melting sea ice

Polar Bear Diet Changes as Sea Ice Melts

“There is little doubt that polar bears are very susceptible as global climate change continues to drastically alter the landscape of the northern polar regions,” said Robert Rockwell, a research associate in the Museum’s Department of Ornithology. “But we’re finding that they might be more resilient than is commonly thought.”

Polar bears are listed as a threatened species under the United States Endangered Species Act and are classified as “vulnerable” with declining populations on the International Union for Conservation of Nature and Natural Resources’ Red List. Climate warming is reducing the availability of their ice habitat, especially in the spring when polar bears gain most of their annual fat reserves by consuming seal pups before coming ashore for the summer. The new work, led by Rockwell and Linda Gormezano, a postdoctoral researcher in the Museum’s Division of Vertebrate Zoology, examines how polar bears might compensate for energy deficits from decreasing seal-hunting opportunities.

Read more about this research on the blog.

ARCTIC SHIPPING LANES:  Impacts of climate change

As noted recently in The New York Times (3 May 2017), the melting of sea ice in the Arctic, due to climate change, will open up new shipping routes connecting Europe and North America with Asia. The Arctic is potentially a faster, more direct route between Asia and ports in Europe and eastern North America.

The amount of sea ice covering the Arctic Ocean has declined sharply each decade since the 1980s, according to measurements taken each September when the ice is at its minimum. Older, thicker ice is disappearing as well. Scientists say global warming is largely responsible for the changes. 

The changing conditions offer an opening to shipping companies. However, variations in ice conditions and costs could continue to discourage shipping companies from using these routes. While the loss of sea ice is distressing, it is important to recognize potential economic incentives in contemplating mitigation measures.

Source:  J.K. Patel and H. Fountain, “As Arctic Ice Vanishes, New Shipping Routes” (New York Times, 3 May 2017)

Snowdrift (fRyder x Reyes)

@atrilial @for-the-grey-wardens

No angst!? Uh oh. 


Reyes had never been to Voeld before, and he didn’t think he’d ever been this cold. There was cryo, of course, but he hadn’t really felt that. There was also that one terrifying suit breach back in training, and that was an experience he never wanted to repeat - but it wasn’t really comparable. The cold up here wasn’t sharp or fleeting. It was dense. It was pervasive. It made his limbs feel heavy, like there were icicles hanging from his sleeves. Still, it was a pleasant kind of cold. It made his heart beat faster to make up the difference. He had a helmet on, but his lips still felt a little numb.

Sara was barely visible through the haze of whirling snow, but she was somewhere above him. If he squinted up the mountainside, he could see her clinging to the slope. Slope was putting it mildly, though. It looked like they were climbing up the side of a fucking world.

How had she talked him into this?

She twisted around to wave at him - and Reyes’ heart lurched up into his mouth when she wobbled on her perch. She caught herself, though, and Reyes could hear her laughing through the comm in his helmet.

“You’re crazy!”

Sara gave an exaggerated shrug - and removed both hands from the rock she’d been clutching. Reyes was sure his heart was going to give out right here. Maybe he’d fall off the mountainside and finally find out what was so great about a jump jet.

“No hands,” Sara said cheerily. She waved them both in the air - and if Reyes could have seen her face through her helmet, he’d have definitely found her grinning. “You doing okay down there?”

“Just fine,” he grumbled. He was trying not to look down. He stretched for his next handhold, carefully checking its stability before he hauled himself up higher. This wasn’t rock-climbing, precisely, but it was close enough. Reyes didn’t want to find out how this would go without something to hold onto. “What about you? Want me to take a turn carrying those things?”

“Nah.” Sara turned back around and gave her hips a wriggle, shaking the two bundles of hardened polymer slats that were strapped across her shoulders. “I’m good. Scott and I used to take turns carrying them, and Dad’s weighed a ton.”

“Yours was an awfully athletic family, wasn’t it?”

Sara chuckled - or maybe she just exhaled loudly. Reyes hadn’t yet sorted through which parts of Sara’s family life were still sore to the touch. This seemed to be one of those memories she hadn’t made up her own mind about, either. She turned her back and reached for another rock.

“We’re nearly there,” she breathed into the comm. “We’ll rest at the top.”

“You can’t mean the top.” Reyes was aghast. “That is a very tall peak, Sara. I can’t even see it from down here.”

She did laugh, this time; full-throated and gleeful. “Not the top top. See that slope?” She pointed with her left hand, and Reyes followed the line of her arm to an outcropping about twenty metres higher up. It was a steep approach from where they were, but it gave way to a smooth slope on its western side. “We’ll go from there.”

Reyes barely made it. He’d always thought he was in pretty good shape, but the Pathfinder’s lifestyle was turning out to be more than he was ready for. Sara had made this little trip to Voeld sound much more romantic and much less exhausting than it had been so far, and Reyes’ legs were wobbling when he finally clambered up onto the ledge she’d pointed out. She grabbed his forearm to help him up the final few steps, tumbling back onto her haunches when he was finally kneeling beside her.

Sara tugged off her helmet and plonked it onto the ground. Her hair spilled across the rock, picking up snowflakes as it went. Her cheeks were red. She was grinning, but she was breathing hard - and that helped with Reyes’ embarrassment when he lay down flat on his face. He pulled his helmet off and lobbed it into the snowdrift behind them.

Shit.”

Sara laughed, the pitch climbing steadily. Her voice turned breathy as she tugged on Reyes’ arm. “Look,” she urged him. “Look.”

Reyes grumbled as he picked himself up - but in the end, he was glad he obeyed.

The snowfields spread out below them like a sea of melted stars. Ice, snow, rock, sky; they were everywhere and nowhere, wrapped in an orb of pale blue and white. The sun blazed high above them, brilliant but somehow cold, its pale light bathing everything in a piercing, peaceful glow. Reyes felt his mouth fall open. He forgot the cold. He forgot the wind. He forgot the ache in his muscles and the sweat on his skin.

“Wow.”

Sara beamed at him, her hand snaking down his arm. Their gloves made it difficult, but she twined her fingers through his. “Your mouth is open.”

“I know.”

She turned his face to hers and kissed him, teasing his lower lip between her teeth. Reyes could taste ice water on her lips. “Thank you for coming with me. I haven’t done this since I was a teenager.”

With that, she slid her burdens off her shoulder. The heavy slats clacked loudly as she emptied them onto the rock and set about clicking the pieces together. Reyes watched uncertainly as the first sled slowly took form. The view was beautiful, but his awe was quickly fading. Heights were fine. Speed was fine. Descending a height at speed, though, without a good pair of wings beneath you - that was insanity.

“I know you said this wasn’t dangerous -”

“It’s not.”

“- but I wouldn’t blame you if you wanted to back out.”

Sara chuckled, and she snapped the next pair of slats together with glee. “Having second thoughts? There’s no way you can be scared of heights.”

“I’m not.”

“Falling, then?” Her words were punctuated with snaps; clacks; scrapes. “Seems like a difficult fear for a pilot to have.”

“That’s not it.” Reyes would never have admitted it, but he wasn’t just uncomfortable. He really was starting to feel scared.

Sara clicked the last component into place, surveying her work critically. The two sleds were plain, but apparently serviceable, because she gave a satisfied nod. She tucked her hair under her collar and pulled her helmet back on, then retrieved Reyes’ from the snowdrift. She handed it back to him, smiling through her visor - but something in his eyes must have given him away. Her smile turned soft and careful.

“We don’t have to do this,” she said gently. “I was glad just to walk up here. It’s beautiful.”

Reyes shook his head. He knew a white lie when he heard one, so he prised his helmet from her hands. He slid it back on, grateful for the little hiss that sounded when the latches resealed - because he suddenly needed a very deep breath.

“We’re up here, aren’t we? Let’s do this.”

Sara’s next smile was a thousand watts. Her movements quick and careful, like a child sharing her favourite game, she positioned her sled at the lip of the hill. She sat down atop it with her feet braced against the forward corners, taking pains to ensure she faced the gentler side of the incline. Craning over, she patted the snow beside her.

Reyes’ heartbeat was rattling his skeleton. He was definitely numb, now, but he could feel a throbbing between his shoulder blades. It was probably just his heart - and it was probably trying to flee.

He dragged his sled over and sat down just like she had. He copied her stance, but he couldn’t still his shaking hands.

Sara clapped him on the shoulder. “Just stay with me.”

Then she was over the edge - and she was gone, streaking away across the snow like a probe through a glittering nebula. For the length of half a heartbeat, Reyes remained frozen.

Fuck it.

He pushed his sled forward, and the decision was suddenly out of his hands. Gravity took over, and he was flying - not really flying, of course; not in the sense that Reyes always had - but the world was eroded in a blur of ice and snow. His heart ceased battering against his spine. It clung to it instead, hanging on for dear life - and Reyes hung on too. He could hear Sara whooping through the comm. He could hear his blood rushing in his ears -

But there was no sudden disaster; no abrupt but expected end. His adrenaline ran its course. Gravity ran its course, too, and the world slowly resumed its shape as Reyes began to slow. He could see Sara waving at him from the bottom of the hill, helmet once again discarded. She was laughing; yelling; cheering - and by the time Reyes slid to a halt beside her, he was laughing too.

“That was great!” she hollered. She was beaming at him, her cheeks even more flushed than before.

Reyes ripped off his helmet and flung himself into the snow beside her. “Shit.”

Sara laughed, clambering over him to lie down at his side. A snowflake landed on his nose, but Sara kissed it away. “Again?”

“Again.”

Timmiaruq

Ocean-going creatures, related to both Sirens and Arctic Harpies, Timmiaruq are found largely in the Arctic, though in recent years, with the melting sea ice, they have been found landing farther and farther south, which can prove a risk, given their abilities - while Timmiaruq are capable of eating normal food (usually seal cubs or fish which they hunt) they can, if pressed, drain magical energy from others. While this magical energy can be regained with some rest - magic being a form of energy naturally produced and stored in the cells of wixes constantly - it is often so startling a shock to their system many a wix has suffered a heart attack on being exposed to it. Thankfully, it is very rare for Timmiaruq to do this - not only is it a risk for these relatively magically and physically weak creatures to land, they do not gain as much magic as they drain and are at a huge risk when approaching those they seek to drain.

Timmiaruq feathers are often used in potions which might otherwise require Chizpurfle fangs, as a far more potent variant ingredient. Their potency increases the effect of the potion as well as how long the potion will last in storage. Despite all these things however: Timmiaruq are surprisingly weak both physically and magically. Most of their magic is inherent, purely there to maintain their physical abilities - combining bird and human physiology, having functioning wings - with the exception of their ability to eat magic. Physically, most of their strength is in their wings, which they tend to carefully and constantly seek to keep from harm.


(Image Source)

(Usage of this image - and other images in the photoset this is from - was kindly given by @sdoodles. The name for this creature and their ability to drain energy were also suggested by them. I hate that I have to include this but PLEASE DO NOT DELETE THE IMAGE SOURCE OR MY CAPTION.) 

Climate Change: Species On The Move: Phytoplankton (InsideClimate News)

A phytoplankton bloom in the Barents Sea, August 2011 (Credit: Jeff Schmaltz/NASA Earth Observatory)

About This Species

Phytoplankton are tiny—almost microscopic—but don’t let that fool you. These free-floating, plant-like organisms occupy the bottom of the ocean’s food chain, making them vital to the ecosystem. They live in the ocean and in sea ice, and like plants on land, phytoplankton need sunlight. Most are buoyant and float in the upper portion of the ocean where sunlight can reach them. They provide food for a wide array of species, like whales, shrimp, snails and jellyfish.

In the Arctic, phytoplankton blooms are triggered by the melting of sea ice in spring. Light green shelves of phytoplankton swirl into the Arctic Ocean. As the climate changes and the oceans warm, the timing of phytoplankton blooms is shifting and the species are showing up in different places altogether. As this happens, the effects ripple outward, growing in significance along the way.

Status

Warmer oceans are already resulting in earlier blooms. A new study in the journal Science found that for every degree that the water increased, one species of phytoplankton bloomed four or five days earlier. From 2003 to 2012, the bloom of that one species shifted 20 days earlier—a trend the researchers projected would continue as the oceans warm further.

Many species tie their lifecycles to the timing of the bloom. When phytoplankton blooms earlier, the next level of the food chain—zooplankton—can miss its opportunity to feed on phytoplankton. That mismatch can work its way up to the fish that eat the zooplankton, the seals that eat those fish and the polar bears at the top of the food chain.

In addition, when thick, old sea ice is thinned by warming, sunlight is able to permeate the surface and stimulate phytoplankton to bloom within the ice. What was once a white surface is made dark, which absorbs more energy from the sun and exacerbates warming.

Range Shifts

A combination of ocean warming and shifts in ocean circulation and surface conditions has phytoplankton on the move. In the coming century, species will shift northeastward, with major consequences for the ecosystem.

Looking Forward

That northeastward shift is happening at a faster rate than previously estimated. A study published in March 2015 in the Proceedings of the National Academy of Sciences described the dynamic combination of rising ocean temperatures and changes in ocean circulation and surface conditions that are driving this shift.

The study examined 87 North American phytoplankton species, looking at historical data from 1951-2000 and projections for 2051-2100. It found that 74 percent of the species it studied were moving toward the North Pole at a rate of 8 miles per decade, and that 90 percent were shifting eastward at a rate of 26.5 miles per decade.

“Anthropogenic climate change over the coming century may drive North Atlantic phytoplankton species ranges and communities to move in space, or shift, and cause communities to internally reassemble, or shuffle,” the study says.

washingtonpost.com
In Greenland, a once doubtful scientist witnesses climate change's troubling toll
Petermann glacier has lost huge ice islands since 2010, and Andreas Muenchow thinks another break is coming.

Half a decade before he took this trip to the farthest reaches of the north, Andreas Muenchow had his doubts about whether warming temperatures were causing one of the world’s great platforms of ice to melt and fall apart.

He even stood before Congress in 2010 and balked on whether climate change might have caused a mammoth chunk of ice, four times the size of Manhattan, to break off from this floating, 300-square-mile shelf. The University of Delaware oceanographer said he wasn’t sure. He needed more evidence.

But then the Petermann Ice Shelf lost another two Manhattans of ice in 2012, and Muenchow decided to see for himself, launching a project to study the ice shelf intensively.

He was back again in late August, no longer a skeptic. It was hard not to be a believer here at 81 degrees north latitude, where Greenland and Canada very nearly touch. The surface of the bumpy and misshapen ice was covered with pools and puddles, in some cases frozen over but with piercing blue water beneath. Streams carved through the vast shelf, swelling into larger ponds or even small lakes.

Continue Reading.

Climate Change is Isfet

It goes like this.

Life cannot exist in perfect, sterile, unchanging balance. The only time the universe will be in complete balance is during its heat death, when all reactions have reached equilibrium and there is no longer any free energy. Chaos and entropy are terrifying conceptually, but necessary.

I refuse to believe that a perfect world is a stable world. A stable world is a dead world. A world without change is a stagnant, decaying, wretched world. Maybe in an afterlife, this is different, but in our current, living one? Hard pass.

There is, however, a limit to the amount of change and chaos that life can cope with before it gets overwhelmed. We typically refer to an excess of chaos as a “catastrophe” or a “cataclysm.” When natural disasters strike and cause a massive loss of life, when species are hunted to extinction or ethnic groups are slaughtered en masse, when oil spills ruin a patch of water and sand for years to come, when plagues sweep across the land… these things can overwhelm life, beat it down, and perhaps even destroy it.

And we see this in Egyptian mythology as well. The land of the gods is said to be the land of pure ma’at, perfect balance and justice and order. The land of mankind contains both isfet and ma’at, and a balance must be struck between the two. An excess of isfet, chaos, will lead to the fall of our world and ourselves.

So where does climate change come into this?

Keep reading