Search Results for Tag: Sea level
Found any rubber ducks recently?
If you happen to be fishing or hunting in the Baffin Bay area (relatively unlikely in itself) and you come across a rubber duck (!) – don’t just mutter to yourself about pollution reaching remote areas. You could help some of the world’s leading scientists find out more about melting glaciers and climate change.
Rubber ducks aren’t something you’d usually associate with NASA, but then again, you always have to expect the unexpected here.
The grand total of 90 ducks were put into the ice of a Greenland glacier in August by a NASA scientist Alberto Behar, to help find out why glaciers head towards the sea faster in summer. He also used a sophisticated probe,with measuring equipment and a gps transmitter. But it’s hardly surprising that it’s the ducks that make the headlines.
Unfortunately, none of them have been reported so far.
You can read the whole story from Reuters here
Scientists know quite a lot about this particular glacier, the Jakobshavn glacier, because it accounts for a fair percentage of the ice that comes off Greenland. But even the experts don’t know everything, for instance how exactly the water flows off and how this influences the movement of the glaciers and their speed.
I’m using the theme of “the lengths scientists have to go…” as an excuse to put up this picture from Svalbard.
It shows Bob and Sebastian – two scientists I interviewed there – rushing to salvage “the drone” – a camera + gps on a mini hang-glider, being used to photograph snow melt and water flow.
We’ve been hearing a lot about the Arctic sea ice melting recently, but of course the thing about Greenland is that it has so much land-based ice. So when it melts – unlike the sea ice – it increases the sea level.
Scientists from the eastern German Technical University of Dresden have just published a study confirming that the Baltic Sea leavel is rising faster than expected on account of global warming. It seems it has risen 15 cm in the last hundred years. A more worrying result is that over the past 20 years, the annual level rise has doubled, to 3 mm every 12 months – in accordance with the global trend. The scientists attribute this to melting glaciers and thermal expansion of the water.
Article on Dresden Uni webpage (German only, as far as I can see)
Readers might also be interested in the RealClimate blog, which is written by climate scientists. There is currently a debate going on there about sea level rise.
Real Climate Science Blog
DateSeptember 22, 2008 | 9:43 am
Lions, Giraffes and Hippos on Ice ?
So what are these African animals (I took the pictures in Tanzania) doing on the Ice Blog? Of course it’s all about biodiversity.
The Arctic is particularly sensitive to climate change and acts as a kind of early warning system. At the same time, ice melting up there will have consequences for the whole planet. I’ve gone on a lot about how melting sea ice affects the flora and fauna in Arctic regions. There’s also been a mention of how melting glaciers change the temperature, salinity and light conditions of the ocean. I’m currently working on a radio feature on my trip out onto the sea ice up in the Arctic with the “ambassadors” from the Climate Change College and scientist Chris Petrich. (Listen out for that in Living Planet). One of the main subjects of his research is the “albedo effect”. That is all about how the whiteness of ice and snow reflects solar radiation back up off the earth’s surface. When the snow cover decreases, the “melt ponds” are a much darker cover, and that absorbs warmth – exacerbating the overall warming effect. So, polar areas have a huge importance for the planet as a whole. Then there is the methane (around 23 times more powerful than c02 as a climate gas) being released from the huge areas of melting permafrost.
All this effects not only the area where it happens, but the whole planet. And of course, the sea level is rising, which will have disastrous effects for all the low-lying areas of the globe.
All our species of plants and animals are dependent on particular habitats and living conditions – from polar bears to giraffes, hippos, kangaroos or cuckoos. (Listen to Alison Hawkes on the plight of the “bird of the year” in the Black Forest. Will cuckoos exist soon only in those quaint – or exasperating – clocks?)
The Cuckoo Story
Last night the IUCN and UNEP staged an event here in Bonn to mark Biodiversity Day.
More about the IUCN
During it, I met Pavan Sukhdev,who’s heading the TEEB project,that is a study on The Economics of Ecosystems and Biodiversity. I felt very privileged to have the chance to talk to the man who’s in charge of what some people say could do for biodiversity what Nicholas Stern’s report did for climate change. The idea is to put a price on nature and make it clear, in economic terms, what it is worth to protect our biodiversity. The first part of the report will be presented in Bonn next week, but he did give me an idea of the scale of things. You can read the interview here:
Pavan Sukhdev on putting a price on nature
DateMay 23, 2008 | 8:43 am
TagsAfrica, Arctic, Biodiversity, Climate, Climate Change College, CO2, economics, feedback loops, IUCN, Living Planet, methane, permafrost, sea ice, Sea level, TEEB, UNEP, wildlife