Articles tagged with Seasonal Changes
Researchers found that climate change positively impacts yellow-bellied marmot survival during short, wet summers and negatively affects it during harsh winters. This study suggests that certain species may benefit in one season while facing unfavorable conditions in another due to climate change.
A global assessment of heatwaves has found increasing frequency and duration since the 1950s, with regions like the Mediterranean experiencing rapid changes. The cumulative heat metric shows accelerating trends worldwide, but not in heatwave intensity.
Fish are highly sensitive to heat during mating and embryonic stages due to temperature-dependent cardiovascular strain. Climate change may force up to 60% of all fish species to abandon traditional spawning areas.
Tropical Cyclone Boris weakened to a remnant low-pressure area over the Central Pacific Ocean, dissipating by June 30. The NASA-NOAA satellite animation provided an image of the storm's progression from June 26 to June 29.
Deforestation and land-clearing in Brazil's Cerrado biome are degrading weather conditions, reducing corn yields and increasing temperatures. Climate change impacts on the region's agricultural production are a concern for Brazil's food supply.
Climate researchers projected changes in nine monsoon regions across five continents, revealing delayed onset and intensified seasonal fluctuation. The study found that reduced greenhouse gas emissions under RCP2.6 scenario could minimize long-term shifts, while RCP8.5 scenario predicts significant changes.
During an unusually ice-free season, Adélie penguins in East Antarctica covered more ground while swimming for prey, resulting in shorter dives and increased foraging success. This led to faster chick growth and increased body mass in adult males and females.
Researchers found a seasonal bias in the sex ratio of brown-headed cowbird offspring, with more female hatchlings emerging in May and July. The study suggests that male and female cowbirds may have different developmental trajectories, influencing their survival and breeding success.
Exposure to wildfire smoke affects the body's respiratory and cardiovascular systems almost immediately, according to a UBC study. The researchers found that even within one hour of exposure, ambulance dispatches related to respiratory and cardiovascular conditions increased.
A West Virginia University-led study found a significant increase in seasonal flu deaths in US cities with professional sports teams. Researchers analyzed data from the Centers for Disease Control and Prevention and discovered that flu mortality rates rose by 5-24% during pro sports seasons, with the largest jump observed in NHL games.
A study by McMaster University researchers found that higher heat and humidity levels can slow the spread of COVID-19, but longer hours of sunlight are associated with a higher incidence of the disease. This suggests that sunny days may tempt people out more, increasing infection risk.
Researchers tracked the life cycles of 43 plant species over 25 years, finding that some species' growing seasons are lengthening while others are shortening. The study suggests that climate change may be driving seasonal life cycle shifts in plants, but more research is needed to confirm this.
A ten-year study on Asian black bears reveals diet variations based on age, sex, and seasonally abundant resources. Older bears are more carnivorous, while adult males consume more deer due to larger body mass.
A new study found that the rainy season in Northern Central Asia will shift from May-July to March-May by the end of the 21st century. This change is attributed to increased precipitation, with a projected 14.41% rise under the highest emission scenario.
As COVID-19 converges with the flu season, pulmonologist Dr. Benjamin Singer outlines four key factors that can influence the severity of the upcoming flu season: social distancing, vaccination, co-infection diagnosis, and addressing disparities in vulnerable populations.
Tropical Storm Bertha has formed off the coast of South Carolina, with NASA-NOAA's Suomi NPP satellite providing critical forecast guidance. The storm is expected to produce life-threatening flash flooding across eastern and central South Carolina, as well as western North Carolina and southwest Virginia.
A recent Oregon State University study found that 91% of participants bought more fruits and vegetables through the Double Up Food Bucks program. The program increased availability of fresh produce at home and improved overall health, particularly among non-white shoppers.
Researchers found that tree pollen fragments remain airborne for up to 11 hours after spring rains, posing a risk to allergy sufferers. The study advises people to stay indoors during and after rain events, especially thunderstorms, to minimize respiratory impacts.
A study warns that water frog populations in Turkey's Ceyhan and Seyhan deltas are declining by 20% annually, threatening regional extinction by 2050. The authors recommend banning wild frog harvesting and encouraging sustainable frog farming to alleviate pressure on wild populations.
Tropical Depression 1E formed in the Eastern Pacific Ocean on April 25 and reached its peak with maximum sustained winds near 35 mph. The system weakened as it encountered dry air and cooler sea-surface temperatures, eventually becoming a post-tropical remnant low.
Researchers monitor 171 Oregon gray whales using drones and find a compelling relationship between whales' body condition and changing ocean conditions. The study suggests that changes in ocean conditions may be causing skinny whales, with poor upwelling limiting prey availability.
A new study using geolocators shows that black-tailed godwits always start a second nest if their first one fails, revealing a longer breeding season than previously thought. This challenges traditional observation methods, which often disturb the birds' behavior and lead to inaccurate data.
Researchers identified three key chemicals used by male lemurs for attracting females, which are linked to testosterone levels. In contrast, when females were presented with these individual odors or a neutral control, they showed no increased interest.
A five-year study reveals that flamingos consistently spend time with specific close 'friends', forming complex social bonds, including 'married' couples and same-sex friendships. Flamingos' long-lasting friendships are stable over years, suggesting they play a crucial role in survival.
A new study from Columbia University reveals that the balance between soil water and energy availability determines whether plant growth is limited by precipitation or temperature. This finding highlights the crucial role of precipitation in supporting plant photosynthesis, particularly during the late growing season.
A study of 10 on-demand streaming series found that 70% depicted tobacco incidents, with non-compliance to India's rules rampant. Researchers emphasize the need for stricter enforcement and update of WHO guidelines to include streaming services.
A new study reveals that American robins are migrating earlier by about five days each decade, likely due to shifting snow conditions. The birds' flight schedules are being fine-tuned by environmental cues such as snow conditions and when food becomes available.
The new coarse-grained model explains how seasonal changes in rainfall, solar radiation, and vegetation conditions affect surface urban heat islands at a city-wide scale. It provides general insights for city planners and scientists to design heat mitigation strategies.
Researchers create synthetic coronavirus particles to study how they withstand changes in humidity and temperature. The study aims to inform policy decisions on the spread of the virus in different environmental conditions.
A recent study reveals that natural climate cycles significantly influence the base of the food web along the California coast. Climate changes can alter the timing and prevalence of phytoplankton and harmful algal blooms, which are crucial for understanding ecosystem responses to ocean warming.
Research at Mount Rainier National Park finds a growing mismatch between the blooming of iconic wildflowers and visitor peak times due to climate change. The study, led by the University of Washington, used crowd-sourced photos and analysis to model the timing of wildflower blooms and visitor visits from 2009-2015.
A study by Florida Atlantic University found that 75% of female loggerhead sea turtles on Sanibel Island mated singly and stored sufficient sperm for multiple clutches. This suggests that females may not benefit from mating with multiple males to increase opportunities for advantageous traits.
Researchers discovered diapause in African turquoise killifish protects against aging consequences without affecting lifespan or fitness. Genes involved in muscle development and chromatin remodeling factors play critical roles in regulating gene expression during diapause.
A new Boston University School of Public Health study found that couples conceive quickest in late fall and early winter. Seasonal patterns in conception also varied among Northern states, Scandinavia, and the US, with stronger effects in southern states.
Researchers found that within a year of a dam's opening, downstream river temperatures dropped by up to 3.6 degrees F, persisting where the rivers meet the Mekong River. The cooling effect is driven by dams releasing cold water from reservoirs during dry season.
A 16-year German-Egyptian research project has uncovered the history of Asyut's necropolis, revealing over 300 tombs and diverse artworks. The finds have broadened knowledge about the region's cultural and economic boom during the First Intermediate Period and Middle Kingdom.
African satyrid butterfly Bicyclus anynana adjusts its wing eyespot size in response to low temperatures, changing the pattern to resemble a dead leaf. This complex physiological and molecular response is unique among butterfly species, suggesting it evolved gradually over millions of years.
A recent study by Oak Ridge National Laboratory found that tree budburst, or the timing of leaf emergence, is becoming more variable in hotter regions due to rising temperatures. In contrast, cold climates show a more stable pattern of budburst year-over-year.
Tropical cyclones have a drying effect on the Maritime Continent, exacerbating dry seasons. Forecasting tropical cyclone activity can improve predictions for this region's circulation patterns.
A study found that urban areas in the US experience an earlier start to plants' greening season compared to rural areas. The advancement of spring phenology is driven by warmer temperatures, but the rate of change slows down under continued warming.
A new study from McMaster University and Université de Montréal found that the first type of influenza virus exposed to in early childhood determines lifelong immunity. This phenomenon, known as antigenic imprinting, has important implications for pandemic and epidemic planning.
A new study finds that climate change could shrink wine-growing regions by up to 56% unless growers swap varieties. By reshuffling where certain grape varieties are grown, losses can be reduced by half or a third, according to the research.
A CU Boulder-led study reveals human-sparked fires are becoming more frequent and occurring over longer seasons, presenting new challenges for U.S. wildfire managers and firefighters. The shift toward more human-caused fires results in decreased fire intensity and size, but may not be a good thing due to changes in ecosystem roles.
A recent study contradicts a 2019 finding that linked the Netflix series '13 Reasons Why' to an increase in adolescent suicide rates among boys. After controlling for secular trends, the reanalysis found no effect from the show's release on boys or girls.
The resale ticket market appeals to season ticket holders who want to recoup costs, reducing the need for fans to buy full-season passes. This boosts team revenues by creating an alternative supply of tickets.
Scientists studied Martian atmospheric water vapor using ExoMars Trace Gas Orbiter data, finding seasonal changes were the dominant regulator. The study suggests that warm seasons can lead to increased water loss into space, impacting Mars' continued desiccation.
Researchers found large atmospheric pockets of water vapour at an altitude of over 80 km, accumulating in unexpected proportions. The capacity for water to escape increases during certain seasons due to the observed supersaturation rates.
Researchers from Norway, Latvia, and Israel found that allowing slower airplane passengers to board first decreases total boarding time. By simulating passenger movement using physics, the team predicted boarding times for various passenger groups, confirming that slow passengers being boarded first is up to 28% faster.
Research finds that exposure to one subtype of flu virus in childhood can grant extra protection against future infections, but not if the second strain is from a different group. This explains why some people fare better than others when infected with the same strain.
A new analysis reveals significant increases in subsurface runoff and cold season discharge due to thawing permafrost. This shift is expected to alter the Arctic water cycle, with implications for coastal ecosystems and nutrient cycling.
A recent study published in Scientific Reports found that Daylight Saving Time (DST) regulations do not disrupt human cycles, including sleep and labor patterns. The report highlights the impact of latitude on seasonal adaptation of human activity.
A new study published in Scientific Reports found that a geostationary satellite can obtain more cloud-free observations than polar-orbiting satellites, allowing for continuous monitoring of vegetation changes. The Himawari-8 AHI sensor captured seasonal vegetation changes in Central Japan with greater frequency and accuracy.
Typhoon Kammuri brought heavy rains to the Philippines, with surface rainfall accumulations exceeding 500 mm (~20 inches) over the central Philippine Sea. The storm also caused significant flooding and landslides, resulting in up to 17 fatalities.
Researchers discovered measurable changes in pupillary parameters following asymptomatic high-acceleration head impacts. The study suggests that nonconcussive head impacts may affect intrinsic brain reflex pathways and reflect biological injuries, paving the way for a potential inexpensive and rapid method of determining brain injury.
The most serious threat to the potato industry in the US is Potato Virus Y (PVY), which causes a 70-80% yield loss and necrotic reactions. New strains like PVY N-Wi and NTN have become dominant, making it challenging for diagnostic labs to detect them.
A new study suggests that climate change played a role in the collapse of the Neo-Assyrian Empire by exacerbating agricultural productivity declines. The research used high-resolution paleoclimate records from northern Iraq to show that a megadrought may have encouraged invading armies and led to political unrest.
Researchers found that a shallow frozen ground layer present in winter months can lead to greater ground failure and damage after earthquakes. The study on two historical earthquakes in Kazakhstan shows that the presence of this layer can generate more severe ground fracturing during earthquakes in the winter.
The study assesses the performance of dengue forecasting models across 8 seasons in Peru and Puerto Rico, revealing improved accuracy late in the season. The results provide a framework for refining future epidemic forecasting models, improving predictive skill over time.
A team of scientists has developed new ways to forecast dengue infections by combining disease and climate data. The project aimed to predict maximum weekly cases, the week of peak cases, and total season cases, but models still struggle to accurately predict epidemics.
A new study reveals that urbanization shifts the seasonal cue for spring plant growth, with cities in cold climates producing leaves and flowers earlier and those in warm climates delaying it. The research found that other factors such as pollution and changes in humidity also influence plants' seasonal patterns.