Saturday, May 16, 2015

Brazil Wildfires



Brazil as all countries suffers from wildfires.  The image below shows smoke from the Amazon basin which according to the articles I read gets into the roots and burns for years.  Drought has also cause widespread fires.  According to the article it is up 160% since September.
THE AMAZON RAINFOREST ON FIRE
 


 
Satellite of the forest fires along the Amazon River “(Smoke from wildfires covering almost all of the Amazon on August 20, 2014. For reference, bottom edge of frame is 1,000 miles and the Amazon River flows from middle left until it terminates at upper right into the South Atlantic. Image source: LANCE MODIS.)” (Amazon)
 
“Conditions in Context: 3 Percent of the Amazon Lost To Fire From 1999-2010
The new fires originated in a region now known to harbor ongoing understory fires. These fires burn beneath the interlaced root systems of the Amazon and have been discovered to continue to smolder year-round. During times of intense heat and drought, these fires can break through to the surface and more intensely burn through large swaths of forestland. After burning, they sink back into the understory, waiting for another heat/drought trigger.
 
 
Last year, NASA published a study which found that fully 3 percent of the Amazon had likely been lost to fires during the period of 1999-2010. A primary culprit for these losses was found to be understory fires, which NASA identified as a significant threat to the Amazon forest system” (Amazon)

(3 percent or 33,500 square miles of a 1.2 million square mile area under investigation burned from 1999-2010 according to a 2013 NASA study. Location of fires indicated in orange.) (Amazon)
“Perhaps most significantly, the NASA study implicated climate change as the primary cause for these fires, finding that drought and heatwaves related to increases in human heat trapping gasses had depleted ground moisture levels, resulting in a greatly increased instance of fires.
Post 2010, the satellite record indicates that these fires have continued to grow in intensity. And so the risk to the Amazon expands.
Overall, the Amazon currently stores about 120 gig tons of carbon. It represents about 10% of the global uptake of carbon from the atmosphere through forest tree and plant respiration. But as the Amazon burns and becomes deforested, it shifts from being a carbon absorber to a carbon emitter. Currently, depleted and burning areas of the Amazon are estimated to emit 500 megatons of CO2 each year. And though this has not yet tipped the balance to make the Amazon a net carbon emitter, human climate change and deforestation is driving the world’s largest rainforest rapidly in that direction.
Under human driven climate change and deforestation, the heat and drought situation will only worsen for Brazil. Even without clear cutting, the fires will expand and, eventually, the rainforest will be consumed. Without substantial mitigation action by humans, it is bound to happen. The vast carbon store that is the rainforest will almost certainly begin adding to the already rapacious human heating effect. A process that will continue for decades and will only end once the rainforest is gone entirely” (Amazon)
 
Brazil experiences sharp rise in forest fires. (Photo: AFP)
Published 12 September 2014 (15 hours 46 minutes ago)
New data published by the Brazilian National Institute for Space Research indicates a 160 percent increase in forest fires during September.
According to a new satellite data collected by the National Institute for Space Research (INPE) found that in September there were 15,622 forest fires across Brazil, which marks an increase of over 160 percent compared to the same period in 2013.             
The increase in forest fires is believed to be caused by a combination of slash-and-burn agricultural techniques, declining levels of precipitation and deforestation, which in turn, creates much drier conditions due to exposure to the wind and sun, increasing the risk of wildfires spreading inside the forest.     
Due to the impacts of climate change, change is expected to warm the air in the Amazon region by several degrees and substantially reduce regional precipitation, making understanding the interactions between droughts and fires even more important.
As a result of the findings, the Brazilian Institute of Environment and Renewable Natural Resources (IBAMA) has recommended efforts to install natural firebreaks as well as providing land management courses to local populations.
Despite the sharp increase in forest fires, a 2014 report by the Union Of Concerned Scientists found that 80 percent of the original Amazon forest remains standing, and deforestation rates in Brazil are down 70 percent in 2013 compared with the 1996–2005 average. (www.telesurtv.net)
The data also revealed that Mato Grosso is the state most affected by fires, followed by Para and Maranhao. Together, the three states have accounted for nearly 44 percent of all outbreaks during September.
 
Brazil wildfires threaten homes and national parks  15 August 2010 Last updated at 08:31 BST    Emergency services in Brazil are struggling to control wildfires that have destroyed large areas of national parks and hundreds of homes in the north and east of the country.
    Brazil's National Space Research Institute said there had been a three-fold increase this year in the number of fires threatening rural areas in five states.Paulo Cabral reports from Sao Paulo. (BBC)
 
 
 Work Sited
 Amazon Rainforest Wildfires Scorch Through Drought-Plagued Brazil During Southern Hemisphere Winter, Aug. 20, 2014,  https://robertscribbler.wordpress.com/.../amazon-rainforest-wildfires-scorch...
Links from above site:
 
 
www.telesurtv.net/.../-Brazil-Sees-Increase-in-Forest-Fires--20140913-0002...Sep 12, 2014 - New data published by the Brazilian National Institute for Space Research indicates a 160 percent increase in forest fires during September, http://www.google.com/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=7&ved=0CDMQFjAG&url=http%3A%2F%2Fwww.telesurtv.net%2Fenglish%2Fnews%2F-Brazil-Sees-Increase-in-Forest-Fires--20140913-0002.html&ei=EpZXVZ6hH8WKyAT9q4CgDg&usg=AFQjCNE9xnIA7jdxuirugUSsA66CSKvNew&bvm=bv.93564037,d.aWw
 
 

Saturday, May 9, 2015

Brazil and Climate Change and Sea Levels


Our Professor did not ask us to post our blog this week but I thought what I found very interesting and I like what Brazil is doing to help it's country and our world.  After all, I have found out that the teaching in the 60's that taught that Brazil's Amazon land could feed the world was wrong and now we know that the rainforest is so very important.  It is wonderful to see how this great nation is fighting back to improve it's land and protect it's people.

 

Brazil and Climate Change

Climate change impacts in Brazil

Climate change impacts in Brazil - what the IPCC 4th Assessment Report has found:

    In northeast Brazil semi-arid and arid areas will suffer a decrease of water resources due to climate change [3.4, 3.7]. Semi- arid vegetation is likely to be replaced by arid-land vegetation. In tropical forests, species extinctions are likely [13.4]

    Computed groundwater recharge decreases dramatically by more than 70% in north-eastern Brazil (reference climate normal 1961-1990 and the 2050s) [3.4.2.].

     Increases in rainfall in southeast Brazil have had impacts on land use, crop yields and have increased flood frequency and intensity [TS4.2].

    In the future, sea level rise, weather and climatic variability and extremes modified by global warming are very likely to have impacts on mangroves [13.4.4].

     38-45% of the plants in the Cerrado (Central Brazil savannas) committed to extinction with temperature increase of 1.7°C above pre- industrial levels [Table 4.1].

Amazonia:

     Highly unusual extreme weather events were reported, such as Amazon drought in 2005 [TS4.2].

    Potential increases in drought conditions have been quantitatively projected during the critical growing phase, due to increasing summer temperatures and precipitation declines [4.4.5]

    In non-fragmented Amazon forests, direct effects of CO2 on photosynthesis, as well as faster forest turnover rates, may have caused a substantial increase in density of lianas over the last 2 decades [1.3.5.5].

    Conversion of natural vegetation to agricultural land drives climate change by altering regional albedo and latent heat flux, causing additional summer warming in key regions in Amazon region [4.4.1]

    Major loss of Amazon rainforest with large losses of biodiversity with 2.0-3.0°C above pre-industrial levels [Table 4.1]

    Increases in temperature and decreases in soil water would lead to replacement of tropical forest by savanna in eastern Amazonia. [13.4]

 

            WWF work What WWF is doing on the ground in Brazil to protect against climate change: The indigenous population has their own ecological knowledge based on centuries surviving in natural habitats like rainforests. Often this kind of traditional knowledge includes weather prediction.

     WWF is currently setting up an initial Climate Witness project in Boca do Acre, Amazonas State, Brazil to leverage such ´traditional knowledge´.

     WWF will work with several local communities to help them develop adaptation strategies.

    The lessons learned from this first project will be expanded throughout the region, based on partnerships with community groups, NGOs and local and regional authorities

 

Brazil and Sea Levels

The fifth–largest country in the world, Brazil has a population of more than 200 million (as of 2011).13 The Brazilian coastline is roughly 5,000 miles (8,000 kilometers) long.14 Population density along the Brazilian coast is intensifying, as industrial development continues to grow, people are drawn to urban areas to work, and the tourist industry expands.15

Other areas along the Brazilian coast (from north to south) that are at risk from sea–level rise include:

Belém, Macapá, and São Luís, three capital cities on the northern coast near the Amazon River delta.14 

Atafona, a town just northeast of Rio de Janeiro that has already lost hundreds of homes to beach erosion. 16       

Famous beaches in Rio, such as Copacabana, Impanema, and the Barra da Tijuca, with miles and miles of condominiums and hotels.17 (The Barra da Tijuca will be home of the Olympic Village for the 2016 Summer Olympic Games.18)

The Santos region of São Paulo, which has a high concentration of oil and gas fields, refinery complexes, and chemical and manufacturing plants.14

Some 3.7 million people, 2 live in the Metropolitan Region of Recife, on Brazil's northeast Atlantic coast, and many of them have homes near the coast.3 Scientists estimate that a global sea–level rise of around 2.6 feet (80 centimeters) is likely by 2100—and that as much as 6.6 feet (2 meters) is possible.4 Sea–level rise puts this region and its tourist industry at risk, unless people make well–planned adaptations to higher water levels. Efforts around the world to slow sea–level rise by cutting global warming emissions are also important.             

Recife

Sea level has been rising at an accelerating pace, according to a tidal gauge on the region's coast.5

                            The region's most developed area is built on a coastal plain with an average elevation of only 13 feet (4 meters) above sea level.3 Many homes in poor neighborhoods are almost at sea level, and flooding at high tide is already a problem.6 If a storm surge of 2 feet (61 centimeters) were to arrive when sea level is nearly 3 feet (91 centimeters) higher than today, the extra 5 feet (150 centimeters) of water could ruin homes in these neighborhoods.       

What is Being Done?

                            Storm waves can pluck sand just offshore and deposit it inland. That is the way natural beaches migrate, if no roads or buildings stand in the way. However, the extensive line of high–rise buildings close to the beach leaves no room for natural beach migration from storm waves pounding the coastline near Recife.

The height of high tides in Recife ranges from 5 to 8 feet (1.5 to 2.4 meters). 21 If mean sea level rose another 2 to 6 feet (0.8 to 2 meters), which scientists say is possible, 4 high tides would be that much higher, and neighborhoods could be flooded regularly. Homes along tidal rivers will be the first to be affected. Leaders of Recife have already been considering building new apartments on safer ground, so people could move out of harm's way.16

Sea–level rise puts this region—as well as many others along the coast of Brazil—at risk unless they make well–planned adaptations to higher water levels. The steep cost of these measures could drop if people around the world make significant efforts to curb their heat-trapping emissions. If we reduce the activities that overload the atmosphere with carbon—the root cause of accelerated global sea–level rise—we can slow the pace of change and give coastal communities more time to prepare for the changes ahead

 

Brazil Has Done More to Stop Climate Change than Any Other Country, Study Finds

By Emily Atkin Posted on June 6, 2014 at 3:31 pm

 

Thanks to its effort to reduce tropical deforestation, Brazil has kept 3.2 billion tons of carbon dioxide out of the atmosphere since 2004. That’s more than any other country has done to reduce climate change, according to a new study published Thursday.

“Brazil is known as a leading favorite to win the World Cup, but they also lead the world in mitigating climate change,” the study’s lead author, Earth Innovation Institute director Daniel Nepstad, said in a statement.”

Though climate change is usually traced to the burning of fossil fuels, deforestation in Brazil has also played a huge role in causing it. Brazil’s Amazon rainforest — which once had the highest deforestation rate in the world as of 2005 — absorbs a huge amount of carbon dioxide, effectively preventing the gas from being emitted into the atmosphere.            

When so much of that forest was burned and plowed over, though, a huge amount of carbon was emitted into the atmosphere instead of absorbed, making Brazil one of the world’s biggest greenhouse gas emitters. “Land use” emissions dwarfed those from energy or agriculture.

But now, Brazil seems to be taking steps to reduce their impact. The study, published in the journal Science, showed that Brazil was able to save more than 33,000 square miles of Amazon rainforest since 2004 while still being able increase beef and soy production. Saving those forests amounted to a 70 percent decline in deforestation, putting an enormous brake on greenhouse gas emissions. According to National Geographic, the cuts are more than three times bigger than the effect of taking all the cars in the U.S. off the road for a year.

In Brazil, emissions due to deforestation (green) have taken such a sharp downturn since 2004 that overall emissions have decreased in spite of continued increases from other causes.

A number of policies and campaigns are credited with motivating Brazil to reduce its deforestation, including campaigns by Greenpeace and others to put pressure on companies that buy products that come from Amazon deforestation. Brazil’s forest code was also updated in 2012, requiring landowners to preserve 80 percent of the Amazon’s virgin forest.

“In Brazil, there was rising awareness of the value of nature and how essential it is to our society,” Fabio Rubio Scarano, vice president of Conservation International’s Americas Division, told National Geographic.

Brazil’s contribution to reducing deforestation has also helped fight land-use change-related emissions throughout the world, according to a separate study by the Union of Concerned Scientists, also released Thursday. While the 2007 report from the United Nations’ Intergovernmental Panel on Climate Change showed that roughly 17 percent of all greenhouse gas emissions come from deforestation, the UCS says that number has now decreased to 10 percent — thanks to efforts by Brazil and several other tropical countries.

“What’s surprising about today’s report is the number of countries that are effectively protecting their tropical forests and the wide variety of policies and programs that are working,” the UCS report’s author Doug Boucher said in a statement. “There’s no one right way to stop deforestation, but rather a smorgasbord of options.”

 

Work Cited

Atkin, Emily, Brazil Has Done More To Stop Climate Change Than Any Other Country, Study Finds, published by Climate Progress at, http://thinkprogress.org/climate/2014/06/06/3446097/brazil-cuts-carbon/ , June 6, 2014


WWF Global, wwf.panda.org

Saturday, May 2, 2015

Brazil's coastline erosion and protection

Brazil has a huge eastern coastline along the Atlantic Ocean.  Brazil like other countries work to keep their wonderful coastline.  .The following are articles and videos that I have found on Brazil's coast and their efforts to protect them.
 I wanted to know how long the coast line is and I found the following information on the web.

This a view of the coastline near Rio de Janerio (Hodges)




Please refer to the video itself for location as for some reason I can't get this  blog to let me type below the video.  I have a lot to learn before I finish this class.   Below is some of the sites I looked at.

"The Brazilian Coastline  www.pages.drexel.edu/~weidenrl/u.htm  The  Brazilian Coastline is 4,650 miles long! The coastline has regular contours in the north of Brazil and deep indentations make excellent harbors like Rio de Janeiro, Salvador and Recife."

Coastal Erosion and Management for Safer Coasts in a Changing Climate (CEMSAC), Recife, Brazil, September 9-22, 2013

Hodges, Brian, Coastal Brazil, Abstract; By Journal Of Integrated Coastal Management “Erosão Costeira, Tendência ou Eventos Extremos? O Litoral entre Rio de Janeiro e Cabo Frio, Brasil”


 
 




 


 

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Wo
Erosion in Brazilian
Coastline
 

 

An Overview
 
 
Ministry of the Environment

Secretariat of Climate Change and Environment Quality

Division of Coastal and Air Quality
 
 
J. L. Nicolodi & A. Zamboni


Ministry of the Environment