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1 Astronomy - Earth. on Fri Sep 10, 2010 9:42 pm

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Autumn warming may lead to greater CO2 release - Science for Environmental Policy - [You must be registered and logged in to see this link.] - An analysis of variations in CO2 fluxes in the Northern Hemisphere shows that warmer autumns are associated with an earlier autumn-to-winter CO2 build-up in the atmosphere. This counters the assumption that warm autumns ought to have a beneficial effect on terrestrial carbon sinks as trees and plants make more biomass through longer growing seasons. The implications of this are that it may be more difficult for northern forests to sequester carbon than previously predicted. - 24 January 2007.
Backing for Severn barrage power - [You must be registered and logged in to see this link.] - BBC News 21 April 2006.
BBC Carbon Cycle - Guide - [You must be registered and logged in to see this link.] - The carbon cycle - Carbon dioxide (CO2) is the main greenhouse gas of concern. A finite amount of carbon is stored in fossil fuels, the sea, living matter and the atmosphere.
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BBC Science/Nature - The Carbon Cycle - Diagram

BBC Climate change - [You must be registered and logged in to see this link.] - news, opinion & explanation from around the BBC.
BBC Climate change: In graphics - [You must be registered and logged in to see this link.] - Climate change: In graphics - It is "very likely" that human activity is the cause for climate change, scientists from over 130 countries have concluded. The graphics below illustrate their predictions on just how much global temperatures may rise over the next century - 2 February 2007.
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BBC - Electricity Calculator

BBC Electricity Calculator - [You must be registered and logged in to see this link.] - The electricity calculator gives you the opportunity to choose how you would like the UK’s electricity to be generated in 2020. - Once you have made your choice, the calculator will work out the possible impact in terms of carbon emissions, whether you managed to keep the lights on and how it will affect people's annual bills.
BBC Fuelling the Future - [You must be registered and logged in to see this link.] - Special Reports.
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BBC Science/Nature - Animated guide Find out how the greenhouse effect works and more...

BBC Guide to climate change - [You must be registered and logged in to see this link.] - Interactive Demonstration.
BBC Guide to UK nuclear power - [You must be registered and logged in to see this link.]
BBC Panaorama - [You must be registered and logged in to see this link.] - Go green or else! - We are told climate change is the biggest threat facing the world but is there anything the average family can do about it? - 5 March 2007.
BBC Planet under pressure - [You must be registered and logged in to see this link.] - With humanity demanding more from the Earth than ever before, BBC News explores the planet's most pressing environmental problems in a six-part series.
BBC - Q&A: Aviation emissions - [You must be registered and logged in to see this link.] - BBC Technology News - Environmental campaigners have been staging protests against the expansion of Heathrow Airport, one of the world's busiest airports. They say any growth in the aviation industry will undermine efforts to tackle climate change. - 20 August 2007.
BBC Radio 4 - [You must be registered and logged in to see this link.] - BBC Radio 4's Analysis: Go Green or Else! will be broadcast on Thursday, 19 July 2007 - The UK government has set a target for reducing carbon emissions by 60% below their 1990 level by 2050. This is a higher target than set by any other country and one which cannot be achieved without serious shifts in the way we deliver and consume energy across heating, lighting, driving, travel etc.
BBC Radio 4 - Analysis - [You must be registered and logged in to see this link.] - Climate Change the Quick Fix?. - 31 July 2008 - Frances Cairncross investigates geo-enginering, the idea that the technology can be developed to cool the world if global warming accelerates. The theory is highly controversial.
BBC Radio 4 - Climate Change - [You must be registered and logged in to see this link.] - Frontiers - Politicians and policy makers around the world seem to have woken up to the fact that global warming is going on, so you might think that the scientists' work is done - 13 June 2007.
BBC Radio 4 - Costing the Earth - [You must be registered and logged in to see this link.] - Bring Me Sunshine - There's often a perception that our grey, overcast skies make solar power a virtual impossibility for all but a few weeks of the year. But two kinds of solar power are possible here - solar thermal to heat water, and photovoltaics (PV) to create electricity. 1 February 2008.
BBC Radio 4 - Costing the Earth - [You must be registered and logged in to see this link.] - Coming soon to a supermarket near you: the carbon label. - In a couple of years time the Government funded Carbon Trust wants to start labelling the food we buy to tell us how much carbon was emitted during its production. They're currently working on a methodology to standardise the information they hope to put on everything from fresh meat to crisps and ready meals, telling the shopper how much energy it's taken to grow, transport, produce, store, consume and dispose of. - January 24 2008.
BBC Radio 4 - Costing the Earth - [You must be registered and logged in to see this link.] - GREENING THE BUILDING?. - What sort of house is difficult to build and difficult to sell? - Well as Tom Heap finds out for this week’s Costing The Earth, it is the house of the future. In eight year's time, the Government has decreed, all new homes will have to be so green that they produce as much energy as they use - and that means using a lot less than most of us do at the moment. - But research by house-builders and academics has found considerable antipathy to the idea of living in energy efficient houses. - May 1st 2008.
BBC Radio 4 - Costing the Earth - [You must be registered and logged in to see this link.] - GRID LOCK? - Britain has been set stretching targets to generate 15% of our energy form renewable sources by 2020, but has the Government put the right policy in place to deliver? - In Europe only Luxembourg and Malta currently have a worse record at increasing the percentage of energy that comes from renewable sources. It's a fact that Catherine Mitchell, Professor of Energy at Exeter University, finds depressing. She tells Costing The Earth that even though Britain has had a renewable energy policy in Britain since 1990, "in that time we have only increased our renewable energy by about 1%.". - January 31 2008 - Renewables delivery under attack - [You must be registered and logged in to see this link.] - By Benjamin Chesterton - Costing The Earth, BBC Radio 4 - The UK government's record on delivering renewable energy is under attack. - Energy regulator, Ofgem, says the main mechanism for delivering green energy to the national grid is not working. - It also told BBC Radio 4's Costing The Earth programme that it believes the government is not listening to its calls for change. - 1 February 2008.
BBC Radio 4 - Costing the Earth - [You must be registered and logged in to see this link.] - SUMMER OF MUD - In the first of the new series of Costing The Earth, guest presenter Tom Robinson packs his tent, waterproofs and wellies and heads out for a summer of mud on the music festival circuit. - With around 5 million people attending festivals this summer, Costing The Earth investigates whether the punters, organisers and musicians consider the environment when they’re enjoying the entertainment. - August 21 2008.
BBC Radio 4 - Frontiers - [You must be registered and logged in to see this link.] - Global Warming - Manmade greenhouse gases affect global warming - a well known fact. But how much does the Sun contribute to this effect? - 21 May 2003.
BBC Radio 4 - Leading Edge - [You must be registered and logged in to see this link.] - Hydrogen biofuels - Geoff Watts examines a revolutionary process announced this week at the American Chemical Society meeting, for converting plant sugars into hydrogen, which could see sugar powered batteries for portable laptops and sugar fuel cells for vehicles within a decade. - 10 April 2008.
BBC Radio 4 - Leading Edge - [You must be registered and logged in to see this link.] - Polar ponderings - Science writer Fred Pierce makes some icy reflections on the warmer, more watery world of the future. - 14 February 2007.
BBC Radio 4 - Leading Edge - [You must be registered and logged in to see this link.] - Wet weather - Dr Peter Stott from the Met Office talks to Geoff Watts about a new study linking increased global rainfall to human activity. Could the UK's wet summer be down to global warming? 26 July 2007.
BBC Radio 4 - Material World - Anthropocene Era - [You must be registered and logged in to see this link.] - How will geologists of the future look back at planet Earth? - Scientists this week have called for us to officially enter a new geological era - called the Anthropocene to reflect manmade changes they say evidence of which can be seen in rocks, sea and ice across the world. - Quentin meets Mark Williams from the Palaeobiology Group, Leicester University and Andrew Gale from the School of Earth & Environmental Sciences, Portsmouth University. - Thursday 31st January 2008. - Universe Today - Are We Living in a New Geologic Epoch? - Have humans changed our planet Earth so much in the past 200 years that we are now living in a new geological age? A group of geologists believes this is the case. They have formally proposed designating a new geologic epoch, the Anthropocene, which would encompass the past 200 years or so of geologic history. The action is appropriate, they say, because during the past 2 centuries, human activity has caused most of the major changes in Earth's topography and climate. - Written by Nancy Atkinson - January 29th, 2008.
BBC Radio 4 - Material World - Designer Soils - [You must be registered and logged in to see this link.] - Could the earth beneath your feet be used to help tackle climate change? - Quentin finds out how soil could be the key to trapping carbon and keeping it firmly below ground. - He's joined by Professor David Manning, School of Civil Engineering & Geosciences, University of Newcastle and Professor Karl Ritz, School of Applied Sciences, Cranfield University. - 24 April 2008.
BBC Radio 4 - Material World - Encyclopedia Of Life - [You must be registered and logged in to see this link.] - As the tercentenary of the Swedish botanist, and father of taxonomy, Carolus Linnaeus approaches, a global consortium has promised to catalogue all 1.2 million known living species on an online Encyclopaedia of Life - 17 May 2007.
BBC Radio 4 - Material World - Global Science - [You must be registered and logged in to see this link.] - Our planet provides food, water and energy for its 6.6 billion inhabitants. - Science helps us maximise the Earth’s resources, but the world's natural mechanisms are coming under unprecedented strain. - In this week's programme, Quentin Cooper talks to four scientists about the role of science in sustaining and preserving our world. - 03 January 2008.
BBC Radio 4 - Material World - Gravity Satellite: GOCE - [You must be registered and logged in to see this link.] - It is over 300 years since Sir Issac Newton discovered the laws of gravity but scientists are still trying to find out precisely how it acts upon all areas of the Earth. A revolutionary new European Space Agency satellite called GOCE - Gravity field and steady-state Ocean Circulation Explorer, is set to find out this September. - Dubbed the 'racing car' of spacecrafts, the arrow-like GOCE is designed to cut through what remains of the Earth's atmosphere and orbit at just 250km about the surface of the planet - and produce a map of the geoid - the gravity field of the Earth. - Quentin is joined by Professor Alan O’Neil, Director of National Centre for Earth Observation, University of Reading and Professor Philip Moore, School of Civil Engineering and Geosciences, University of Newcastle, to find out how GOCE will help us find out more about the Earth's oceans, rocks and climate. - Thursday 21 August 2008.
BBC Radio 4 - Material World - Severn Barrage - [You must be registered and logged in to see this link.] - If it were built, the Severn Barrage would stretch from Cardiff to Western-Super-Mare ... - It would be one of the biggest engineering projects ever in the UK and would be the keystone of a tidal power revolution in Britain. - It could provide 5% of the UK’s electricity needs alone, but there will be significant loss of wildlife habitats. - Can science push the boundaries of tidal power overcoming the problems to make it a viable energy source in the future?. - 15 May 2008.
BBC Radio 4 - Material World - The Secret Seeds of Clouds - [You must be registered and logged in to see this link.] - Rain clouds and bad weather are the scourge of many a British summer. But where do the grey skies come from and is pollution making them worse? - Describing the latest breakthroughs in weather research, Roy Harrison from the University of Birmingham tells Quentin Cooper about witnessing unknown stages of cloud birth for the first time, and how minute particles of pollution can increase cloud cover. - Stephen Dorling from the University of East Anglia takes a wider view and discusses how knowing about air pollution could improve our weather forecasts. But weather can affect pollution too. Could the clouds hold the answer to predicting chemical smog and perfect summer days?. - 31 July 2008.
BBC Radio 4 - Material World - Tracking Traffic - [You must be registered and logged in to see this link.] - Radio 4 Broadcast - Tracking Traffic - In a bank holiday week, traffic can be the main topic of conversation. This week Quentin Cooper investigates how artificial intelligence is being applied to traffic navigation systems for the first time. - The Institute of Industrial Research at Portsmouth University has teamed up with the Traffic Research Laboratory to develop the ‘Congestion Avoidance Dynamic Routing Engine’ (CADRE). - Instead of a regular sat nav system that gets information about the car’s location from a satellite and tells you where you are on a map, the CADRE uses 'fuzzy logic' to imitate how humans think and make decisions, and constantly takes on new information from fellow users to keep up to date with how traffic is moving. - He's joined by Dr Alan Stevens, Chief Research Scientist at the Transport Research Laboratory in Berkshire and Dr David Brown, Head of the Institute of Industrial Research at Portsmouth University who has come up with this new system known as CADRE. - 28 August 2008.
BBC Radio 4 - Our Food, Our Future - [You must be registered and logged in to see this link.] - Tom Heap examines the global food crisis and its impact on Britain. - He asks what role technology can play in solving the problem. Can science provide the answers to food shortages, rising demand, drought and climate change and are scientists looking in the right places for solutions? - Dutch scientists are experimenting with creating meat from pigs' stem cells, while their UK counterparts complain of underfunding. - 18 August 2008.
BBC Radio 4 - The Investigation - [You must be registered and logged in to see this link.] - Simon Cox investigates the dash for renewable energy. Can we generate a third of our electricity from wind power by 2020? - 4 September 2008 - Thursday 4 September 2008 20:00-20:30 (Radio 4 FM).
BBC Science/Technology News - Ancient Antarctic eruption noted - [You must be registered and logged in to see this link.] - Scientists have found what they say is the first evidence of a volcanic eruption under the Antarctic ice sheet. - By Richard Black Environment correspondent, BBC News website - 20 January 2008.
BBC Science/Technology News - An Epoch in the making - [You must be registered and logged in to see this link.] - By Roland Pease - BBC Radio Science Unit - We may be witnessing a transformation of the Earth as profound as the end of the age of the dinosaurs, and entering a geological period as distinctive as the Jurassic - and the reason is that we are causing it. - Writing in the house journal of the Geological Society of America, GSA Today, Britain's leading stratigraphers (experts in marking geological time) say it is already possible to identify a host of geological indicators that will be recognisable millions of years into the future as marking the start of a new epoch - the Anthropocene. - 2 February 2008.
BBC Science/Technology News - From white continent to the blackboard - [You must be registered and logged in to see this link.] - By Martin Redfern BBC Science producer, HMS Endurance off the Antarctic Peninsula. - 7 March 2008.
BBC Science/Technology News - Google Earth turns spotlight on Darfur - [You must be registered and logged in to see this link.] - Laura Smith-Spark - 11 April 2007.
BBC Science/Technology news - In the eye of a storm - VIDEO AND AUDIO NEWS - [You must be registered and logged in to see this link.] - Virtual reality technology is being used by climate researchers to reveal what it is like in the eye of a typhoon. - The BBC's Environment Analyst Roger Harrabin has been trying out the system at the science institute JAMSTEC in Yokohama. - 14 July 2008.
BBC Science/Technology News - Key ocean mission goes into orbit - [You must be registered and logged in to see this link.] - By Jonathan Amos Science reporter, BBC News - A space mission that will be critical to our understanding of climate change has launched from California. - The Jason-2 satellite will become the primary means of measuring the shape of the world's oceans, taking readings with an accuracy of better than 4cm. -Its data will track not only sea level rise but reveal how the great mass of waters are moving around the globe. - This information will be fundamental in helping weather and climate agencies make better forecasts. - 20 June 2008.
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BBC - Changes in ocean height can be a key indicator of climate cycles

BBC Science/Technology News - 'Losing sight of Planet Earth' - [You must be registered and logged in to see this link.] - A key US space agency (Nasa) satellite important for detecting hurricanes and providing other climate data will go silent in the next few years, and missions to replace it have been cancelled or delayed -Molly Bentley - 21 July 2007.
BBC Science/Technology News - 'Space arrow' to map Earth's tug - [You must be registered and logged in to see this link.] - A satellite that can measure tiny variations in the Earth's gravity field will be one of Europe's most challenging space missions to date. - 'Space arrow' to map Earth's tug - By Jonathan Amos - Science reporter, BBC News - 27 July 2007.
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BBC - GRAVITY FIELD AND STEADY-STATE OCEAN CIRCULATION EXPLORER



  1. Goce senses tiny variations in the pull of gravity over Earth
  2. The data is used to construct an idealised surface, or geoid
  3. It traces gravity of equal 'potential'; balls won't roll on its 'slopes'
  4. It is the shape the oceans would take without winds and currents
  5. So, comparing sea level and geoid data reveals ocean behaviour
  6. Gravity changes can betray magma movements under volcanoes
  7. A precise geoid underpins a universal height system for the world
  8. Gravity data can also reveal how much mass is lost by ice sheets
]

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