Warmer lake temperatures can also shut down industry.
Global warming is leading to later freeze - up of the Great Lakes and
warmer lake temperatures.
The warmer those lake temperatures, the more moisture in the air, and the greater potential for lake effect snows.
I personally hear a researcher speculate that
warming lake temperatures could spur the growth of algae, reducing the water's clarity.
Not exact matches
With Sunday's air
temperature sitting at 83 degrees and water
temperature at 65 degrees at noon, the area had its first weekend
warm enough to dip a toe into
Lake Michigan.
Warm temperatures have forced the builders of the Ice Palace at the Saranac
Lake Winter Carnival to put it under a tarp.
SARANAC
LAKE — This year's challenging weather with warm temperatures and lack of snow provided an obstacle in itself for contestants of the Saranac Lake Winter Carnival's Arctic Golf Build - an - Obstacle Contest, organizers repor
LAKE — This year's challenging weather with
warm temperatures and lack of snow provided an obstacle in itself for contestants of the Saranac
Lake Winter Carnival's Arctic Golf Build - an - Obstacle Contest, organizers repor
Lake Winter Carnival's Arctic Golf Build - an - Obstacle Contest, organizers reported.
While the
temperatures will be cold and the
lakes warm, the amount of snow will be limited by the direction of the wind and relatively dry air in the upper atmosphere.
As
temperatures warm, the Arctic permafrost thaws and pools into
lakes, where bacteria feast on its carbon - rich material — much of it animal remains, food, and feces from before the Ice Age — and churn out methane, a heat trapper 25 times more potent than carbon dioxide.
Previous work by Hook using satellite data indicated that many
lake temperatures were
warming faster than air
temperature and that the greatest
warming was observed at high latitudes, as seen in other climate
warming studies.
Higher
lake temperatures may speed the conversion of carbon - rich organic matter in
lake sediments into methane and carbon dioxide, gases that once released into the atmosphere could exacerbate global
warming.
One reason is that
warmer wintertime
temperatures are producing less ice atop
lakes that normally freeze over.
The Michigan Tech chamber works differently due to cloud mixing between a hot and cold surface, the same process that forms clouds or fog over a
lake on fall days when the water
temperature is
warmer than the air
temperature.
Surface waters become
warm enough (in spring) or cool enough (in autumn) to reach 4 ° Celsius, the
temperature at which these waters become dense and sink toward the
lake's bottom, mixing the waters.
«In
warmer lakes, those
temperature changes can be really important.
The Michigan Tech chamber creates clouds through cloud mixing between a hot and cold surface — the same process that forms fog over Portage
Lake on fall days when the water
temperature is
warmer than the air
temperature.
In response, lakebed
temperatures of Arctic
lakes less than 1 meter (3 feet) deep have
warmed by 2.4 degrees Celsius (4.3 degrees Fahrenheit) during the past three decades, and during five of the last seven years, the mean annual lakebed
temperature has been above freezing.
Deep
lakes warm very slowly in the spring, and small changes in water
temperature at the end of winter can lead to large changes in the timing of summer stratification for these
lakes.
Another factor at play could be the delicate balance between precipitation and evaporation which Arctic
lake levels depend on:
warmer temperatures and higher winds could cause more evaporation.
In theory,
warmer temperatures across the region should be decreasing the snow pack — which should also boost the
lakes.
Now this weird combination of wind, long - lasting
lake ice and
warming temperatures are causing these ice spikes to surge out of
lakes.
In a rare benefit from the ongoing drought, this summer has been so dry that the
warm water
temperatures are not resulting in major harmful algal blooms, such as one that occurred on
Lake Erie last year.
Ironically, if the
lakes enter the fall with record
warm temperatures, it could herald an above - average season for
lake effect snow, which occurs when cold, dry air blows across large expanses of comparatively milder waters.
As you well know, overall, it's been a
warm start to winter across the U.S. Just this past week, record high
temperatures were falling from the Great
Lakes through the Mid-Atlantic and up into the Northeast.
Higher
temperatures lead to more evaporation from
lakes, rivers and oceans, and
warmer air can hold more moisture.
I'm wearing a pair of
warm gloves, a scarf and a hat (if the
lake or the surface in question is icy
temperatures are well below zero).
No. 3 Corvette C6.R Continues Hot Streak in High Desert SALT
LAKE CITY — Corvette Racing's final
warm - up for the 24 Hours of Le Mans was run in near - record
temperatures as a heat wave in Utah's high desert tested America's premier production sports car team.
Lake Superior is very
warm right now, so the
temperature of the water is perfect.
The city lies in the lowland, where once there was a
lake, so there is a unique climate situation: the low
temperature holds almost all year round, although in the nearby Santa Cruz it is much
warmer.
Even though the mornings are relatively cool, The
temperatures are still
warm during the day time and a walk around the
lake is a wonderful experience.
Lakes Entrance is
warmer and sunnier than most parts of Victoria in winter, when the
temperature can rise to 18 - 20 degrees.
The algae may have initially spread across the western side of the
lake because of windy weather, but calm weather and
warm temperatures after the storm allowed green scum to build on the surface... The bloom now covers much of the western half of the
lake.
The paleoclimate record (8.2 kyr, and earlier «large
lake collapses») shows a dramatic drop in surface
temperatures for a substantial period of time when the ocean circulation shuts off or changes, but is that actually what would be expected under these
warming conditions?
Loso, M.G. (2008) Summer
Temperatures during the Medieval
Warm Period and Little Ice Age Inferred from Varved Proglacial
Lake Sediments in Southern Alaska, Journal of Paleolimnology 41, 117 - 128, DOI: 10.1007 / s10933 -008-9264-9.
Mean and maximal
temperatures of the upper 20 m of the
lake increased by > 2 oC over 21 years with the 6 coolest years in the early 1980s and the 6
warmest years in the late 90s and early 2000s.
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Not surprisingly, we see a long - term increase in
lake effect snowfalls as
temperatures have
warmed during the last century (see figure below).
If we figure say 10 chimneys in each group, and an average of 2 litres per second per chimney, and that the tiny amount of diving has only found 1 % of the vents, and the water
temperature coming out of the vents is 80 °C, then they would
warm the
lake by 1 ° C in about 70 years...
As you can see, on a single day the surface
temperature of the
lake varies by 4 ° C from coldest to
warmest.
These methods have been significantly improved by fully coupling the hydrologic cycle among land,
lake, and atmosphere.94, 95 Without accounting for that cycle of interactions, a study96 concluded that increases in precipitation would be negated by increases in winter evaporation from less ice cover and by increases in summer evaporation and evapotranspiration from
warmer air
temperatures, under a scenario of continued increases in global emissions (SRES A2 scenario).
The old calibration (Powers et al., 2005, Geophysical Research Letters) gave us modern
temperatures above 30 degrees celsius; clearly too
warm for a
lake that averages 26 degrees celsius today!
His position: • No evidence of increasing
lake clarity as a result of secchi measurements since 1946 • The interplay of stratification and plankton productivity are not «straightforward» • Challenges O'Reilly's assumption on the correlation of wind and productivity - the highest production is on the end of the
lake with the lowest winds • A strong caution using diatoms as the productivity proxy (it is one of two different
lake modes) • No ability to link climate change to productivity changes • More productivity from river than allowed for in Nature Geopscience article • Externally derived nutrients control productivity for a quarter of the year • Strong indications of overfishing • No evidence of a climate and fishery production link • The current productivity of the
lake is within the expected range • Doesn't challenge recent temp increase but cites
temperature records do not show a
temperature rise in the last century • Phytoplankton chlorophylla seems to have not materially changed from the 1970s to 1990s • Disputes O'Reilly's and Verbug's claims of increased
warming and decreased productivity • Rejects Verburgs contention that changes in phytoplankton biomass (biovolume), in dissolved silica and in transparency support the idea of declining productivity.
During the Holocene, by their own figures, the
Lake Tanganyika LST was 3 C
warmer, and changed
temperature faster, than in the last fifty years of their more recent proxy record.
«But based on
lake sediments from Baffin Island, our data show that this area of the Arctic experienced
temperatures five degrees
warmer than today,» said Briner.
«The human impact on global climate is small, and any
warming that may occur as a result of human carbon dioxide (CO2) and other greenhouse gas emissions is likely to have little effect on global
temperatures, the cryosphere (ice - covered areas), hydrosphere (oceans,
lakes, and rivers), or weather.
Combine the satellite trend with the surface observations and the umpteen non-
temperature based records that reflect
temperature change (from glaciers to phenology to
lake freeze dates to snow - cover extent in spring & fall to sea level rise to stratospheric temps) and the evidence for recent gradual
warming is, well, unequivocal.
Satellite
temperature measurements show similar
warming; most glaciers are shrinking;
lakes and rivers are freezing later and thawing sooner; oceans are expanding; plant and animal communities are mostly moving poleward.
Over the coming weak, abnormally
warm temperatures are again predicted to flare again over the
Lake Baikal region — which will likely reinvigorate the wildfires that have already begun burning there.
For the Upper Plains, Midwest and Great
Lakes regions, the polar jet stays locked in Canada, allowing
warmer - than - normal
temperatures to persist for much of the winter.
«The dramatic changes in
lake ice may also contribute to further
warming of the entire region, because open water on
lakes contributes to
warmer air
temperatures, albeit to a lesser extent than open seawater,» Surdu said.