scholarly journals Analyzing Trend of Tropical Cyclone Activity Along Odisha Coast, India

2020 ◽  
Author(s):  
Manoranjan Mishra ◽  
Namita Pattnaik ◽  
Manoj Kumar Dash ◽  
Dambaru Ballab Kattel ◽  
Shailendra Kumar Mishra
Keyword(s):  
Tropical Cyclone ◽  
Tropical Cyclones ◽  
Economic Loss ◽  
Graphical Form ◽  
Coastal Zones ◽  
Cyclone Activity ◽  
Policy Makers ◽  
Odisha Coast ◽  
Linear Regressions ◽  
Metrological Department

Abstract A general perception among scientific community and policy makers of developing countries exists that intensity and frequency of tropical cyclones are increasing over time due to climate change and global warming. In the present study, we have tried to investigate the trend and variability of tropical cyclone landfall along the Odisha coast, India. The data pertaining to landfall of the tropical cyclones were collected from Indian Metrological Department and were further filtered using Gaussian filter. The results were plotted in graphical form. Correlation and linear regressions analyses were carried out. The results highlight that the frequency and intensity of tropical cyclone exhibit a decreasing trend. It can be thus be inferred that growing economic loss and loss of lives are due to growing exposure of unplanned population settlements and business investments to extreme events. Therefore socio-economic landscapes need to be adjusted to the landfall of cyclone than blaming natural forces for the loss of lives and properties. Findings of the present study may help policy makers devising future policies in coastal zones.

scholarly journals Tracking Scheme Dependence of Simulated Tropical Cyclone Response to Idealized Climate Simulations

2014 ◽  
Vol 27 (24) ◽  
pp. 9197-9213 ◽  
Author(s):  
Michael Horn ◽  
Kevin Walsh ◽  
Ming Zhao ◽  
Suzana J. Camargo ◽  
Enrico Scoccimarro ◽  
...  
Keyword(s):  
Tropical Cyclone ◽  
Tropical Cyclones ◽  
General Circulation ◽  
Climate Model ◽  
Circulation Model ◽  
General Circulation Models ◽  
Tropical Cyclone Activity ◽  
Model Data ◽  
Cyclone Activity ◽  
Sensitivity Testing

Abstract Future tropical cyclone activity is a topic of great scientific and societal interest. In the absence of a climate theory of tropical cyclogenesis, general circulation models are the primary tool available for investigating the issue. However, the identification of tropical cyclones in model data at moderate resolution is complex, and numerous schemes have been developed for their detection. The influence of different tracking schemes on detected tropical cyclone activity and responses in the Hurricane Working Group experiments is examined herein. These are idealized atmospheric general circulation model experiments aimed at determining and distinguishing the effects of increased sea surface temperature and other increased CO2 effects on tropical cyclone activity. Two tracking schemes are applied to these data and the tracks provided by each modeling group are analyzed. The results herein indicate moderate agreement between the different tracking methods, with some models and experiments showing better agreement across schemes than others. When comparing responses between experiments, it is found that much of the disagreement between schemes is due to differences in duration, wind speed, and formation-latitude thresholds. After homogenization in these thresholds, agreement between different tracking methods is improved. However, much disagreement remains, accountable for by more fundamental differences between the tracking schemes. The results indicate that sensitivity testing and selection of objective thresholds are the key factors in obtaining meaningful, reproducible results when tracking tropical cyclones in climate model data at these resolutions, but that more fundamental differences between tracking methods can also have a significant impact on the responses in activity detected.

The Track Integrated Kinetic Energy of Atlantic Tropical Cyclones

2013 ◽  
Vol 141 (7) ◽  
pp. 2383-2389 ◽  
Author(s):  
V. Misra ◽  
S. DiNapoli ◽  
M. Powell
Keyword(s):  
Tropical Cyclone ◽  
Kinetic Energy ◽  
Tropical Cyclones ◽  
Warm Pool ◽  
Equatorial Pacific ◽  
Interannual Variations ◽  
Tropical Atlantic ◽  
Cyclone Activity ◽  
Atlantic Warm Pool ◽  
Atlantic Tropical Cyclone

Abstract In this paper the concept of track integrated kinetic energy (TIKE) is introduced as a measure of seasonal Atlantic tropical cyclone activity and applied to seasonal variability in the Atlantic. It is similar in concept to the more commonly used accumulated cyclone energy (ACE) with an important difference that in TIKE the integrated kinetic energy (IKE) is accumulated for the life span of the Atlantic tropical cyclone. The IKE is, however, computed by volume integrating the 10-m level sustained winds of tropical strength or higher quadrant by quadrant, while ACE uses the maximum sustained winds only without accounting for the structure of the storm. In effect TIKE accounts for the intensity, duration, and size of the tropical cyclones. In this research, the authors have examined the seasonality and the interannual variations of the seasonal Atlantic TIKE over a period of 22 yr from 1990 to 2011. It is found that the Atlantic TIKE climatologically peaks in the month of September and the frequency of storms with the largest TIKE are highest in the eastern tropical Atlantic. The interannual variations of the Atlantic TIKE reveal that it is likely influenced by SST variations in the equatorial Pacific and in the Atlantic Oceans. The SST variations in the central equatorial Pacific are negatively correlated with the contemporaneous seasonal (June–November) TIKE. The size of the Atlantic warm pool (AWP) is positively correlated with seasonal TIKE.

Hurricane “Amanda”: Rediscovery of a Forgotten U.S. Civil War Florida Hurricane

2013 ◽  
Vol 94 (11) ◽  
pp. 1735-1742 ◽  
Author(s):  
M. Chenoweth ◽  
C. J. Mock
Keyword(s):  
United States ◽  
Civil War ◽  
Tropical Cyclone ◽  
Natural Disaster ◽  
Tropical Cyclones ◽  
Tropical Cyclone Activity ◽  
Cyclone Activity ◽  
Major Hurricane ◽  
The U.S ◽  
States History

Among the most unusual and unexpected hurricanes in United States history is the only hurricane to make landfall in the month of May. This recently rediscovered storm that struck northwest Florida on 28 May 1863 created a natural disaster in the area that became lost to history because it was embedded in a much larger and important manmade event—in this case, the U.S. Civil War. The authors document the arrival of this storm both historically and meteorologically and anachronistically name it “Hurricane Amanda” in honor of the Union ship driven ashore by the hurricane. The hurricane revealed deficiencies and strengths in combat readiness by both sides. Meteorologically, the storm nearly achieved major hurricane status at landfall and its absence from modern databases of tropical cyclone activity is a useful reminder to users of important gaps in our knowledge of tropical cyclones even in the best-sampled storm basins.

Recent migration of tropical cyclones toward coasts

Science ◽  
2021 ◽  
Vol 371 (6528) ◽  
pp. 514-517 ◽  
Author(s):  
Shuai Wang ◽  
Ralf Toumi
Keyword(s):  
Tropical Cyclone ◽  
Trend Analysis ◽  
Tropical Cyclones ◽  
Tropical Cyclone Activity ◽  
Maximum Intensity ◽  
Coastal Regions ◽  
Cyclone Activity ◽  
Steering Flow ◽  
Annual Frequency ◽  
Tropical Cyclone Tracks

Poleward migrations of tropical cyclones have been observed globally, but their impact on coastal areas remains unclear. We investigated the change in global tropical cyclone activity in coastal regions over the period 1982–2018. We found that the distance of tropical cyclone maximum intensity to land has decreased by about 30 kilometers per decade, and that the annual frequency of global tropical cyclones increases with proximity to land by about two additional cyclones per decade. Trend analysis reveals a robust migration of tropical cyclone activity toward coasts, concurrent with poleward migration of cyclone locations as well as a statistically significant westward shift. This zonal shift of tropical cyclone tracks may be mainly driven by global zonal changes in environmental steering flow.

Passage of Tropical Storm Allison (2001) over southeast Texas recorded in δ18O values of Ostracoda

2008 ◽  
Vol 70 (2) ◽  
pp. 339-342 ◽  
Author(s):  
James R. Lawrence ◽  
Kiseong Hyeong ◽  
Rosalie F. Maddocks ◽  
Kwang-Sik Lee
Keyword(s):  
Tropical Cyclone ◽  
Oxygen Isotope ◽  
Tropical Cyclones ◽  
Tropical Cyclone Activity ◽  
Tropical Storm ◽  
Low Oxygen ◽  
Cyclone Activity ◽  
Southeast Texas

AbstractFreshwater Ostracoda collected in ephemeral pond-waters derived from Tropical Storm Allison (2001, Texas) recorded the unusually low oxygen-isotope values of that storm. Therefore, the potential clearly exists, in locations where tropical cyclones make landfall, to obtain a long-term record of tropical cyclone activity from fossil ostracode calcite.

scholarly journals Tropical Cyclones and Transient Upper-Ocean Warming

2008 ◽  
Vol 21 (1) ◽  
pp. 149-162 ◽  
Author(s):  
Claudia Pasquero ◽  
Kerry Emanuel
Keyword(s):  
Tropical Cyclone ◽  
Tropical Cyclones ◽  
Heat Content ◽  
Ocean Model ◽  
Ocean Heat Content ◽  
Upper Ocean ◽  
Cyclone Activity ◽  
Upper Ocean Heat Content ◽  
Vertical Temperature Profile ◽  
Thermodynamic Conditions

Abstract Strong winds affect mixing and heat distribution in the upper ocean. In turn, upper-ocean heat content affects the evolution of tropical cyclones. Here the authors explore the global effects of the interplay between tropical cyclones and upper-ocean heat content. The modeling study suggests that, for given atmospheric thermodynamic conditions, regimes characterized by intense (with deep mixing and large upper-ocean heat content) and by weak (with shallow mixing and small heat content) tropical cyclone activity can be sustained. A global general circulation ocean model is used to study the transient evolution of a heat anomaly that develops following the strong mixing induced by the passage of a tropical cyclone. The results suggest that at least one-third of the anomaly remains in the tropical region for more than one year. A simple atmosphere–ocean model is then used to study the sensitivity of maximum wind speed in a cyclone to the oceanic vertical temperature profile. The feedback between cyclone activity and upper-ocean heat content amplifies the sensitivity of modeled cyclone power dissipation to atmospheric thermodynamic conditions.

scholarly journals West African Storm Tracks and Their Relationship to Atlantic Tropical Cyclones

2007 ◽  
Vol 20 (11) ◽  
pp. 2468-2483 ◽  
Author(s):  
Susanna B. Hopsch ◽  
Chris D. Thorncroft ◽  
Kevin Hodges ◽  
Anantha Aiyyer
Keyword(s):  
Tropical Cyclone ◽  
West Africa ◽  
Tropical Cyclones ◽  
Storm Track ◽  
Meridional Wind ◽  
Tropical Cyclone Activity ◽  
West African ◽  
Storm Tracks ◽  
Tropical Atlantic ◽  
Cyclone Activity

Abstract The automatic tracking technique used by Thorncroft and Hodges has been used to identify coherent vorticity structures at 850 hPa over West Africa and the tropical Atlantic in the 40-yr ECMWF Re-Analysis. The presence of two dominant source regions, north and south of 15°N over West Africa, for storm tracks over the Atlantic was confirmed. Results show that the southern storm track provides most of the storms that reach the main development region where most tropical cyclones develop. There exists marked seasonal variability in location and intensity of the storms leaving the West African coast, which may influence the likelihood of downstream intensification and longevity. There exists considerable year-to-year variability in the number of West African storm tracks, both in numbers over the land and continuing out over the tropical Atlantic Ocean. While the low-frequency variability is well correlated with Atlantic tropical cyclone activity, West African rainfall, and SSTs, the interannual variability is found to be uncorrelated with these. In contrast, variance of the 2–6-day-filtered meridional wind, which provides a synoptic-scale measure of African easterly wave activity, shows a significant, positive correlation with tropical cyclone activity at interannual time scales.

scholarly journals The Centennial Variation of El Niño Impact on Atlantic Tropical Cyclones

2018 ◽  
Vol 22 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Ruixin Yang ◽  
Allison Fairley ◽  
Wonsun Park
Keyword(s):  
Tropical Cyclone ◽  
Tropical Cyclones ◽  
El Niño ◽  
El Nino ◽  
Southern Oscillation ◽  
Tropical Cyclone Activity ◽  
Cyclone Activity ◽  
Factors Affecting ◽  
Work Related ◽  
Atlantic Tropical Cyclone

Abstract Predicting tropical cyclone (TC) activity becomes more important every year while the understanding of what factors impact them continues to be complicated. El Niño–Southern Oscillation (ENSO) is one of the primary factors impacting the activities in both the Pacific and the Atlantic, but an extensive examination of the fluctuation in this system has yet to be studied in its entirety. This article analyzes the ENSO impacts on the Atlantic tropical cyclone activity during the assessed warm and cold years to show the dominant centennial-scale variation impact. This study looks to plausibly link this variation to the Southern Ocean centennial variability, which is rarely mentioned in any factors affecting the Atlantic tropical cyclone activity. This centennial variability could be used to enhance future work related to predicting tropical cyclones.

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