulations with a cloud-resolving numerical model." Atmospheric Chemistry and Physics Discussions 13, no. 1 (2013): 765–825. http://dx.doi.org/10.5194/acpd-13-765-2013.

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Abstract. Simulations are conducted with a cloud-resolving numerical model to examine the transformation of a weak incipient mid-level cyclonic vortex into a tropical cyclone. Results demonstrate that two distinct pathways are possible and that development along a particular pathway is sensitive to model physics and initial conditions. One pathway involves a steady increase of the surface winds to tropical cyclone strength as the radius of maximum winds gradually decreases. A notable feature of this evolution is the creation of small-scale lower tropospheric cyclonic vorticity anomalies by dee
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Nicholls, M. E., and M. T. Montgomery. "An examination of two pathways to tropical cyclogenesis occurring in idealized simulations with a cloud-resolving numerical model." Atmospheric Chemistry and Physics 13, no. 12 (2013): 5999–6022. http://dx.doi.org/10.5194/acp-13-5999-2013.

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Abstract. Simulations are conducted with a cloud-resolving numerical model to examine the transformation of a weak incipient mid-level cyclonic vortex into a tropical cyclone. Results demonstrate that two distinct pathways are possible and that development along a particular pathway is sensitive to model physics and initial conditions. One pathway involves a steady increase of the surface winds to tropical cyclone strength as the radius of maximum winds gradually decreases. A notable feature of this evolution is the creation of small-scale lower tropospheric cyclonic vorticity anomalies by dee
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Dolores-Tesillos, Edgar, and Stephan Pfahl. "Future changes in North Atlantic winter cyclones in CESM-LE – Part 2: A Lagrangian analysis." Weather and Climate Dynamics 5, no. 1 (2024): 163–79. http://dx.doi.org/10.5194/wcd-5-163-2024.

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Abstract. Future changes in extratropical cyclone structure and dynamics may lead to important impacts but are not yet fully understood. In the first part of this study, we have applied a composite approach together with potential vorticity (PV) inversion to study such changes in the dynamics of North Atlantic cyclones. Here, this is complemented with the help of a Lagrangian perspective, making use of air parcel trajectories to investigate the causes of altered PV anomalies as well as the role that cyclone airstreams play in shaping these changes. Intense cyclones in the extended winter seaso
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Evstigneev, Vladislav P., Valentina A. Naumova, Dmitriy Y. Voronin, Pavel N. Kuznetsov, and Svetlana P. Korsakova. "Severe Precipitation Phenomena in Crimea in Relation to Atmospheric Circulation." Atmosphere 13, no. 10 (2022): 1712. http://dx.doi.org/10.3390/atmos13101712.

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The increase in the frequency and intensity of hazardous hydrometeorological phenomena is one of the most dangerous consequences of climate instability. In this study, we summarize the data on severe weather phenomena using the data from 23 meteorological stations in Crimea from 1976 to 2020. Particular attention was paid to the precipitation phenomena descriptions. For the last 45 years, a significant positive trend of interannual variability of the annual occurrence of severe weather phenomena was estimated to be +2.7 cases per decade. The trend for severe precipitation phenomena was estimat
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Yang, Y. Q., Q. Hou, C. H. Zhou, H. L. Liu, Y. Q. Wang, and T. Niu. "Sand/dust storms over Northeast Asia and associated large-scale circulations in spring 2006." Atmospheric Chemistry and Physics Discussions 7, no. 3 (2007): 9259–81. http://dx.doi.org/10.5194/acpd-7-9259-2007.

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Abstract. This paper presents a study on the meteorological conditions that accompany the sand/dust storms (SDS) of East Asia in spring 2006, based on the SDS data collected both by WMO during 2000–2006 and by 2456 Chinese surface stations, and on the meteorological reanalysis data from NCEP-NCAR . The evolution of 3-D structures of the general circulations prevailed in both winter and spring as well as their annual anomalies were investigated by comparing the years having most and least occurrences of SDS between 2000 and 2006. It is found that spring 2006 featured a noticeably increased occu
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Xu, Li, and Zi-Liang Li. "Impacts of the Wave Train along the Asian Jet on the South China Sea Summer Monsoon Onset." Atmosphere 12, no. 9 (2021): 1227. http://dx.doi.org/10.3390/atmos12091227.

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The South China Sea (SCS) summer monsoon (SCSSM) onset signifies the commencement of large-scale summer monsoon over East Asia and the western North Pacific (WNP). Previous studies on the influencing factors of the SCSSM onset mainly focus on the tropical systems, such as El Niño-Southern Oscillation (ENSO). This study reveals that the wave train along the Asian jet could act as an extratropical factor to modulate the SCSSM onset, and it is largely independent of ENSO. The SCSSM onset tends to be earlier during the positive phase of the wave train (featured by northerly anomalies over Central
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Dissertations / Theses on the topic "Mid-troposphere Cyclones"

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Kushwaha, Pradeep. "A Tropical Survey of Mid-Tropospheric Cyclones, their Classification and Genesis over the Arabian Sea." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/6003.

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Middle Tropospheric Cyclones (MTCs) are moist synoptic tropical systems with vorticity maxima in the middle troposphere and weak signature in the lower troposphere. We begin with a tropical survey of MTCs; in South Asia, manual tracking reveals that MTCs change character during their life, i.e., their track is composed of MTC and LTC (lower troposphere cyclone) phases. The highest MTC-phase density and least motion is over the Arabian Sea, followed by the Bay of Bengal and the South China Sea. An MTC-phase composite shows an east-west tilted warm above deep cold-core temperature anomaly with m
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Book chapters on the topic "Mid-troposphere Cyclones"

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McGuire, Bill. "Storm force." In Geophysical and Climate Hazards: A Very Short Introduction, 3rd ed. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/actrade/9780192874535.003.0004.

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Abstract At the most basic level, windstorms involve the anomalously rapid movement of batches of air in the lower atmosphere, or troposphere, which is measured on the Beaufort Wind-force Scale. Windstorms have always been with us. Now, however, they are being supercharged by global heating so that their potential for destruction and loss of life is progressively escalating. Hurricanes, typhoons, and cyclones form in the tropics, taking their energy from the warm seas. Hurricanes are classified by wind speed using the Saffir-Simpson Hurricane Wind Scale. The most powerful category 5 storms hav
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Conference papers on the topic "Mid-troposphere Cyclones"

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Melfi, S. H., David Whiteman, Richard Ferrare, and Francis Schmidlin. "Comparison of Lidar and Radiosonde Measurements of Atmospheric Moisture Profiles." In Optical Remote Sensing of the Atmosphere. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/orsa.1990.tuc2.

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Atmospheric water vapor represents, arguably, the most important source of heat driving atmospheric circulation. In the tropics, it is responsible for the strong convection associated with the intertropical convergence zone thus establishing the Hadley circulation and the persistent trade winds. At mid-latitudes, moisture variation with altitude can destabilize the troposphere, setting up the potential for deep convection with boundary layer moisture fueling the resultant cyclone development and intensification. Moisture also plays an important role in global warming. Its anticipated increase
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