NASA Earth Observatory:

In September 2022, vast areas atop the Greenland ice sheet melted. Some scientists think the widespread late-season melting—the most on record for any September—could have implications for the ice sheet next year.

Greenland’s melting season typically runs from May to early September. The 2022 season started slowly, as lower-than-average air temperatures in May and June culminated in the least amount of spring melting in a decade. Melting continued at a modest pace throughout the summer, with a surge in mid-July. At its peak on July 18, surface melting spanned 688,000 square kilometers (266,000 square miles) of the ice sheet.

A late-season warm spell brought a substantial melting event from September 1–6. At its peak on September 3, melting occurred across 592,000 square kilometers of the ice sheet—the second-largest melting spike of the 2022 season and the largest for any September since the start of record-keeping in 1979. Melt events of this magnitude are unlikely in September because seasonal temperatures usually drop as the hours of sunlight decrease.


Fiona’s Incredible Power

September 24, 2022

Best documentation I’ve seen of how storm surges do damage – like a tidal wave.

Jason Box released a video today looking at Fiona’s extended impact in coming days, as it the vortex draws moisture and heat to high elevations on the southern Greenland Ice Sheet.

“An Extreme event”.


Fiona Impacts Now Visible

September 24, 2022

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Discussion with Greta Thunberg, half hour.

Preview clip below.

I did not remember this episode, with young Dennis Hopper, but it’s chilling, and more demonstration if any was needed, of Serling’s genius.

Hurricane Fiona looking more and more like Superstorm Sandy.

I spoke to good friend and Ocean and Atmosphere expert Jennifer Francis this afternoon, from her home in Massachusetts.

Mathew Gross on Twitter:

The severity of what’s about to occur in Nova Scotia on Friday night cannot be overstated! A hybrid hurricane will result from the violent phasing of a sharp cutoff trough and major hurricane Fiona moving into the same waters well east of New England.

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Incredible footage.

Yale Climate Connections:

NOAA oceanographer Greg Foltz knew it was going to be a long night last fall when he saw Hurricane Sam‘s trajectory. Glued to the National Hurricane Center data, Foltz, who works in NOAA’s Atlantic Oceanographic and Meteorological Laboratory in Miami, examined the storm’s tracking and intensity and conducted an analysis of the satellite images and data.

He needed to estimate the hurricane’s trajectory over the next 12-24 hours so he could position his instruments. He wasn’t trying to pull his costly equipment away from the hurricane’s path, though. In fact, he was doing the opposite. He wanted to position an uncrewed surface vehicle (USV) called a Saildrone right in the path of the storm. A direct hit by the ferocious Category 4 storm was just what he was looking for.

As he closely monitored the storm, Foltz sent messages to Saildrone’s “mission control” when he wanted to change the vehicle’s path. For example, if he thought the storm would veer a little further to the west, he would send the team a new waypoint to adjust it.

“It was a constant back and forth adjusting the location that we wanted the Saildrone to be in to go through the strongest part of the storm,” Foltz says. “I was directing in real time where to take the Saildrone to get it in the best spot to go through the strongest part of the hurricane, and that was exciting. I didn’t really sleep at all the night before as I was trying to get it into the right position.”

Equipped with a “hurricane wing,” the Saildrone could be remotely controlled, with scientists adjusting the sail from afar in order to steer the craft. The hurricane Saildrones differ from some of the company’s other products, which are used for projects like ocean mapping, ocean data collection, and maritime domain awareness,

“It’s that difference of a smaller, stubbier, hardier wing that we use with the hurricane drones to help improve their endurance and capability to survive during some of the very rough weather they may find themselves in during hurricane season,” says Matt Womble, Director of Ocean Data Programs for Saildrone, Inc.

As Hurricane Sam’s powerful Category 4 winds and monster waves battered the USV, the team waited and watched. Live data and video footage rolled in, allowing them a peek into the storm’s fury. After the weather calmed, they were able to steer it to Bermuda to retrieve it, mostly unscathed.

Expanding Hurricane Saildrone project this hurricane season

After last year’s successful mission, NOAA and Saildrone are expanding the project this year by adding two additional Saildrones, for a total of seven. Hurricane season runs from June to November, and this year two drones are positioned in the Gulf of Mexico and five others are in the Atlantic and Caribbean. The researchers deploy them to locations where they think there is a good chance a storm will develop. Last year, the Saildrones collected data about Hurricane Sam, in addition to four tropical storms, as well as a few weaker tropical depressions and storms.

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Below, full speech without subtitles.

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