Climate Change And Engineering Essay

In the late summer of 2005, a terrible tragedy occurred that changed the lives of many in the south-east region of the United States. A Category 3, named storm, named Hurricane Katrina, hit the Gulf Coast on the 29th of August and led to the death of 1,836 and millions of dollars’ worth of damage (Waple 2005). The majority of the damage occurred in New Orleans, Louisiana. Waple writes in her article that winds “gusted over 100 mph in New Orleans, just west of the eye” (Waple 2005). Not only was the majority of the damage due to the direct catastrophes of the storm but also city’s levees could no longer hold thus breaking and releasing great masses of water. Approximately, 80% of the city was submerged at sea level. Despite the vast amount

Katrina hit New Orleans, Louisiana on August 29th, 2005, but the failure of the government started before this day “by allowing building and growing in areas in low flood lands.” The government did not regulate these land areas that have always been at a threat for flooding and natural disaster, which was ignored by the government and public, and was in place, still a place for growing infrastructure. Failures included by the author of the national agencies include design limits that can lead to levees being overtopped by flood and hurricane events that are larger than they were designed for and design flaws and construction and maintenance shortcomings that lead to protective works being breached when they cannot stand up to the forces exerted by large flood and hurricane events. The author also points out the problems with the hundred-year flood event, which only has a one percent chance of happening every year. When the NFIP focuses on this possible catastrophe, it losses the

The most significant implementations that were put into effect to protect the city of New Orleans were the levee and floodwall systems. Floodwalls are just as they appear to be. They are vertical walls that serve as barriers, in this case surrounding the city of New Orleans that is vulnerably sinking below sea level, in attempt to contain a river or waterway and prevent water from flooding the city. These floodwalls created a “fishbowl” effect, “with the water on the outside and half a million homes on the inside” (Flynn et al). However, the walls

In the year 2005, New Orleans was famously hit a major natural disaster that took lives and destroyed the homes and civilians. This wrath of Mother Nature became to be known as Hurricane Katrina, a category 5 hurricane with gusts peaking at 174/mph according to the Safir- Simpson wind scale (SSHS). With this Hurricane having its path directly on a city only being on average 1-2 feet below sea level, it created conditions for serious havoc (NOAA, 2012). The aftermath left a serious physical imprint on the city, which has the potential to never be removed. This imprint left by Hurricane Katrina caused extensive damage to 134,000 housing units, destroying multiple bridges along the Gulf Coast, as well as various buildings across the city, which led to harmful chemicals leaking into the water system, such as petroleum and natural gas. Finally, Hurricane Katrina also caused the main power grid to be disoriented for a number of weeks. As a result, the damage costs from the storm added up to be about $108 billion (2005 USD), which according to Eric Blake was the costliest storm ever to hit the United States (Blake et al. 2011). Hurricane Katrina perpetuated all of these tribulations, as it drastically altered the lives of the many inhabitants of New Orleans and they continue to face the repercussions of the storm in their day-to-day lives.

Levees were implemented as the primary form of protection from the bodies of water surrounding the city. Moreover, officials recognized these structures were critical to protecting the city’s inhabitants given the city’s topography. However, a confluence of factors led to projects that were more immediately profitable being a top priority while simultaneously allowing the infrastructure critical to protecting the city deteriorate. Because of decisions to postpone upgrades and maintenance, the city’s chances of withstanding a hurricane of Katrina’s magnitude were decreased. Ultimately, the levee breaches caused the city’s destruction.

Hurricane Katrina hit the southeastern coast of the United States in August of 2005. The eye of the storm went through the city of New Orleans and caused thousands of casualties and more than eighty billion dollars in damage (Schwartz). However, poor engineering and design allowed the immense flooding to breach the levee system and flood most of the metropolitan area. Despite the Delta Service Corps admitting that they knew of the possible failures for over twenty years, they claimed that insufficient budgets set by Congress and local governments prohibited them from restructuring and preserving the levees (Can We Save New Orleans?). Katrina was the third most intense land falling tropical storm in United States history. The combination of

Hurricane Katrina was not New Orleans’ first time being hit with devastating effects from a hurricane. New Orleans has been struck by hurricanes six times over the past century. In 1915 was a category 4 hurricane, it killed 275 people and caused millions of dollars’ worth of damage. 1940, 1947, 1965, 1969 and again in 2005. The Mayor of New Orleans issued a first ever mandatory evacuation. With New Orleans being hit multiple times over the past decade surprised me that serious precautions weren’t taken previously, such as better levees or seawalls. Living in a place below sea level, one would think that the levees and seawalls would be stronger, but the levees collapsed below design height during the Katrina storm .

It is inevitable that the coast is sinking due to rising sea levels and sediment erosion caused by storms or nature. With that in mind it is imperative that lessons learned from previous encountered storms and floods should move engineers to redesign entirely a new format of construction of the levees, as well as aid in saving as much of the coast that can be recovered and cut the losses of area now under sea level. After Katrina much effort was focused on quickly recovering the locations that were in dire need of rescue. Sandbags were placed in several locations and in others pumps were used to redirect flooding and allow for immediate repair of the levees. Following Katrina eight years after, at least $14.5 billion was invested in a storm protection system that consisted of high-quality built levees, floodwalls, and efficient pumps for drainage. In 2012, Hurricane Issac would be the test to see if all would stay intact and perform as designed, and it did. Both the State of Louisiana and the United States Army Corps of Engineers recognized that the new system was holding well, however it did not eliminate the risk. Therefore, the State of Louisiana and the United States Corp of Engineers initiated work under way in strategizing for future risk reduction efforts for both the levees and restoration of the coast. As a result of their initiated work, the State of Louisiana’s 2012 Coastal Master

The failure to adequately prepare for the storm led to increased and more widespread devastation, which in many cases harmed those living in the affected areas. An independent analysis of the reason for such massive chaos was performed and determined that “Most of the damage was due to the failure of the levee system that surrounds the city to protect it from flooding” (Ubilla). Had these levees been properly built, and had there been more of them protecting the city of New Orleans, major flooding could have potentially been lessened. A simple feature of the levee structure which engineers neglected to include is the concrete

The City of New Orleans, Louisiana was particularly vulnerable to the ramifications of Hurricane Katrina. Despite all of the forewarnings, determinants such as socioeconomic status influenced resident’s ability to evacuate their homes. Additionally, topography of the region increased the capability for destruction as nearly half of the city, on average, lays six feet below sea level and is surrounded by water.

The burning of fossil fuels such as coal and oil, and deforestation over the last 200 years has caused the concentrations of heat-trapping "greenhouse gases" to increase significantly in our atmosphere. These gases prevent heat from escaping to space. Greenhouse gases are necessary in our lives as they help in keeping the planet 's surface warmer than it would otherwise be. But, as the concentrations of these gases continue to increase in the atmosphere, the Earth 's temperature is climbing above past levels (USEPA, 2014).

Scientific evidence suggests that human activity like agriculture, urbanization and industrialization have influenced climate change. Clearing land and building cities up for agriculture results in changing the climate. This is because the population is increasing rapidly and the demand to use fossil fuels in our everyday life is also increasing. Increasing use for fossil fuels, industrialization and deforestation has a huge impact on the climate. Enhanced greenhouse gases are an increase in natural greenhouse gases impacted by mankind. The major cause of greenhouse gases is the increase in carbon dioxide, methane and nitrous oxide being released in the atmosphere. If greenhouse gases continue to be produced at the same rate as it did in 2000, then there will be a 0.1-degree change in temperature per decade. This isn’t likely to happen though because of the dramatic need for fossil fuel.

The earth’s climate is predicted to change because human activities are altering the chemical composition of the atmosphere through the buildup of greenhouse gases –– primarily carbon dioxide, methane, and nitrous oxide. The heat-trapping property of these gases is undisputed. Although uncertainty exists about exactly how earth’’s climate responds to these gases, global temperatures are rising. Go to the Emissions section for much more on greenhouse gases.

According to a recent study, humans having been causing global warming for about 180 years. The study reconstructed 500 years of climate to determine when the warming shift started. They found that the earliest stages of human-caused greenhouse warming began in the Industrial Revolution, mainly around the 1830s in the Arctic and tropical oceans, followed by change in North America, Europe, and Asia. At this time in human history, we has started burning fossil fuels like coal. This was used to power factory machines, and steam engines used in trains and steamboats. Fossil fuels originate from the remains of ancient plants and animals, and when burned, release carbon-dioxide and other greenhouse gases in the

The issue of global warming should be on the list of our top priorities. Studies show that the average of global temperatures have risen since the Industrial Revolution began. Since the Industrial Revolution, human emissions has quadrupled the frequency of certain heat extremes and many scientists have warned that a failure to bring greenhouse gases under control could eventually lead to a 62-fold increase in extreme heat blasts (Gillis Justin A17). Most of the increase is due to human activities, especially the burning of fossil fuels and deforestation. These activities contribute to a build-up in carbon dioxide and other gases in Earth’s atmosphere. The Earth’s atmosphere is made of gases like nitrogen, carbon dioxide and oxygen. These gases act as a blanket that covers and gives us warmth, but once these gases such as carbon dioxide absorbs heat, but does not release it back into space in which causes the increase in global temperature. This is called the greenhouse effect because it only traps heat but does not release it.