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Categories: Geoscience: Severe Weather
Published When migrating birds go astray, disturbances in magnetic field may be partly to blame
(via sciencedaily.com) Disturbances to Earth's magnetic field can lead birds astray -- a phenomenon scientists call 'vagrancy' -- even in perfect weather, and especially during fall migration. While other factors such as weather likely play bigger roles in causing vagrancy, researchers found a strong correlation between birds that were captured far outside of their expected range and the geomagnetic disturbances that occurred during both fall and spring migrations.
Published NASA says 2022 fifth warmest year on record, warming trend continues
(via sciencedaily.com) Earth's average surface temperature in 2022 tied with 2015 as the fifth warmest on record, according to an analysis by NASA. Continuing the planet's long-term warming trend, global temperatures in 2022 were 1.6 degrees Fahrenheit (0.89 degrees Celsius) above the average for NASA's baseline period (1951-1980), scientists report.
Published Using machine learning to help monitor climate-induced hazards
(via sciencedaily.com) Combining satellite technology with machine learning may allow scientists to better track and prepare for climate-induced natural hazards, according to new research.
Published That sinking feeling: Are ice roads holding up under January's unseasonable warmth?
(via sciencedaily.com) Vital winter ice road infrastructure may be cracking and sinking under the load of an unseasonably warm start to the new year across Europe and North America. New research warns that ice roads, essential for moving people, food, medicine and fuel in remote northern communities, as well as heavy machinery used by industry, may become unsustainable as the climate warms. This poses significant issues this century.
Published Landscaping for drought: We're doing it wrong
(via sciencedaily.com) Original source Despite recent, torrential rains, most of Southern California remains in a drought. Accordingly, many residents plant trees prized for drought tolerance, but a new study shows that these trees lose this tolerance once they're watered.
Published Exotic wheat DNA helps breed 'climate-proof' crops
(via sciencedaily.com) Wheat containing exotic DNA from wild relatives benefits from up to 50 per cent higher yields in hot weather compared with elite lines lacking these genes.
Published Fathoming the hidden heatwaves that threaten coral reefs
(via sciencedaily.com) The severity of marine heatwaves (MHWs) that are increasingly impacting ocean ecosystems, including vulnerable coral reefs, has primarily been assessed using remotely sensed sea-surface temperatures (SSTs), without information relevant to heating across ecosystem depths. Here, using a rare combination of SST, high-resolution in-situ temperatures, and sea level anomalies observed over 15 years near Moorea, French Polynesia, we document subsurface MHWs that have been paradoxical in comparison to SST metrics and associated with unexpected coral bleaching across depths. Variations in the depth range and severity of MHWs was driven by mesoscale (10s to 100s of km) eddies that altered sea levels and thermocline depths and decreased (2007, 2017 and 2019) or increased (2012, 2015, 2016) internal-wave cooling.
Published Spring sunny heat waves caused record snow melt in 2021, adding to severe water supply impacts across the Western US
(via sciencedaily.com) Researchers examine the role of spring heatwaves on the melting rates of mountain snowpacks across the West. They found that in April 2021, record-breaking snowmelt rates occurred at 24% of all mountain snowpack monitoring sites in the region, further compounding the impacts of extended drought conditions.
Published Cyclone researchers: Warming climate means more and stronger Atlantic tropical storms
(via sciencedaily.com) Tropical cyclone researchers report a warming climate could increase the number of tropical cyclones and their intensity in the North Atlantic, potentially creating more and stronger hurricanes. In a second research paper, researchers examine a possible explanation for the relatively constant number of tropical cyclones around the globe every year.
Published How climate change impacts the Indian Ocean dipole, leading to severe droughts and floods
(via sciencedaily.com) Researchers now have a much better understanding of how climate change can impact and cause sea water temperatures on one side of the Indian Ocean to be so much warmer or cooler than the temperatures on the other -- a phenomenon that can lead to sometimes deadly weather-related events like megadroughts in East Africa and severe flooding in Indonesia.
Published Climate risk insurance can effectively mitigate economic losses
(via sciencedaily.com) Original source Global warming is expected to lead to an accumulation of particularly intense hurricanes in the United States. This may substantially increase the economic losses caused by these storms. Better insurance could effectively mitigate the climate change-induced increase in economic losses. This is shown in a new study examining the effectiveness of climate risk insurance in the US.
Published The adverse health effects of disaster-related trauma
(via sciencedaily.com) A new study has found that individuals from disadvantaged backgrounds are more likely to experience disaster-related home loss, and they are also more likely to develop functional limitations following the disaster.
Published Skiing over Christmas holidays no longer guaranteed -- even with snow guns
(via sciencedaily.com) Original source For many people, holidays in the snow are as much a part of the end of the year as Christmas trees and fireworks. As global warming progresses, however, white slopes are becoming increasingly rare. Researchers have calculated how well one of Switzerland's largest ski resorts will remain snow reliable with technical snow-making by the year 2100, and how much water this snow will consume.
Published New study models the transmission of foreshock waves towards Earth
(via sciencedaily.com) As the supersonic solar wind surges towards Earth, its interaction with our planet's magnetic field creates a shock to deflect its flow, and a foreshock filled with electromagnetic waves. How these waves can propagate to the other side of the shock has long remained a mystery.
Published Warming oceans likely to shrink the viable habitat of many marine animals -- but not all
(via sciencedaily.com) A new article adds a new chapter to the story of how some animals may respond to the warming oceans.
Published Researchers investigate development of coastal peatland in Indonesia over thousands of years
(via sciencedaily.com) Tropical peatlands are one of the most efficient carbon sinks. The flipside is that they can become massive emitters of carbon if they are damaged, for instance by land use change, degradation or fire. This can lead to faster climate warming. Researchers now show how peatland in the coastal areas in Sumatra and Borneo in Indonesia developed over thousands of years and how climate and sea level influenced their dynamics throughout.
Published Past eight years: Warmest since modern recordkeeping began
(via sciencedaily.com) Earth's global average surface temperature in 2021 tied with 2018 as the sixth warmest on record, according to independent analyses done by NASA and NOAA. Collectively, the past eight years are the warmest years since modern recordkeeping began in 1880.
Published New insights into sea ice and climate change
(via sciencedaily.com) A 170 m record of marine sediment cores extracted from Adélie Land in Antarctica is yielding new insights into the complicated relationship between sea ice and climate change.
Published New study ties solar variability to the onset of decadal La Nina events
(via sciencedaily.com) A new study shows a correlation between the end of solar cycles and a switch from El Nino to La Nina conditions in the Pacific Ocean, suggesting that solar variability can drive seasonal weather variability on Earth.
Published Antarctic seals reveal worrying threats to disappearing glaciers
(via sciencedaily.com) More Antarctic meltwater is surfacing than was previously known, modifying the climate, preventing sea ice from forming and boosting marine productivity- according to new research. For the first time, researchers have been able to obtain full-depth glacial meltwater observations in winter, using instruments attached to the heads of seals living near the Pine Island Glacier, in the remote Amundsen Sea in the west of Antarctica.