After intensifying explosively and becoming the strongest storm of the year earlier this week, Super Typhoon Vongfong is churning toward U.S. military bases on Okinawa and is expected to make landfall in Japan on Saturday.
The powerful storm comes on the heels of Typhoon Phanfone, which left at least seven dead in Japan earlier this week, including three U.S. Air Force personnel who were swept away by waves on Okinawa. (Click on the thumbnail above for the forecast track of Vongfong from the Joint Typhoon Warning Center.)
Vongfong peaked on Tuesday with winds approaching 180 miles per hour, making it about as strong as Super Typhoon Haiyan, which killed more than 6,000 people in The Philippines in 2013. It probably ranks as among the strongest 30 storms on Earth since 1970, according to the Washington Post. Read More
Even as climate change continues to be felt around the world, its impact in the Arctic and Antarctic are, in part, a tale of two poles.
The National Snow and Ice Data Center is out today with its annual review of sea ice conditions, and in the Arctic the news is in keeping with what has happened in previous years: the geographic extent of this floating veneer of frozen sea water remains low.
That extent typically reaches its lowest point in September, after a summer of sun and relatively warm temperatures in the far north. As I reported previously, this year, the low point was hit on September 17th. It was the sixth lowest in the satellite record, which stretches back to 1978.
This continues a long-term trend: The monthly September ice extent from 1979 to 2014 has declined 13.3 percent per decade compared to the 1981 to 2010 average. (Click on the thumbnail image at right for a graph showing that trend.)
One very legitimate question to pose is what Arctic sea ice concentrations were like going farther back in time. That’s difficult to pin down precisely, because of the lack of accurate and geographically extensive records. But scientists have made some estimates using indirect records. Here’s how NSIDC explains it: Read More
On October 2, the Sun let loose with a bright flash of radiation — a solar flare — propelling a cloud of particles probably weighing a trillion tons or so out into space at a million miles per hour.
Solar flares and associated plasma belches likes this (the latter are known more properly as coronal mass ejections) are relatively common during the peak of the ~11-year solar cycle — which is occurring right now. The flare was moderate in magnitude (M7.3 class).
While the flare itself may not have been particularly noteworthy, the high-resolution image of the solar plasma being flung out into space is undeniably spectacular. It was captured by NASA’s Solar Dynamics Observatory spacecraft.
In geosynchronous orbit around Earth, SDO has a continuous view of the sun. (That’s SDO in the thumbnail image above. Click it for an enlarged view.)
At one point, the swirling cyclone in the animation of weather satellite images above was producing winds of hurricane strength. Luckily, as it neared shore it weakened.
Even so, it brought heavy rain to British Columbia on Wednesday, Sept. 24.
Here’s what it actually looked like from the shore:
In 2014, Arctic sea ice has continued in its long-term and dramatic decline, a process that is likely helping to accelerate the pace of overall climate change in the north.
That’s the news from the National Snow and Ice Data Center, announced on Monday — just as world leaders were preparing to meet at the United Nations in New York to grapple with climate change.
According to the NSIDC, Arctic sea ice — which floats atop the ocean — likely reached its minimum extent for the year on Sept. 17th:
This is now the sixth lowest extent in the satellite record and reinforces the long-term downward trend in Arctic ice extent. Sea ice extent will now begin its seasonal increase through autumn and winter.
Meanwhile, at the opposite pole, Antarctic sea ice has: Read More
In early September, I launched a new semi-regular feature here at ImaGeo, “Every Day Wonders,” with a photo of a blossoming thundercloud over unusually verdant fields here in Colorado.
The image above is the second installment.
Doing her (or his?) best to imitate a leaf, this katydid was clinging to my front door here in Niwot, Colorado on Sunday. I spotted her when a neighbor also came knocking to return my dog, Moe, who had escaped the back yard through an open gate. (That’s Moe in the thumbnail at right.)
This katydid’s normal habitat would be in the tops of the trees, where her leaf-mimicking color and patterning would help her escape the attention of birds, bats and other predators. When I opened the door to speak to my neighbor, I caught sight of her out of the corner of my eye and thought, momentarily, that she was a leaf. But that seemed odd: How was a leaf clinging to my door?
At that point, my neighbor pointed her out, and I dashed inside to get my camera.
Katydids are in the Tettigoniidae family. They’re related to grasshoppers, from which they can be distinguished by their very long antennae that can be longer than their bodies. By contrast, grasshoppers feature much shorter antennae.
On summer and early autumn nights, male katydids “sing” to attract mates by rubbing their front wings together. To some human ears, the “lyrics” sound like “Katy did, Katy didn’t” — thus, the common name for this lovely insect. Check it out here.
— NWS Boise (@NWSBoise) September 18, 2014
No sooner had I hit ‘Publish’ on my earlier post than I found this mind boggling photograph of California’s King Fire. It’s so dramatic that I decided to share it with you in a separate post.
I found it on Twitter while searching on #KingFire. Head over there for more compelling photos of the blaze. And for stunning satellite images, as well as an explanation of pyrocumulus clouds and information about the climate context, please see my earlier post here.
California’s King Fire continues to blaze out of control in heavy timber and steep terrain in Eldorado National Forest north of the community of Pollock Pines.
The fire ignited Saturday and spread with breathtaking speed through a landscape desiccated by hot temperatures and California’s profound and record-breaking drought. So far, the King Fire has scorched more than 70,000 acres, forcing nearly 2,800 people to evacuate their homes. As of this morning, 4,425 people were participating in the battle against the blaze, which is just 10 percent contained.
A 37-year-old man from Pollock Pines has been arrested on a felony arson charge in connection with the fire.
The false-color satellite image at the top of the post shows areas of burning and a long smoke plume. It was captured on Wednesday, September 17 by the VIIRS instrument on the Suomi NPP satellite.
For a view from the surface, click the thumbnail at right. It shows a towering pyrocumulus cloud that blossomed above blaze. The Weather Guys at the Cooperative Institute for Meteorological Satellite Studies offer a clear explanation of this fascinating phenomenon:
The fires that generate these clouds can be man-made or natural. A big fire produces strong upward moving air currents that carry water vapor and ash upward. The water vapor can condense on the ash, forming cloud drops. The vigorous upward motions produce these pyrocumulus clouds that look similar to thunderstorm clouds, which also form due to strong upward moving air.
Here’s what the pyrocumulus clouds from the King Fire looked like from space: Read More
August and the summer of 2014 have both gone down in the books as the warmest such periods since modern record keeping began in 1880, the National Oceanic and Atmospheric Administration has announced.
And with a warmth-bringing El Niño probably emerging, the odds are very good that the rest of the year will be warmer than the long-term average — which means we’re likely on track for 2014 being declared the warmest year on record.
So you might be wondering: Why the photo above of rugged mountains rising right up from the water in Norway’s Lofoten Islands, as well as the thumbnail photo to the right from the same area? Here’s part of the reason:
Heavy downpours from the still-swirling remnants of Hurricane Odile could bring life-threatening floods and mudslides from southeastern Arizona across southern New Mexico and into western Texas and the panhandle through Saturday, according to the National Weather Service.
Flooding has already occurred in Arizona — just 10 days after Hurricane Norbert drenched the region, producing a record high single-day rainfall total in Phoenix. This also marks the first time in recorded history that two tropical systems have affected Arizona in such a short period of time, according to the weather service’s Tucson office.
Color infrared imagery from the GOES-East weather satellite this morning show large amounts of water vapor over the region: Read More