![]() |
|
| THE HANDSTAND | APRIL 2007 |
![]() AFRICA :BBC bLog and others on Global Warming Debates I am an archaeologist whom works in Niger and has studied climate change and how it affects people in the desert for the last 10,000 years. I just wanted to make some comments . OK Climate change.... no where in the article did you specifically state where the climate has changed or showed a graph of how temperatures have changed, if you did you would find that its been pretty constant for the last 3500 years...ARID AND HOT. I am not disputing the fact that lake Chad is disappearing at an alarming rate due in part to natural climatic effects, however I feel it is necessary for the article to highlight more of the direct reasons for lake Chad's depletion...local human involvement and lack of government cohesion. Nigeria, Chad, Niger, and Cameroon have all been exploiting the water source by unsustainable means, and cutting off the waters supply. It is naturally running low due to the Climate yes, but its exponentially effected by the people and governments whom can't work together to save it. That's all I have to say really, thanks for your time. Sincerely, Jeff Stivers Jeff Stivers, seattle, WASHINGTON I lived in Chad for several years. This article makes them sound like noble stewards of the land. This is not true. Lake Chad is drying up (and has been since I lived there almost 20 years ago) because the water is being diverted to irrigate crops in the arid desert, as well as feed the growing cities in Nigeria, Cameroon, Chad and Libya. This has everything to do with them using too much water in the middle of the Sahel .Bob, Bicester, UK ![]() ZIMBABWE Climate change in its self is not a problem, for Zimbabwe, it has always occurred and people have adapted. What is worrisome is the pace and magnitude at which climate change is now taking place, which is preventing adaptation to the changing environment. for example if one cuts an indigenous tree like a Mopane tree, replacing that tree by planting a similar tree now almost impossible under natural conditions due to changes in climate. It is unlikely that Zimbabwe, poor as we are can afford the technology that is needed to mitigate the impacts of climate change. david chikodzi, victoria falls, zimbabwe KENYA Oh yes, I have seen it all with my own eyes, the rainfall is less, and all the rivers I swam in when young are all gone. The lake that I used to see and admire after every sunrise, Lake Ol Bollosat, near Nyahururu (in Kenya), has shrank. In my village, no more virgin land remains while farmers hungry for land have cleared land up to the river bed. As all this happens the population continue too rise as policies makers turn their attentions to grandiose projects like constitution which will not succeed if the mouths are hungry and people are hopeless. It is time Africa stopped living for today. X N Iraki, Frankfort, Kentucky, USA Yes, the climate has changed dramatically, causing the seasons to shift. For example, here in Kenya we expect high rainfall during April, and October low rainfall. It's vice-versa now following the floods which hit most the area in the country. Some of rivers have reduced their water volume - although this may be due to introduction of poor Re-forestation, substituting the indigenous trees with some like blue gum trees. Those trees are important in reclamation of waterlogged land, for their high intake of moisture from the soil. Joseph Gichimu Wachiuri, Nairobi Kenya It's even worse in central Kenya where temperatures keep on rising to intolerable levels. Rivers like chania & kariminu are on the verge extinction. Our leaders should legislate on these instead of telling us of stupid wars in Iraq & Afganistan. We drink water not blood john kariuki, nairobi,kenya UGANDA Yes, climate is affecting us very much even our own lake victoria is shrinking at rocket speeds. Samuel Irungu, Uganda NIGERIA It is true that the Sahara is moving quickly into the northern part of Nigeria. The land looks more arid and it is getting hotter every year. Most people are unaware of how their actions can have an impact on the environment. I would suggest that the NGO's and Governments should liaise with religious leaders to educate people in the churches, mosques and madarasas. I am sure there will be an impact if more trees where planted and people where aware of their actions. Zi, Katsina, Nigeria Growing up in the 70s, I remember that the harmattan season used to be cold. Not any more. The only thing you notice today is the stinging heat. The rains don't fall as they used to. We once had the "7 days rain" when rain will fall continually for 7 days. Now that too is gone. All we have is the clinging heat. Even the air is still. Robert Lazobra, Lagos, Nigeria
March 9th, 2007 at 2:38 am I didnt see the program (it wasnt in my area). But Im very familiar with the science of global warming, and the claims that its due to solar activity. Based on your description Id say the science in the program was a crock. For example, sunspot counts did not decrease from 1940 to 1970 they increased up to around 1960 then decreased to 1970. Estimates of total solar irradiance (TSI) based on sunspot counts and isotope abundances, and direct measurements of TSI by satellites (since 1978), indicate that solar activity really hasnt budged since about 1950. Also, the global cooling from about 1945 to 1975 was very tiny, about 0.06 deg.C. Furthermore, we know the cause; its due to the increase in atmospheric sulfate aerosols (which have a cooling effect) due to industrial activity during and after WW2. This counteracted the warming effect of greenhouse gases, which werent nearly as plentiful back then as they are today. But in the 1970s sulfate aerosol emissions were limited (mostly by law, as theyre responsible for acid rain), while greenhouse gases have continued to accumulate in the atmosphere. Thats why since about 1975 the modern global warming era greenhouse gases have become the dominant factor. Compare the nearly 0.6 deg.C warming since 1975 to the 0.06 deg.C cooling during the period 1945-1975. The notion that global temperature has to follow CO2 concentration faithfully throughout history, is rooted in the naive idea that CO2 is the only factor influencing climate. Ironically, denialists often accuse climate scientists of this, by claiming they ignore the effect of the sun. In reality, modern climate science considers all known factors, while denialists tend to latch on to only one (like the sun) and make it explain everything. The suggestion that over 99% of climate scientists are participating in a hoax to get research funds would be laughable, if the consequences of global warming werent so serious. Who do you really think is more likely to be lying for the money: the vast majority of the climate science community, or ExxonMobil? In short, the real great global warming swindle is the program you watched tonight. prunejuice
Says: I watched the global warming swindle too and if I hadnt got a bit of science knowledge, would have found the evidence compelling. The science was poor and presented in a totally biased sensationalist way. Maybe sun spots do have an influence. But so too might CO2, methane, aerosols, water vapour etc. While we dont know for certain, whats wrong with the precautionary principle and reducing, as Pete says, human activity to restrict CO2 outputs? After all, we need to find viable and safe alternatives for fossil fuels anyway, so we can address more than one problem at the same time. March 12th, 2007 at 7:52 pm Would you agree that the measurement of solar activity, solar forcing and planetary wobble is in its infancy? That we have only been able to take advantage of satellite information over the last two decades and that much work needs to be done to understand the real significance of solar activity on climate change? The importance of this field is only just being recognised. te
Smith Says: Monbiot does it again. I love the punchline No
one in [Channel 4s] science unit appears to
understand the difference between a peer-reviewed
scientific paper and a clipping from the Daily Mail
Wars of the world: how global warming puts 60 nations at riskAs scientists deliver a detailed report on the impact of climate change this week, an 'IoS' investigation shows it will spark a major rise in conflictsBy Geoffrey Lean, Environment Editor ,Sunday IndependentPublished: 01 April 2007Scores of countries face war for scarce land, food and water as global warming increases. This is the conclusion of the most devastating report yet on the effects of climate change that scientists and governments prepare to issue this week. More than 60 nations, mainly in the Third World, will have existing tensions hugely exacerbated by the struggle for ever-scarcer resources. Others now at peace - including China, the United States and even parts of Europe - are expected to be plunged into conflict. Even those not directly affected will be threatened by a flood of hundreds of millions of "environmental refugees". The threat is worrying world leaders. The new UN Secretary General, Ban Ki-moon, told a global warming conference last month: "In coming decades, changes in the environment - and the resulting upheavals, from droughts to inundated coastal areas - are likely to become a major driver of war and conflict." Margaret Beckett, the Foreign Secretary, has repeatedly called global warming "a security issue" and a Pentagon report concluded that abrupt climate change could lead to "skirmishes, battles and even war due to resource constraints". The fears will be increased by the second report this year by the Intergovernmental Panel on Climate Change. The result of six years' work by 2,500 of the world's top scientists, it will be published on Good Friday. The first report, released two months ago, concluded that global warming was now "unequivocal" and it was 90 per cent certain that human activities are to blame. The new one will be the first to show for certain that its effects are already becoming evident around the world. Tomorrow, representatives of the world's governments will meet in Brussels to start four days of negotiation on the ultimate text of the report, which they are likely to tone down somewhat. But the final confidential draft presented to them by the scientists makes it clear that the consequences of global warming are appearing far sooner and faster than expected. "Changes in climate are now affecting biological and physical systems on every continent," it says. In 20 years, tens of millions more Latin Americans and hundreds of millions more Africans will be short of water, and by 2050 one billion Asians could face water shortages. The glaciers of the Himalayas, which feed the great rivers of the continent, are likely to melt away almost completely by 2035, threatening the lives of 700 million people. Though harvests will initially increase in temperate countries - as the extra warmth lengthens growing seasons - they could fall by 30 per cent in India, confronting 130 million people with starvation, by the 2050s. By 2080, 100 million people could be flooded out of their homes every year as the sea rises to cover their land, turning them into environmental refugees. And up to a third of the world's wild species could be "at high risk of irreversible extinction" from even relatively moderate warming. International Alert, "an independent peace-building organisation", has complied a list of 61 countries that are already unstable or have recently suffered armed conflict where existing tensions will be exacerbated by shortages of food and water and by the disease, storm flooding and sea-level rise that will accompany global warming, or by the deforestation that helps to cause it. The list forms the basis of the map on the opposite page. Four years ago the Pentagon report concluded: "As famine, disease and weather-related disasters strike... many countries' needs will exceed their carrying capacity. This will create a sense of desperation, which is likely to lead to offensive aggression." Many experts believe this has begun. Last year John Reid, the Home Secretary, blamed global warming for helping to cause the genocide in Darfur. Water supplies are seen as a key cause of the Arab-Israeli conflicts. The Golan Heights are important because they control key springs and rivers and the Sea of Galilee, while vital aquifers lie under the West Bank. John Ashton, the Government's climate change envoy, says that global warming should be addressed "not as a long-term threat to our environment, but as an immediate threat to our security and prosperity". |
|