Heat island effect may drive rising sea levels, creating extra risk for populated coastal areas
By Summit Voice
SUMMIT COUNTY — Scientists with the UK’s University of Southampton say they may have documented another unanticipated global warming feedback loop, as sea surface temperatures in coastal regions appears to be rising up to 10 times faster than the global average.
Based on a study in the famed Venice Lagoon, the researchers said they think the warming is due at least in part to the urban heat island effect, with highly developed areas radiating extra heat to their surroundings. The findings suggest the sea surface temperature increases driven by the heat island effect may outpace other factors in coastal areas. Continue reading “Climate: Ocean temps rising especially fast along coasts”→
I posted a photo essay focusing on color just a couple of weeks ago, and I considered re-using some of those images, but then I grokked on the meaning of colorful for a few minutes. After looking at the previous post, I realized that many of the images focused on one color, or perhaps several hues or shades of similar colors. Colorful, I think, has subtly different meaning (several meanings, actually), so cruised through the archives to pick out a new set, and few things epitomize colorful as well as a platter of Easter eggs.
New study pinpoints rate of subsidence, which is partly due to plate tectonicsas the Adriatic plate subducts beneath the Apennines
By Summit Voice
SUMMIT COUNTY — Venice could sink deeper into its own lagoon by another three inches or so during the next 20 years, according to a team of researchers with the Scripps Institution of Oceanography at the University of California.
Using some of the latest technology available, the scientists say they’ve come a little closer to answering the vexing question of whether the city is actually drifting downward. Some recent studies suggested that’s not the case, but the recent analysis of GPS and satellite radar data shows otherwise.
“Venice appears to be continuing to subside, at a rate of about 2 millimeters a year,” said Yehuda Bock, a research geodesist with Scripps, and the lead author of the new article on the city’s downward drift. “It’s a small effect, but it’s important,” he said.
Given that sea level is rising in the Venetian lagoon, also at 2mm per year, the slight subsidence doubles the rate at which the heights of surrounding waters are increasing relative to the elevation of the city, he noted. In the next 20 years, if Venice and its immediate surroundings subsided steadily at the current rate, researchers would expect the land to sink up to 80 mm (3.2 inches) in that period of time, relative to the sea. Continue reading “Is Venice sinking into the sea — or not?”→
SUMMIT COUNTY — OK, I’ll admit, I’m a Europhile, but I’ll blame it on my bi-cultural upbringing and leave it at that. Despite my affection for the “Old Country,” I fell in love with the American West when I first traveled here some 30 years ago and never left. But I still enjoy revisiting old haunts like Amsterdam every now and then, as well as discovering new locales. And obviously, I had some fun post-processing a few of these images. I usually post more images than this in the daily photo essay, but there’s so much to look at in each one of this pictures, I thought I’d leave at this. Continue reading “Morning photo: Euro-mania”→
Shifting storm patterns may have implications for preservation of historic city
By Summit Voice
SUMMIT COUNTY — Although sea-level rise caused by global warming is considered a serious threat to Venice, new research suggests that storm surges in the northern Adriatic Sea may decrease in frequency by 30 percent in the next few decades, leaving the historic city less vulnerable to damaging floods.
The storm surges that push water into the maze of canals are generated by the passage of deep low-pressure systems, which cause sea level pressure gradients and strong, south-easterly Sirocco winds along the Adriatic Sea. These forces combine to push water into the northern end of the basin where Venice is located.
Some climate change models show that storm will shift in the coming decades. The climatologists who published the recent study said their work shows changes in extreme tidal levels under climate change must be considered on a location-by-location basis in spite of the projected increase in global sea level. Continue reading “Global warming: Venice storm surges may decrease”→
SUMMIT COUNTY — My trip to Florida in March was a jumbled rush in many ways, but we managed to find time to visit some quiet areas nearly every day — sunset walks on the beach, or evening strolls through scrubby pinelands. I posted several photoblogs while I was there, but until recently, I haven’t gone back to revisit that part of my archives. Here are a few selections from the sunshine state. Continue reading “Morning photo: Best of Florida”→
SUMMIT COUNTY — The semi-regular randomness photoblog returns, in which the photo editor does the two-finger scroll to see where the cursor stops. This post isn’t totally random, as it does have a bit of a travel theme. Most of the images link to other posts with information about the story, so don’t be shy — click away! Continue reading “Morning photo: Here and there …”→