Monday, July 18, 2011

Global Warming and Increasing CO2 and Methane Emissions

The burning of fossil fuels is the primary culprit behind global warming and worldwide air pollution. Much of the world suffers from the increasing heat. People are getting angry that nothing is being done. They hear about the world and oceans getting warmer. Terrible hurricanes, floods, severe snow storms, floods and droughts have made people more aware of the dangers of global warming.

What is being done to stem the tide of global warming? Some bills have been passed. Obama steadily attempts to accomplish more. It is not clear with the GOP controlled Congress how much will get accomplished during the next two years. But most of what is being done is woefully insufficient. We need one million windmills or erecting 10 or 20 or 50 square miles of solar panels. Those acts alone could supply much of the energy needs of the entire country?

Such large scale programs are necessary to fight the increasing cause of greenhouse gases. Many elements, such as the melting of the permafrost that is releasing incredible amounts of CO2 and Methane into the atmosphere, have not been adequately factored into the statistics of global warming increases. Methane is being produced from the breakdown of organic material on ocean floors and the thawing of the permafrost peat bogs in Greenland, the Arctic and Western Siberia is rapidly accelerating. The permafrost is also starting to melt in Eastern Siberia. Hundreds of new lakes are being formed in the middle of previously solid frozen permafrost. Many of the new lakes are bubbling violently, even in the winter, when they'd normally freeze over. And those bubbles are methane gas. The accelerated melting of the permafrost peat bogs is for now a frightening unknown in the increasing global warming that is radically changing our future.

More important is trying to determine how rapidly weather is changing. The permafrost is melting in Alaska and Greenland at an alarming pace. Cracks are developing in many structures as the solid permafrost becomes soft, like slurry. Back in 2001 at Nairobi, at a major scientific conference on global warming, the dangers of permafrost melting were carefully spelled out. Roads and homes were already cracking then.

Like most governments worldwide the US ignored it. What is in store for the world as this melting intensifies? Some have felt that the melting of the permafrost is the death knell of this world. Methane is being released into the air at such alarming rates it boggles the mind.

The amount of methane that will be released as the peat bogs melts is almost beyond belief. 500 billion tons. And there's another 500 billion tons of carbon dioxide. The latest estimates are higher, some 1500 billion tons of carbon dioxide and methane combined. To get an idea how much that is keep in mind that there's only 1,000 billions tons of carbon dioxide in the atmosphere now. Add to these figures that methane is 21 or 22 times as potent a greenhouse gas as carbon dioxide. Imagining what this will do to global warming?

And unfortunately much of these emissions will enter the atmosphere since the ocean is becoming saturated and rain forests are being cut down. The southern ocean around the Antarctica, once a major carbon sink, has already reached its saturation level. That alone will accelerate the amount of carbon dioxide heading into the atmosphere.

And the worse case scenario that may occur as the greenhouse gases are released and the world gets warmer is acceleration of the release of more methane and carbon dioxide from the thawing permafrost. If global warming is not reversed quickly a runaway irreversible climate change may occur. In other words a vicious cycle may begin that can't be changed by anything that we do. The evidence that the earth is getting warmer is clearly manifested as we see the glaciers disappearing, the oceans getting warmer and the icebergs breaking off and melting. The urgency to control global warming is self-evident.

If you are deeply concerned for the future of our planet, read "Rescue," a novel, that focuses on the increasing dangers to earth as global warming and worldwide pollution sweep the world. It offers solutions to the immense crisis that faces us.

Friday, July 15, 2011

Global Warming and Its Effects On Water

Global warming is expected to increase average global temperatures by several degrees and have detrimental effects on water. According to the Intergovernmental Panel on Climate Change (IPCC, 2007), water will be affected by global warming in several ways.

    * Warming of ambient temperatures will speed evaporation globally. This will cause increased precipitation and changes in the seasonal timing of precipitation and snow/ice melt.
    * Global warming will negatively effect snowpacks, groundwater, lake, and river systems, and water quality.
    * There will be increased human competition for water due to negative effects on water quality and supplies.

Precipitation

As global warming will speed evaporation, precipitation will increase. However, it is hard to judge where increased precipitation will take place and when. Some regions will experience more rain and snow than they have historically, while other regions will experience more drought. The natural rhythm of seasonal precipitation will change, pushing forward seasonal rains and melts in some areas, and prolonging dry spells in other areas. Rivers will flood more frequently and at different times, desert areas may get more flash floods, and coastal wetlands may also sustain greater water levels, which could eliminate this sensitive and important ecology altogether.

Reduced Snowpacks


As global warming increases global temperatures, glaciers and snowpacks will continue to melt at a more rapid pace. Glaciers will continue to break off and disappear. Snowpacks will melt faster and earlier in the season, or not form as densely. The lack of snowpacks in some regions will negatively affect streamflow and water supplies. Declines in snow melt will cause drought in streamflow-dependent regions. Increased glacier melts will raise water levels of some river systems.

Groundwater

Groundwater systems will also be affected by climate change. In some areas, groundwater levels will rise, while in others it will fall. All areas, from deserts to inland plains to coastal areas will have effects on water due to global warming. Groundwater, as the water in rivers, lakes, and streams is affected by streamflow. Where precipitation and streamflow is increased, groundwater will be increased and vice versa. This will cause more flooding and droughts, depending on the region.

Water Quality

Climate Change will cause crises in water quality. More runoff due to heavy rains and floods will carry more harmful chemicals, such as pesticides and fertilizers into water supplies, and increase acid rains. Warmer water temperatures will encourage the flourishing of waterborne diseases. Global warming will also most probably increase the salinity of fresh water as oceanic evaporation accelerates. Soil erosion from heavy rains and floods due to global warming will also have effects on water, dumping more particulate and heavy metals into water supplies. Disappearance of wetlands and bogs will eliminate their beneficial water-filtering role, which will have further negative effects on water quality.
Changing supplies and water quality will increase human competition for plentiful and clean water for use as drinking water and in agriculture.