Hurricane Katrina was one of the worst hurricanes in America but far more the worst natural disaster in the country’s history, having begun as a tropical depression escalating to a tropical storm making landfall in Louisiana on August 29 at wind speeds of 201 km per hour. In the Atlantic belt, the name hurricane applies to tropical cyclones that form between April and October due to the warm waters of the ocean. In 2005, the intensity of tropical cyclone formation was higher than usual due to the temperatures being warmer than preceding years. As one of the worst hurricanes, it first had a six-meter ocean surge ascertaining the possibility of flooding the coastline when it made landfall in addition to the heavy downpour. Secondly, the propensity of the tragedy was increased by the placement of New Orleans where it is 2meters below sea level. It is surrounded by levees, both manmade and natural. The city is between the Mississippi and Lake Pontchartrain where the ocean surge brought by the storm is likely to top both the two waterfronts and spill into the city. The 29th landfall in Louisiana had been preceded by a three-day evacuation where one million people had been removed from the coastline regions likely to flood. This accounted for 80 percent of the population. There were social divisions and desegregation created by the evacuations and accompanying allegations of racism in rescue efforts. The storm went further to claim 1836 casualties and 185 billion dollars worth of damage. This excluded the cost of interruptions in the transportation along Mississippi and oil pipelines in the state. Eighty percent of the city was flooded with tremendous beach erosion was a detrimental environmental effect. The rescue operations where marred by incompetency that heavily contributed to the federal and state administration’s loss of support from the residents eventually culminating in their ousting.
National Hurricane Centre (NHC) reported on August 23 that Tropical Depression Twelve had formed over the south-eastern Bahamas this was soon to be named hurricane Katrina, it was upgraded to a hurricane on the 25th of august, it hit land the same day lousi...
As with all the other cases of tropical storms in the Atlantic, even Hurricane Katrina started off as a minor disturbance in the pressure system, and eventually grew into one of the worst natural disasters that the planet was ever subjected to as it came across conditions favorable for its development.
Hurricane - as defined by the National Oceanic and Atmospheric Administration (NOAA), is a violent tropical storm which forms in the tropical waters when favorable conditions occur at any given point of time.
Basically, warm air acts as a fuel and helps the storm formation to fester into a full-fledged hurricane.
Causes of Hurricane Katrina
Hurricane Katrina began as a 'tropical depression' off the Bahamas coast on 23rd August, 2005.
(This was the moment when it was named Hurricane Katrina.) On 25th August, the storm system grew into a full-fledged hurricane and made its first landfall in Florida at 2230 UTC - with the winds blowing at the speed of 80 mph.
Sadly, 1836 people lost their lives as a result of the storm and more than 250,000 people were displaced from their homes (Hurricane Katrina, Graumann et al.)....
We also conclude that it is likely that climate warming will cause Atlantic hurricanes in the coming century have higher rainfall rates than present-day hurricanes, and medium confidence that they will be more intense (higher peak winds and lower central pressures) on average. In our view, it is uncertain how the annual number of Atlantic tropical storms will change over the 21st century. All else equal, tropical cyclone surge levels should increase with sea level rise as projected for example by . These assessment statements are intended to apply to climate warming of the type projected for the 21st century by prototype IPCC mid-range warming scenarios, such as A1B or RCP4.5.
Therefore, we conclude that despite statistical correlations between SST and Atlantic hurricane activity in recent decades, it is premature to conclude that human activity–and particularly greenhouse warming–has already caused a detectable change in Atlantic hurricane activity. (“Detectable” here means the change is large enough to be distinguishable from the variability due to natural causes.) However, human activity may have already caused some some changes that are not yet detectable due to the small magnitude of the changes or observation limitations, or are not yet confidently modeled (e.g., aerosol effects on regional climate).
When a hurricane makes a landfall, it often produces a strong storm surge that can reach 20 feet (6 meters) long and spread 100 miles (161 kilometers).Hurricanes cause catastrophic damage to coastlines and several hundred miles in land.
Sea level rise must also be considered as a way in which human-caused climate change can impact Atlantic hurricane climate–or at least the impacts of the hurricanes at the coast. The vulnerability of coastal regions to storm-surge flooding is expected to increase with future sea-level rise and coastal development, although this vulnerability will also depend upon future storm characteristics, as discussed above. All else equal, tropical cyclone surge levels should increase with sea level rise. There are large ranges in the 21st century projections for both Atlantic hurricane characteristics and for the magnitude of regional sea level rise along the U.S. coastlines. However, according to the , the average rate of global sea level rise over the 21st Century will very likely exceed that observed during 1971-2010 for a range of future emission scenarios.
While the current direction for seeking energy resources pay attention to clean and renewable energy, for instance, wind energy and solar energy, the technology is not yet widely spread in Louisiana because of the construction cost and the risk of damage by aggressive hurricanes....
Apart from greenhouse warming, other human influences conceivably could have contributed to recent observed increases in Atlantic hurricanes. For example, hypothesize that a reduction in aerosol-induced cooling over the Atlantic in recent decades may have contributed to the enhanced warming of the tropical North Atlantic, relative to global mean temperature. However, the cause or causes of the recent enhanced warming of the Atlantic, relative to other tropical basins, and its effect on Atlantic tropical cyclones, remains highly uncertain (e.g., ; ; ). A number of anthropogenic and natural factors (e.g., aerosols, greenhouse gases, volcanic activity, solar variability, and internal climate variability) must be considered as potential contributors, and the science remains highly uncertain in these areas. concluded that there is medium confidence that reduced aerosol forcing contributed to the observed increase in Atlantic tropical cyclone activity since the 1970s, but does not state any estimate of the magnitude of contribution. They also conclude that it remains uncertain whether there are any detectable changes in past tropical cyclone activity. Recent work (; see ) indicates that the latitude at which the maximum intensity of tropical cyclones occurs has expanded poleward globally in recent decades, although the causes for this have not been firmly established and a significant change was not seen in the Atlantic basin statistics.