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Storm Surges - Science topic
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Questions related to Storm Surges
Climate Change and Extreme Rainfall in Indian Coastal Cities
Which of the following Indian coastal cities may get impacted extremely resulting from climate change?
Mumbai, Panaji, Mangaluru, Kozhikode, Kollam, Nagercoil Chennai, Ongole, Kakinada, Vizag, Brahmapur, Puri & Digha
Which of above Indian coastal cities are more at risk of floods resulting from exposure to multiple flood drivers including extreme high tide, storm surge, extreme rainfall and high river flow?
And, in which of the above coastal cities, compound flood events would occur, upon various flood driving factors coinciding in space and time?
Which of above Indian coastal cities are poised to Jacking Effect of high tide that would possibly prevent urban flooding from being discharged into the sea through the drainage network, and thereby reducing the drainage capacity of the coastal urban drainage network, upon the occurrence of high tides?
Will the impacts of flooding in these low-lying, densely populated, and highly developed cities could remain to be devastating with wide-ranging social, economic and environmental consequences – at any point of time – in the near future – resulting from current climate change?
In the above listed cities, where could we expect the coupled effect of both storm surges and extreme rainfall resulting from climate change – that may possibly lead to (severe) flooding in those coastal areas?
How exactly to go about assessing the spatio-temporal dynamics of the meteorological drivers of compound flooding along those Indian coastal cities?
Whether the concept of Compound Flooding has already been assessed – on a local scale - for ALL of the above coastal cities as a precautionary measure?
Are we in a position to project the likelihood of the joint occurrence of storm surge & extreme rainfall in the above coastal cities individually?
Have we studied the probability of co-occurrence of extremes in meteorological tide and in rainfall in Indian coastal cities that provides insight into large-scale rainfall-driven compound flooding in low-lying coasts and compound flooding in estuaries of small-size and medium-size rivers?
How many of the above Indian coastal cities are in estuarine regions? In those estuarine regions, whether such compound flooding could elevate water levels to a point, where flooding gets initiated?
How many of the above Indian coastal cities are poised to a situation, where, a destructive storm surge already causing widespread water-flooding – even, in the absence of extreme rainfall?
Of course, with an additional extreme rainfall (from climate change), to what extent, in those cities, the flood depth will further get increased and to what extent, the areal extent of the inundated area will further get spreading?
How many of the above Indian coastal cities are poised to a situation, where, a combination of moderate storm surge with an extreme rainfall event would cause flooding?
Have we so far deduced the interdependency between storm surge and extreme rainfall in the above Indian coastal cities as a function of highest annual storm surge, highest daily rainfall, highest annual rainfall & highest storm surge (using copula theory/Kendall’s rank correlation coefficient)?
What kind of variations that have been observed in the dependency between storm surge and extreme rainfall among various Indian coastal cities? How have they altered the flood risk so far? And, how would it alter the flood risk in the future?
Do we have dynamic maps of sea-level pressure and winds towards identifying the prevailing synoptic weather situations that may probably cause compound flooding in ALL Indian coastal cities?
Suresh Kumar Govindarajan, Professor [HAG]
IIT Madras, 22-Dec-2024
INRE: "Do we have dynamic maps of sea-level pressure and winds ..."
The Copernicus 'MyOcean Pro' has such data https://marine.copernicus.eu/
In our last monograph "A new paradigm of formation of accumulative relief in shallow areas of oceans and seas" (Ukrainian), the exogenous theory of the formation of underwater and above-water accumulative bottom relief forms is called into question. Look at the photo of the strait between the Sea of Azov and the Black Sea. In the Sea of Azov, the level is higher (two rivers flow into it) and storm surges often occur both from the north and from the south. Very often current velocities exceed 100 cm/s. Based on the exogenous theory, there should not be sandy islands (spits) in the strait. They exist contrary to the exogenous theory of the formation of the bottom relief of shallow waters. The storm theory of bottom relief formation cannot explain why the accumulative bottom relief forms are stable for hundreds of years. This can be seen by looking at the bathymetric maps of the Sea of Azov made 200 years later. Please comment and ask questions.
I am interested in storm surge simulation modeling using Numerical Technique and searching for a suitable numerical error analysis technique.
What are the limitations of radiation type boundary conditions at the open sea? Especially, when we are going to model (simulation) storm surge/tsunami.
Although determining the origin of sand storms on the Earth as well as possible, But it is difficult for dust storms. Because this storm covers a large surface area and the specific days, and also dust storms do not always originate from sand dunes.
Storm surge prediction is related to estimating inundation area.
Hi, I would like to know where can I get historic global/national (preferably USA) level time-series data for the following (preferably gridded data)?
Flood, Drought, Max temperature, Min temperature, Hurricane, Tornado, Earthquake, Wind, Severe storm, Winter days, Wildfire, Precipitation, Sea level rise, Storm surge, Fog, Hail, Lightning, Landslide, Volcano, Tsunami
I am aware of computational costs while working with high resolution data, so this question is more of hypotetical nature and is related to the relevance of friction parameter in inundation modeling. The question is also software(model)-dependent.
Storm surge problem along the coast of Bangladesh
I need to model the joint dependency between storm surge and rainfall observations using the time-varying or Bayesian dynamic copula approach for the assessments of the coastal flood risk. Actually, in this research, we need to account the impact of sea-level rise (or SLR) due to global warming or climate change, over the joint dependence structure between storm surge and rainfall. Can I use SLR an explanatory covariate with the marginal distribution and copula dependence parameters using the above-mentioned bivariate framework? Is this research approach is feasible or significant?
I am investigating storm surge problem along the coast of Bangladesh.
In the COVID-19 infection, the main issues are not brought by the virus itself, but by our bodies' excessive immunological response to the infected organs - the cytokine storm. This cytokine storm destroys all cells near the focus of infection and kills the respiratory system. So is there any natural non-aggressive way to prevent the cytokine storm from happening in the severe COVID-19 cases?
Thank you in advance for your valuable opinions!
We want to model hydrodynamics and currents in any sea and shallow water region. And also, we want to model rip currents and storm surges in shallow water.
In several countries, Civil Engineers work for the disaster(flood, cyclone/typhoon/hurricane, tsunami, storm surges) preparation, mitigation and disaster risk reduction. In Bangladesh, I found something different and mostly social scientists are evolving for the disaster resilience even though in academy.
Dear Colleagues/Researchers,
I'm trying to find out the physics how a fast and slow (separately) moving Hurricane/Tropical Cyclone/Typhoon influence storm surge generation. But so far I haven't found any detail explanation except some generalized statements.
Dear colleagues,
we are looking for long-term (more than a decade) datasets of research quality Sea Surface Height data for the Mediterranean Sea.
Specifically we are interested in high-frequency (e.g. hourly, 3-hourly or daily) sea level elevation (not mean sea level anomalies) measurements from tide gauges anywhere in the Mediterranean Sea. The time frame could cover any period from 1970 to the present.
Storm Surge and non-tidal components of Sea Level Elevation are going to be extracted from them.
Any hint on relevant websites, services and available databases is greatly appreciated.
Best regards,
Chris Makris
I wanted to observe the rotational velocity of the Hurricane which was reported to be around 175mph, but when I looked at reanlysis products like ERA Interim or 20CRV2C the maximum wind speed I can get is about 45mph, why is the speed in the reanalysis products so low. Or is just that they are measuring different speeds?
Currently I am using regular rectangular shaped Cartesian grid for the simulation of flow & storm surge model. An irregular shaped grid would give a better validation for the model run.
Dear all,
Is there anyone who experienced problem in merging global and local bathymetry dataset?
When extracted depth of GEBCO or ETOPO dataset reach to measured depth, I meet a difference of 2000 m in deep water and at least 100 m in shallow waters. Such differences make surge model results wrong.
How should I face with this issue?
(Measured depth are available in a distance of 10 km from shoreline. For the rest parts, global dataset is utilized. Moreover, the area cannot be considered smaller, since it should cover the cyclone track).
Thanks in advance for your help,
I am looking for good reasons, beyond the obvious ones (e.g. computational efficiency), to use only 2d flow models for storm surge forecasting. We have nowadays quite sophisticated modeling environments in 3d but most of the storm surge model are at it's best 2d coupled to phase average wave models.
I like to say in advance that I do not think efficiency is a constraint anymore, especially not, if u consider the significance of this hazard for the coastal community.
I am working on some future projections of Hurricane-induced Storm Surges. I want to model the surges under different scenarios for 1.5 degrees and 2.0 degrees increase in the global/regional temperature. My study area is North America (Gulf of Mexico and East Coast in particular).
Any guidance and help will be much appreciated.
What are some current research paper on storm surge modeling?
In what ways can the federal, state, local governments and its responders can be prepared.
I'm studying on a low-lying coastal region where experiences situations that the intense rainfall could induce severe flooding in vast regions . In these events I'm going to distinguish between the rain-fall waters and the sea waters from some satellite imageries such as LandSat or ASTER. Do you have any experience in this regard?
Hi, all
I am trying to simulate storm surge and inland inundation along the region of Bay of Bengal using ADCIRC model . Is there a way to get the required information for preparing the fort.14 and fort. 22 files from open sources or commercial.
How can I get the details about the maximum wind speed radius (R Max) for storm surge modelling. I have download the cyclone tracks and I have generate the cyclone wind generation to storm surge model for that I need the R.max value inputs for Young and Sobey model.
I have some tide gauge records (several months) recorded in a semi enclosed basin and need to know the surge fluctuations. I tried T-Tide package to separate tide and surge, but it seems that there are some de-tiding errors in the residuals. Could you please introduce me another software package, code to use?
