Effects of Natural Disasters on Evolution/Climate Change

Natural disasters can have a profound effect on climate change AND the gradual climate change can have an impact on natural disasters. It is essentially a positive feedback loop. The gradual increase in global temperature can, and quite possibly will, lead to an increase in:

Most experts feel as though our window of opportunity is closing and that Earth's future looks very very bleak.




Maarten K. van Aalst, a Dutch climatologist wrote a fairly good article that relates the El Niño events to the change in global climate. He stated that climate change due to increased carbon dioxide in the atmosphere will bring with it intense droughts and floods leading to decreased agricultural and rangeland productivity in drought- and flood-prone regions, as well as decreased hydro-power potential in drought-prone regions. He also said that there is evidence that the increase in carbon dioxide in the atmosphere has lead to a more frequent El Niño. This is obviously not good because you don't want extreme flooding or extreme droughts; you want a somewhat consistent climate so you can sustain agriculture. (El Niño events typically drench western South America but cause massive droughts in Indonesia, whereas the La Niña events cause flooding in Australia and Southeast Asia, but leave South America in a drought). The massive flooding of a region can cause a fairly distinct change in a population or in an entire ecosystem. Extreme weather patterns can even destroy entire species. The increase in these El Niño/La Niña events could be a major player in global climate change over the next few decades.

An increase in global temperature not only will affect the atmosphere but also the geology of the Earth itself. As glaciers melt, avalanches, floods, and increases in mud flow will become ever more common, especially in mountainous regions such as the Alps and Rockies. The resulting underwater landslides could lead to tsunamis. The increase volume of liquid water on the planet's crust will cause pressure changes that could potentially set off numerous volcanoes around the globe. This has been proven by the correlation between ice sheet mass and number of volcanic eruptions (Watts, 2012) There will also be a significant increase in the amount of methane gas present in the atmosphere as a result of ice melting in permafrost regions such as Siberia and northern Canada. The methane is stored in the rock but will be released as the ice melts and draws the gas to the surface. Another source of methane gas is the gas present on the ocean floor in methane hydrates; this is likely to increase in volume in the atmosphere due to underwater landslides caused by rising sea levels. The increase in methane gas will accelerate the global warming that is already present.


Specific Examples of Natural Disasters and Climate Change

To connect climate change with current events, there have been a lot of publications recently about Hurricane Sandy and the effect that climate change will have on all natural disasters, especially future hurricanes:

Sandy was a hybrid storm – a winter storm and a hurricane combination. Climate scientists do not currently understand how these hybrid storms will respond to climate change and global warming – but it is important that they figure it out quickly.

Current data and models indicate that a once-in-100-year hurricane would bring a 5.3 foot storm tide to the Battery, a 500-year hurricane would bring a 10.2 foot storm tide to the Battery. The storm tide that was caused by Sandy is that of a 1,000-year hurricane according to weather models.

Four climate models were used to compare the effects of simulated storms at the end of the 20th century with those conditions projected for the end of this century. The study found that two leading factors contributing to the increase in surge flooding is rising sea level and changes in hurricanes. Melting ice and the expansion of seawater as it warms is gradually increasing sea levels. Higher sea levels mean higher storm tides. The models predict a rise of 3.3 feet by the end of the century. When both sea level and the future of severe storms are taken into account, the models project much more frequent extreme surge flooding in the New York City area.

Since the storm hit an area typically not affected by hurricanes, it brought some much needed attention to why this storm occurred and how environmental issues could lead to more horrifying disasters.

Model of the perfect set-up for a Hybrid Storm




Here is some more information about Hybrid Storms

The Effects of "Man-Made" Disasters

  • Fukushima Nuclear Accident (albeit not a natural disaster, but a disaster)

The biological impacts of the Fukushima nuclear accident on the Pale Grass Blue Butterfly explored the effects of natural disasters on evolution and climate change. The butterfly was chosen because of its ability to be a great environmental indicator. The butterfly has impressive wing color patterns that are very sensitive to environmental changes. Due to the massive release of radioactive materials to the environment after the collapse of the power plant, many physiological and genetic damage has been observed in the offspring of the Z. Maha butterfly. The results of the study were impressive. The study found that the abnormal traits observed in the F1 generation were inherited by the F2 generation and that is highly probably that these characteristics were caused by genetic damage introduce to the parent cells due to the Fukushima accident. At this time, the Z. Maha population is not responding well to the radiation. The population in the Fukushima area is deteriorating physiologically and genetically at a rapid pace. One of the greatest concerns is that the population is not adapting fast enough to the environmental changes.


  • BP oil spill and the long lasting consequences on Marine Life in the Gulf of Mexico
Two yeas after the worst offshore oil spill in US history, the National Oceanic and Atmospheric Administration (NOAA) has issued a report that argues that we are far from declaring the end of the Gulf Cleanup, despite all of the time and money that has been put in to the cleanup those far. The major effect is that on marine organisms. Carcasses of 675 dolphins were recovered in the Gulf Coast region between Feb. 2010 and Feb. 2012. NOAA also used the word "unprecedented" to describe the extent of damage that the coral colonies at the bottom of the ocean have suffered due to the oil spill. Although the surface of the Gulf seems to be returning to normal, it is only an illusion. Beneath the surface lurks a host of very hazardous materials - tar mats, petrochemicals (that are absorbed by marine life), and particles of oil that have settled to the ocean bottom. Many adverse effect continue to be document by scientists, but are invisible to the public.
  • Killifish, a small fish often used for bait that are usually plentiful in marshy areas of the Gulf, are suffering illnesses as a result of the toxic chemicals found in the water
  • Insect like ants and crickets are disappearing from the wetlands due to the petrochemicals found in the soil and the water.
  • At the bottom of the food chain, zooplankton are contaminated still by traces of oil.
As of November 15th, BP has plead guilty to 14 criminal charges in connection with the giant oil spill in the Gulf of Mexico and BP has agreed to pay $4.5 billion in fines and other payments to the government. Much of this money will go to environmental agencies. Unfortunately even if that much money is pumped into the ecosystem, it will still take 10 or 15 years to fully understand the magnitude of damage that was done by the spill, not to mention, it is impossible to reverse all of the damage no matter how much money is paid.
Click for full-size image

To read more about these issues regarding the oil spill, check out:
Two Years After BP Oil Spill, Marine Life in the Gulf of Mexico Still Reels or
BP Will Plead Guilty and Pay Over $4 Billion

Natural Disasters and the Economy
We also looked at how natural disasters can hurt the economy on the Economic Effects page. This page links to an article in Rolling Stone Magazine about how due to increases in temperature and salinity, Australia has been experiencing more extreme weather and natural disasters Despite the fact that natural disasters cause immense damage, countries are still worried about the costs of implementing changes to combat thermal warming. Everyone seems to have the attitude that we should save money and let others worry when extreme effects from thermal warming occur later.


Back to Introduction

Comments

fawcette
Nov 27, 2012

Here's a parody about the BP oil spill: http://www.youtube.com/watch?v=2AAa0gd7ClM ...It might be unsuitable for younger audiences...I'm in the library and can't watch it to review it right now, so I didn't want to put it on the actual wiki.

/groups/evolution3000/search/index.rss?sort=modifiedDate&sortDirection=reverse&tag=adaptationlist/groups/evolution3000/search/?sort=modifiedDate&sortDirection=reverse&tag=adaptationAdaptationCustomTagSidebarCustomTagSidebar?sort=modifiedDate&sortDirection=reverse&tag=adaptation0/groups/evolution3000/sidebar/CustomTagSidebarmodifiedDate5CustomTagSidebarreverseadaptationAdaptationcustom/groups/evolution3000/search/index.rss?tag=hotlist/groups/evolution3000/search/?tag=hotWhat’s HotHotListHot!?tag=hot1/groups/evolution3000/sidebar/HotListdheubel5dheubel52012-11-14 16:36:03+00:002012-11-14 16:36:03updated5dheubel5dheubel52012-11-09 16:46:53+00:002012-11-09 16:46:53updated4Added tag - hotdheubel5dheubel52012-11-09 16:46:49+00:002012-11-09 16:46:49addTag3I thought this might be helpful in reading through everything. Let me know if you guys like it!dheubel5dheubel52012-11-09 16:46:24+00:002012-11-09 16:46:24updated2First createddheubel5dheubel52012-11-09 16:31:49+00:002012-11-09 16:31:49created1wiki2012-11-14T16:36:03+00:00groups/evolution3000/wiki/de98eFalseTable of Contents/groups/evolution3000/wiki/de98e/Table_of_Contents.htmldheubel55 updatesTable of Contents Climate Change Effects of Climate Change in the Environment Oxygen Levels Effects o...Falsedheubel52012-11-14T16:36:03+00:00hot/groups/evolution3000/search/index.rss?sort=modifiedDate&kind=all&sortDirection=reverse&excludePages=wiki/welcomelist/groups/evolution3000/search/?sort=modifiedDate&kind=all&sortDirection=reverse&excludePages=wiki/welcomeRecent ChangesRecentChangesListUpdates?sort=modifiedDate&kind=all&sortDirection=reverse&excludePages=wiki/welcome0/groups/evolution3000/sidebar/RecentChangesListmodifiedDateallRecent ChangesRecentChangesListUpdateswiki/welcomeNo recent changes.reverse5search