Warming in Antarctica

Most of the data collection I do here are climate measurements. This gives me a chance to see up close how much the peninsula of Antarctica is warming. The change I can see is dramatic and one of the roles I enjoy is talking to cruise ship passengers about it. I have two links for you today. The first concerns the now imminent breakup of the Wilkens Ice Shelf.




A little more on Wilkens. It is a broad area of fast sea conected to the peninsula. It's pretty young, apparently in place for several hundreds or thousands of years. Unlike the smaller Larsen B Ice Shelf whose breakup was very publicized in 2001-2002, Wilkens isn't holding back flowing glaciers so its collapse won't increase sea level. However, its breakup will mean huge habitat loss to krill and species that on them such as Adelie penguins.

Early on Larsen was identified as susceptible to breakup as temperatures increase. In 1993 Professor David Vaughan of the British Antarctic Survey predicted that the northern part of the floating plate of ice was likely to be lost within the next 30 years if climate warming continued on the peninsula at the same rate. Events on the ground have proceeded much faster than his predictions and last March disintegration began. After several events last summer, the remaining sheet of over 5000 square miles (about the size of Connecticut) is now being held to the peninsula bya bridge only 500m wide at its narrowest. Breakup of that bridge will almost certaibly happen in the next weeks or months.

Meanwhile, evidence for warming of the continent itself is also piling up and that's link 2. Although there is still disagreement, an article in Nature this week gives new evidence that Antarctica is warming in step with the rest of the planet, with rates ranging from +1.1 degrees F / decade on the body of the peninsula (where Palmer is located, and those are the rates we measure) to 0.2 degrees F / decade on the continent proper.













The difficulty in understanding whether Antarctica is warming and how fast is mostly due to the difficulty in installing weather stations in the interior of the continent. Also, Antarctica is a complex story with a huge forces such as the Antarctic Circumpolar Current (ACC), the seasonal antarctic stratospheric vortex and the ozone hole all playing major roles in the climate of the region. Please let me know if you would like to hear more about these topics and I'd be pleased to share what I am learning.

The next 3 weeks: More of a Chick's Life

Entry 1: Eating and Growing
Dec 28th: The chicks are essentially engaged in an eating contest. Before summer dwindles and the sea ice returns they must be big enough and fast enough to fend for themselves. Occasionally, the marathon-paced eating (they are gaining the equivalent of their hatch weight every day) overcomes a chick's ability to stand and it tumbles over, belly first onto its nest.

Even the bird researchers here admit it - at times the chicks appear to have silly grins on their faces.

Although most nests on the interior of the colonies still have two chicks, a few little birds are missing. Most of these have been victim to the South Polar Skua. A pair of Skua is nested close to the penguins on Torgerson and feed their own chicks on return from hunting. A small number of viable-looking and well-protected chicks have also died - apparently as confusingly to the parents as to us watchers.

Entry 2: Muddy and wet !
Jan 7: On this morning I can smell the colony long before I get to it. It's a fact that doesn't come across in television or movies - penguins stink ! Our bird researchers have their own tent to change clothes and shower in for a reason.

I land amid light rain and return to the five nests I am watching most closely. At all of them the chicks are incredibly mobile and active. They flap wet wings and pace on muddy feet. The chicks don't go far though - to do so is to risk ostracism and death. In time, a few more weeks, the chicks and parents will recognize each other by smell. This ability isn't developed yet and chicks who wander from their nest at this stage will be treated as intruders and pecked by any adult they approach.

At one of the five nests I always check out both chicks are missing. Have they gotten lost ? I guess that the one sad and bedraggled kiddo below belonged to the nest once. Its now shunned and pecked by the adults I watch.
























Entry 3: Awkward adolescent
Jan 13th: The chicks are now a month old and some of their babyish ways are beginning to drop away. They still can't defend or feed themselves but are starting to adopt adult postures and vocalizations. The little chick bodies, all bulging stomach and floppy wings are being replaced with a straight spine and cartilage. The oldest ones are just beginning to molt. In adults the yearly molt is supposedly uncomfortable and the birds are irritable while they wait on land for the molt to complete. The chicks however seem oblivious to any itchiness. Maybe they're proud of this next step towards the sea.

On the airwaves

A couple of people have written is to say that they heard me on their local radio station. Yep, that was me. I chatted with hosts at KBCO of Boulder CO on Monday morning, KFOG of San Francisco on this morning and will talk with WCBS of NY on Friday. Each of the conversations has been quick and light, talking about Palmer station and climate of the West Antarctic Peninsula. Thanks to my friend Michael Aisner of Boulder for setting these up ! If anyone has ideas of other locals stations I should talk to, give me a shout.

Ocean Station Obama

While we are back at the station, our USAP research vessel LM Gould is out at sea on the annual Long Term Ecological Research cruise to collect environmental and climatological data. Today they made the news with their innaugural celebration. Let me know if you are interested and I'll talk more about what the LTER project is doing in future posts.



Washington Post

Antarctic Climate Researchers Hold Distant Inaugural Celebration

By Juliet Eilperin

In what may well be the furthest-flung celebration of Barack Obama's
inauguration, scientists aboard the U.S. research vessel Laurence M
Gould held a commemoration 10,000 miles from Washington D.C. off
Antarctica.

The researchers, who are spending three days at sea examining signs of
climate change, decided to call the temporary study area they have
established "Ocean Station Obama."

Doug Martinson, an oceanographer at Columbia University's Lamont-Doherty
Earth Observatory and the cruise's chief scientist, said they named the
station after the 44th president and his incoming administration "to
recognize their vital interest in the problem of climate change."

"The setting of our study, in an area of rapidly changing climate and
ecology, is an appropriate spot and moment in our history to dedicate
this sampling station to the events taking place in Washington,"
Martinson said in a statement. "In doing so, we hope to bring ocean
sciences and climate change research to the public's attention."

The three-day cruise is a part of a seven-week oceanographic expedition
known as the Palmer, Antarctica Long-Term Ecological Research Project
(PAL-LTER), which has surveyed a section of the western Antarctic
Peninsula each year since 1993.

The peninsula has warmed nearly 11 degrees Fahrenheit since 1950,
leaving the area with 90 fewer days of sea ice cover compared to 1978.
The warming has particularly hurt an Adelie penguin colony near Palmer
Station, which has declined by 80 percent since 1975.

Arctocephalus gazella to you, Water Dog to me

On Monday I was landing on nearby Jacob's Island when I heard a bit of a bark behind me. Knowing that only the smallest seals in the area, the Antarctic Fur Seals, bark, I was excited. Both common sense and the Antarctic Conservation Act prevents humans from getting too close to animals down here so I moved off a bit and landed further down the cove. After getting settled on land, I approached the young male from about 50 feet away and he sat for this nice photo shoot.





























Fur seals like my friend here are distinguished by true seals by the presence of external ears and their ability to bring their rear flippers underneath their bodies to walk on all four limbs. They are most closely related to sea lions and are not-too-distant relatives to otters, bears, raccoons and dogs.

The trade in fur seal pelts was responsible for much of the exploration of the Southern Ocean and sub-Antarctic islands. Within 4 years of their discovery on the South Shetland Islands in 1819, the population there was decimated and by 1900 the species was feared to be extinct. Only one small colony is known to have survived, on Bird Island near South Georgia. Today there are at least 4 million Antarctic Fur Seals, 95% of whom live on South Georgia Island. They are pretty rare around Palmer but increasing as the area becomes ice-free. The males weigh about 450 lbs and live about 25 years, the females weigh about 150 lbs and live 35 years or more.

Just by noticing my presence, this fellow gets counted as pretty nervous by local standards. The e-seals generally won't lift their heads until you practically trip over them. However, after watching me for a few minutes, he settled back down and was still there, scratching his back against his rock, when we left a few hours later.

Game Time

I was asked, "what sports are popular at Palmer station ?". Well, now that the snow has cleared from the backyard, Frisbee golf is played by a few people. But far and away, the sport of choice is Kubb (pronounced "Koob"). Not familiar with it ? No surprise. The equipment required is really simple although the rules can be a little complex.

In essence, team members take turns throwing sticks at larger sticks. That might sound like its on the edge of safety already. An additional and important part of the game however is the energetic taunting and dancing mean to distract the opposing team at each throw. Depending of whose playing and how wound-up they are, it can get quite rowdy :)

Lore suggests that Koobs originated with the Vikings and that our lab manager learned it from some Norwegian deckhands on a passing ship.

I'll get some action video of it up sometime.

To start playing Kubb yourself, polish up your Swedish and blink ute this website: http://www.vmkubb.com/index.asp.

T plus 4 months

This is going to be a different sort of blog entry today - no pictures or long-winded descriptions of wildlife. Just me, being introspective.

For years I said I wanted to work in Antarctica. Sometimes at dinners with friends, and always on New Years Resolutions lists, the word "Antarctica". I didn't have any clear motivations for the desire apart from the "wow" factor of being someplace few people go. A couple of years passed. Then, last summer, the realization that I was getting too old, too quickly. Couldn't put it off. I found myself a position at a station I had never heard of, in a part of Antarctica I didn't know existed and couldn't find on a map. Finagled a leave of absence, found friends to housesit. Left my dog, my big city, my blackberry for 7 months without an exit strategy, working a job I didn't know and living in conditions I had no clear idea of. Excited yes ? Certain of anything else ? No.

7 months - long enough to count but not an eternity. Now I'm past the midway mark and in the downhill slide towards home. I left California September 9th and will leave "the ice" about April 9th.

I was inspired to do this post because of comments left by Janice and Jeannie. Janice is a 5-time astronaut and encouraged me to talk about my life here. She says people back home are interested in the smallest things. Jeannie wondered how my cold-prone hands were holding up.

So, here goes: my thoughts on 4 months of life outside the US, in a place with 23 other people.

1. Head, Shoulders, Knees and Toes
The first thing I noticed down here was that my eyes and brain have begun talking to each other differently. Even on drab days, I see aquas and blues as vivid, almost pulsingly alive. Anything that sticks through the snow seemed blindingly colorful but never comes out that way in photographs. Also, my body is eager to adjust to the smallest trend in the weather and set its thermostat according to that condition. Two or three days of wind and rain become comfortable but even a degree drop in the temperature becomes cold and I shiver all day. I've had one experience of hypothermia, which is enough. Usually those little chemical handwarmers and lots of layers of clothes do their job.

2. Community life - A close knit family ?
Some towns are probably as small as our community and many families are as big. Psychologically we are somewhat in the middle. Maybe like teams of mars astronauts will be in the future. Everyone has their job and roles are doggedly stuck to. There is no privacy - we know who wakes up early and how early, who's good at their job and who isn't, who steals cookie dough out of the freezer. We could catalog each other clothes. We rarely talk about the things we know. And there are vast gaps in the rest of our conversation - personal life off the ice for instance is mostly taboo. What we are left with is the assurance that every person is fulfilling their role and would save our life if required. And, the daily New York Times crossword. That's exciting.

3. The habits of society
The majority of people on the station, 18 of the 24, are career Antarcticans. They have been doing this seasonal work for years and live itinerantly when they are off the ice. Not a lot of people here are big consumers. Will I change when I get back ? Hard to predict. Living almost without money is comfortable here, I don't know if it will stick.

So, has it been what I expected ? I'm not sure. I think I was prepared for the experience to be anything. It has been, and is, complex. I miss my niece and nephew, I miss the freedom to go for a long walk somewhere warm or greet a stranger. But, I am wowwed to be living in a time when a member of my species is allowed to hang out in this landscape and be (even a somewhat unnatural) part of the greater system. I know I will miss this place very much in 3 more months when it is time to go.