More DW Blogs DW.COM


Climate Change in the Arctic & around the globe

Search Results for Tag: science

Cool Forecasts – a Hot Topic?

They have no doubt that the planet is warming: Arctic explorers Marc Cornelissen,head of the Climate Change College, and archaeologist Anne Jensen, who rescues historic burial sites from being washed into the sea as a result of coastal erosion. (The sea ice is a natural protection barrier. As it diminishes, the land is left more vulnerable to the elements). I took the photo at Point Barrow, the northernmost point in the USA and well into the Arctic Circle.

People here in Germany are talking about a new study published in the journal Nature last week suggesting a possible lull in man-made global warming. (More in the “eco-news” bulletin which Nina Haase wrote for this week’s Living Planet programme):

This week’s “Eco-News” by Nina Haase

Scientists and politicians are worried that this might make people think they don’t have to rush to take action after all. The study doesn’t dispute the human role in global warming, but it predicts a cooling down from recent average temperatures between now and 2015, as a result of a natural and temporary shift in ocean currents. Now, experts on the Intergovernmental Panel on Climate Change are worried that people might become relaxed again about reducing emissions. There’s no doubt about the fact that people are more likely to take action if they see clear evidence of climate change and are worried about droughts and floods.
(Ines, I thought of you this morning when I read in the paper that Barcelona is relying on tankers bringing in drinking water.)
I was on a panel at an event here in Bonn today where some of the journalists – discussing the role of the media in reporting on climate change – said doubt had been cast on the methods used in the “cooling” report anyway.
In the hope that it might convince some more undecided readers of this blog (I realize of course I could be preaching to the converted with this), I’d suggest a listen to George Divoky, a dedicated ornithologist working on Cooper Island, in the Beaufort Sea north of the Arctic town of Barrow. George has been observing guillemots for 33 years and has quite clearly seen the evidence of climate change. The interview is attached for your listening pleasure. It’s also featured in our Living Planet programme this week.

This shows climate ambassador Cara, talking to a young eskimo,Kayan, who told us he is very concerned about the warming climate and the changes to the sea ice on which the eskimo culture depends so much. Cara is also on this week’s Living Planet programme.

Trying to look at ancient burial sites at Point Barrow. This shows typical everyday working conditions for scientists and other experts trying to keep track of coastal erosion and the ancient sites in danger of disappearin there.


May 14, 2008 | 4:13 pm




Ice-capades and Alaska Baking with Methane?

This will be a picture day to more than make up for the last couple of text-rich entries.Cara has helped me solve the picture problem and the laptop has not been playing up so far.
Hiking across permafrost tundra and frozen lakes, bear tracks, drilling through ice, setting “umbrella traps” (caught any good brollies recently?), digging boots out of deep snow, sometimes with leg still attached…

We’re now in Healy, on the borders of the Denali National Park. We’ve left the freezing temperatures of the Arctic, but are still in snow and ice country.

We spent an incredible day in the (ice)-field with Katey Walter and her assistant Laura, scientists from the University of Alaska in Fairbanks. They’re studying methane emissions from melting permafrost lakes and their contribution to climate change.

Methane is a greenhouse gas 23 times more powerful than co2. Climate change models need to be adjusted to include it. As global temperatures increase, ponds and lakes are formed as the permafrost thaws. There’s been a considerable increase in methane measured seasonally in high northern latitudes, and Katey is looking into the background. How is it formed, to what extent, how much is released under what conditions and what does it all mean for the future climate?
We drove to 8-Mile lake, the dirt track rough but mostly cleared of snow. We were on the lookout for moose and bears, but they kept a low profile.We did find bear tracks on the ice, though.

Transported power drills and other equipment for collecting samples. The idea is to collect plant matter from under the ice and on the tundra to check in the lab, and to collect some methane being emitted from the lake.

One hazard moving around from ice to tundra is losing your boot in snow up to your thighs if you land on a deep soft bit (happened frequently). Sometimes somebody has to dig it out.

The lake is still frozen solid, although the top layer gets mushy or fluid in the sun, so we were wading through water at times. Strange feeling, have to rely on Katey’s word that the ice will hold us all with no problems.
Set up equipment on tarpaulin on ice and have a picnic lunch.

One team of CC ambassadors helped Katey drill into the ice to get plant samples for analysis. The other went with Laura onto the (melting) permafrost to collect samples of dead leaves for analysis (all to find out how fast and under what conditions their decay produces methane).
The students (well they’re not really students, but they do belong to a “College”) worked really hard and without whinging, out on the ice a whole day in strong sunshine. I’m impressed by their knowledge of climate issues, the questions they ask, and how well they soak up the knowledge and can present it. I’ve been interviewing them intermittently (to be heard on Living Planet in the weeks to come).

Laura found a methane “hotspot” in a little “puddle-pond”.

She put an umbrella trap over it, a plastic umbrella/funnel with plastic bottles attached, which collects the gas.

Then she found a second hole which required a boat to access. Art hiked back to base camp, brought and inflated the dingy and they put out a 2nd trap.

Katey and Laura are great, amazingly dedicated and very patient with visiting journalists and “trainee” scientists.

Marc Cornelissen, our expedition leader is a bundle of energy, enthusiasm and he’s completely unflappable. He can magic up lithium batteries which last longer in the cold, fix laptops, cameras, ice-drills, rescue lost equipment stuck in the ice and provide extra socks and even boots after those little “icecapades”.And he just keeps going non-stop.
You can actually light the methane we collected from the lake. Scientists are working on trying to capture it to use it for fuel. Katey says that would be really good for the environment and the climate.


May 5, 2008 | 5:47 pm




A Hardy Species: Arctic Scientists

Now I know what it feels like to be a scientist in the Arctic, out on the sea ice in a biting wind. As German sea-ice researcher Chris Petrich, puts it, “it’s really cool”.
If you’re like him, a northern type, who doesn’t like getting too hot – perfect. From the observer’s point of view – you really need to have a calling to work outside in these conditions. To quote one of the students: “I’d go mental if I had to do this in these temperatures all the time”.

Chris was undoubtedly the hero of the day. He works at Fairbanks Uni and comes up to Barrow at least once a month to monitor the development of the sea ice and the snow covering it. Current climate change models have various problem areas – one of them is the “albedo effect”. Snow reflects heat back up away from the earth. Melting snow leaves darkish puddles, which absorb the heat, thus exacerbating the warming further. But it’s a complex phenomenon to calculate. And there’s a need for more data.
Today, the climate ambassadors were detailed to help Chris with his measurements, drilling holes into the snow (with hand drills, great for keeping warm) and measuring the depth. “Full Arctic gear” was required, “take what you think you need and add an extra layer” was Chris’ advice. I was comfortable with five, almost full-face balaclava and the parka hood. Once my sunglasses had frozen over, I knew why they provided us with snow goggles.

We headed off at one, with Erika, one of the CC students who studied in the US, driving us in the BASC (Barrow Arctic Science Centre) van to the “end of the road“. (They’re a versatile bunch.)The trouble was, it was hard to tell whether the road had ended or not, since it’s all covered in snow anyway. Then we changed into the preferred mode of transport out across the snowy desert that is the frozen Arctic: snow machines, or skidoos, towing long wooden sledges, two on the “doo”, the rest sitting as flat as possible on the sledge. We had 3 armed eskimo “bear guides” with us, keeping watch throughout, as polar bears are common here. Chris has encountered them several times – close encounters fortunately of the brief and “mostly harmless” kind. At the moment, my guide tells me, they’re more likely to be further out, finishing off the carcasses of two recently “harvested” bowhead whales.

Chris was happy to be able to measure on a windy day to compare with yesterday, when the weather was calmer. So at least one person was happy about the wind-chill factor. The measurements took around four hours. The “trainee scientists” worked hard and successfully handed in their measurements. “Spread the word about climate change and the importance of polar research” were Chris’s parting words. That’s our mission Chris, and thanks for an exciting and informative day on the ice.
Great website with animated charts of sea ice – and the daily measurements
And another one on combining Inupiaq and western ice science:Barrow Ice Trails
Simon sent in a question about the insulation of houses, which I’d just like to touch on before I close.
Iglu is an eskimo word for dwelling, not necessarily the ice-house we tend to think of. Traditionally, people built to keep the cold out. I’ve talked to one of our bear guides and he tells me they have thick walls and thick roof insulation – but still need a lot of heat in the winter.


May 2, 2008 | 8:19 am



Comments deactivated

Arctic melting ever faster and nothing in todays papers?

A new study says climate change is having a far greater impact on the Arctic and much faster than previously thought. Like the other journalists and media organisations on the distribution list,this information reached me yesterday from WWF, for publication as of midnight last night.The results of the “Arctic Climate Science Update” are dramatic.
Read the report for yourself via WWF Arctic Programme
But there was no mention of all this on the radio news or in the papers I read this morning. Could it be that melting sea ice, even the melting of the Greenland Ice Sheet and the wide-ranging impacts no longer make the headlines? Are people getting bored with reading about it and starting to take it for granted? Let’s see if it makes the news in the course of today or tomorrow.
I also got these photos from Narsaq in Southern Greenland. The girls are launching a “Messenger Kayak” from an ice floe in the bay. Against the background of a conference on climate change and sustainable development being held in their town, they want to make the voices of young Greenlanders heard, taking on responsibility for the future and asking their leaders to take action on climate change and pollution. Good on you girls.

The picture was taken by Anders Rosenberg, Indra Film.
More info on the Greenland youth initiative

At least I’ve heard quite a few of my neighbours and friends talking about a 2-part film documentary which was shown on German tv last week and this week, which included dramatisations of what climate change is likely to mean for countries like Bangladesh – far away but clearly drastic impact – and places like Cologne in Germany, with huge chemical plants right next to the river Rhine – definitely too close for comfort. I found the film a bit too sensational in style, but I am increasingly coming to the conclusion that we need this sort of tv coverage (evening prime time viewing slot) to get the message across.
What did make the news this morning – John McCain is proposing dropping fuel taxes during the summer holidays. Clearly a very popular proposal. Shame about the climate.
Here are some more pictures from Justin Anderson. They were taken in Denali National Park in January. “Mt. McKinley sunsets”. Emily Schwing adds “it was actually perpetual sunset all day long”. This is Alaska as we’d like to keep it:


April 24, 2008 | 9:01 am