A global dataset analysis revealed exponential increases in gross primary productivity (GPP) and ecosystem respiration (ER) with mean annual temperature (MAT), with maximum leaf area index (LAI) as a key factor determining carbon fluxes across all biomes. The model explained 53% of GPP variations and 48% of ER variations, highlighting ...
Dr. Roger M. Samelson has been selected as a Fellow of The Oceanography Society for his groundbreaking work on chaotic exchange in meandering currents and large-scale ocean circulation. His research also addresses coastal upwelling and marine meteorology, showcasing outstanding skill in theory, numerical modeling, and observations.
A team of researchers found that methane emissions from natural gas in Pennsylvania are significantly lower than those from coal, but not negligible. The study used a ratio of methane to ethane to determine the sources of emissions and estimated that natural gas production has about half the carbon footprint of coal mining.
Ex-Tropical Cyclone Ann is moving west into the Gulf of Carpentaria, causing warnings for strong winds and flooding potential. The Australian Bureau of Meteorology issued a Strong Wind Warning and Flood Watch for coastal catchments in Queensland.
Tropical Cyclone Ann is moving over the Great Barrier Reef in the Coral Sea, bringing strong winds and heavy rainfall to northeast Queensland. The Australian Bureau of Meteorology has issued severe weather warnings for areas including Peninsula, North Tropical Coast and Tablelands, Herbert and Lower Burdekin Forecast Districts.
A new study published in Agricultural and Forest Meteorology successfully predicts Australian wheat yield two months before the crop matures using a combination of climate and satellite data. The researchers achieved an accuracy rate of approximately 75% in their predictions, outperforming traditional statistical methods.
Tropical Cyclone Ann is a category 1 storm with sustained winds of 40 knots (46 mph) near its center. The cyclone is expected to make landfall on the east coast of the Cape York Peninsula, Queensland on May 15 as a category 1 system.
Tropical Cyclone Lili forms in the Southern Indian Ocean, with NASA-NOAA's Suomi NPP satellite capturing its formation. The storm has maximum sustained winds near 40 knots (46 mph/74 kph) and is expected to strengthen slightly before weakening towards Timor.
A new forecasting system provides 72-hour forecasts of fine particulates in New Delhi, helping officials and residents plan to reduce exposure to unhealthy air. The system uses measurements, computer modeling, and statistical techniques, improving accuracy but requiring refinement for precise pollutant levels.
Researchers confirm a long-hypothesized limit for weather prediction, first proposed in the 1960s, which is approximately two weeks on average. They used state-of-the-art models to test this limit and found that reliable forecasts are now possible nine to 10 days out in mid-latitudes.
The North Atlantic warming hole has a significant impact on the North Atlantic jet stream, leading to changes in atmospheric circulation and storm tracks. The cooling pattern caused by the warming hole is predicted to become greater and more apparent as the century progresses.
Researchers propose a unified approach to optimize radar polarimetry data for precise weather forecasting. This combines observation-based retrievals with model-based analysis to improve quantitative precipitation estimation, warnings, and forecasts.
Researchers Inanc Senocak and Cheng-Nian Xiao uncover fluid instabilities in the Prandtl model for katabatic slope flows, a complex phenomenon crucial for reliable weather predictions. Their findings suggest that dynamic stability cannot be determined by a single dimensionless parameter alone.
NASA-NOAA's Suomi NPP satellite captured a visible image of Tropical Cyclone Wallace as it continued to weaken off the coast of Western Australia. Wind shear has pushed the bulk of the system's clouds southeast, tearing the storm apart.
Researchers analyzed data from Fresno and Bakersfield before, during, and after the California drought to understand its impact on ozone air quality. They found that severe drought conditions led to a 20% decrease in ozone production due to reduced isoprene concentrations and altered VOCs.
Tropical Cyclone Wallace was sheared apart by northwesterly winds, causing its clouds to spread far inland. The storm's rotation was weakened due to wind shear, a phenomenon where winds at different altitudes push against the rotating cylinder of winds.
Tropical Cyclone Wallace has a more circular appearance, with an eye starting to emerge according to Australian Bureau of Meteorology. The system is forecast to strengthen over the next day or two before weakening below tropical cyclone intensity.
Tropical Cyclone 23S has developed north of the Kimberley coast and generated warnings in Western Australia. The cyclone is expected to move west-southwest while intensifying over the next four days, with a slight risk that it could approach the west Pilbara coast.
Brazil is expected to increase its soybean production by up to 39% to satisfy China's increased demand, which could lead to dramatic deforestation in the Amazon rainforest. Global meat consumption must be reduced to sustainably cope with this problem, and ecological consequential costs need to be included in food costs.
Tropical Cyclone Veronica weakened due to strong vertical wind shear, causing its center to clear of clouds. The storm rapidly deteriorated and is expected to dissipate by the end of March 26.
Tropical Cyclone Veronica is moving slowly west southwest along the Australian coast, with its eye just off the coast. The storm is expected to weaken below tropical cyclone intensity early Tuesday, bringing heavy rain and hazardous road conditions.
Severe Tropical Cyclone Veronica is a Category 4 storm with sustained winds of 175 km/h, moving slowly southwards towards the Pilbara coast. The Australian Bureau of Meteorology has issued warnings for the region, predicting a severe coastal impact late Saturday or Sunday.
A new study from Stockholm University finds that climate changes are affecting weather forecasting accuracy, particularly with predicting summer rain volumes. Meanwhile, temperature and air pressure forecasts are expected to become more accurate.
Tropical Cyclone Trevor filled up Australia's Gulf of Carpentaria, as revealed in a NASA image. The cyclone brought severe weather conditions, including destructive winds and very heavy rainfall.
Tropical Cyclone Veronica, a Category 4 system, is moving slowly towards the Pilbara coast of Western Australia. The cyclone is expected to make landfall on March 24, near Whim Creek, with severe coastal impact likely.
Tropical Cyclone Trevor has re-emerged in the Gulf of Carpentaria after crossing Cape York Peninsula. The cyclone is expected to intensify further and make landfall near Borroloola as a category 4 severe tropical cyclone.
A major international collaboration aims to improve weather forecasting across Africa, with a focus on reducing the impact of severe weather events. The project seeks to build confidence between forecasters and users by developing new computer models and satellite methods.
Tropical Cyclone Trevor is slowly moving just south of Lockhart River, with maximum sustained winds near the center reaching 130 kilometers per hour. The cyclone is expected to weaken as it crosses the northern Peninsula but re-intensify rapidly once it enters the Gulf of Carpentaria.
Tropical Cyclone Veronica developed off Western Australia's northern coast, with NASA's Aqua satellite capturing its visible image on March 20, 2019. The system intensified over the next two days, adopting a more southerly track towards the Pilbara coast.
Tropical Cyclone Trevor has triggered warnings in Queensland, Australia, with NASA's Terra satellite analysis suggesting strong storm conditions. The storm is expected to reach hurricane-force and make landfall near the Queensland/Northern Territories border, prompting forecasts of heavy rainfall.
Tropical Cyclone Idai is moving in a westerly direction after making landfall in Mozambique, affecting provinces of Zambézia, Sofala, Manica, Tete, and Inhambane with moderate to strong rains and severe thunderstorms.
NASA's Aqua satellite provides critical infrared data on Tropical Cyclone Idai before its landfall, indicating cloud top temperatures as low as -63 degrees Fahrenheit. This suggests extremely strong storms with the potential to create severe thunderstorms and heavy rain in Mozambique.
Young, regrowing forests in middle and high latitudes and areas with reforestation programs take up large amounts of CO2. This age effect accounts for about 25% of forests' CO2 uptake.
Tropical Cyclone Idai is approaching the coast of Mozambique with cloud top temperatures as cold as minus 70 degrees Fahrenheit, indicating powerful thunderstorms. NASA's Terra satellite captured infrared data showing Idai's eye is about 20 nautical miles wide, with maximum sustained winds near 103.6 mph.
Scientists use confocal Raman spectroscopy to study silicate glass corrosion in real time, discovering that silica molecules form aggregates near the surface, forming an opal-like layer. This layer does not provide perfect protection against water, allowing the corrosion process to continue.
Researchers found seasonal variations in raindrop size distribution in East China, with summer having larger raindrops and higher mean rain rates. These findings have implications for microwave communication, radar, and satellite remote sensing, as well as numerical weather prediction models.
Scientists discovered over 1,000 buried wetland sites worldwide, revealing a record of wetland presence and peat burial. These findings suggest that peat burial can slow down the transfer of carbon from the atmosphere to land, potentially offsetting climate warming.
A new study reveals that peatlands have been a significant carbon sink over the past 130,000 years, storing carbon in their deposits and potentially slowing down climate change. The research, published in PNAS, fills a key knowledge gap about the global extent of peatlands and their role in the carbon cycle.
Fires increased during phases of lush steppe oak forest growth in relatively humid and warm climates. This contradicts the assumption that dry brushwood was decisive for early fires, suggesting fire risk is linked to plant biomass.
A recent study by KIT and University of Edinburgh finds that previous measures to reduce greenhouse gases through land use change are insufficient to meet the Paris Agreement's climate goals. The study suggests that countries must find quick, yet realistic solutions to sustainably change human land use to mitigate climate change.
Researchers from Canada and Germany used a supercomputer to simulate climate trends in Quebec and Bavaria from 1950 to 2100, providing insights into severe flooding dynamics under changing climate conditions. The study's results showed good agreement with historical climate data, confirming the predictive power of the simulations.
Tropical Cyclone Oma continued to intensify in the Southern Pacific Ocean, posing a significant threat to Vanuatu. NASA's Suomi NPP satellite captured an image of the storm, showing a large area of thunderstorms wrapping into the center.
Tropical Cyclone Oma has been located northwest of the island of Vanuatu in the South Pacific Ocean, prompting heavy rainfall and flash flooding warnings for several provinces. The satellite imagery revealed a large area of powerful thunderstorms wrapping into the low-level center.
NASA-NOAA's Suomi NPP satellite captured a visible image of Tropical Cyclone Oma, showing a circular center with thunderstorms wrapping into it. Gale force winds are expected to affect provinces in Vanuatu, with heavy rainfalls and flash flooding forecasted.
Tropical Cyclone Oma formed northwest of Vanuatu, with maximum sustained winds near 45 knots (52 mph/83 kph). The cyclone is forecast to strengthen slightly over the next two days before weakening, bringing damaging gale force winds and heavy rainfall.
A new definition for the Northeast Indian Monsoon (NEM) season has been established using surface temperature analyses, identifying the average onset and demise dates as November 6 and March 13. This definition provides a more objective and reliable approach to monitoring the monsoon season, which is critical for millions of people in ...
Researchers successfully captured chorus wave packets and transient auroral flashes simultaneously, revealing details of wave-particle interaction regions. The observation confirms geomagnetic north-south asymmetry and suggests rapid precipitation of energetic electrons into the atmosphere.
Researchers analyzed dinosaur footprints in Morocco to understand how long-necked dinosaurs moved forward. The results showed that the animals could switch between orienting their forefeet forward or sideways as needed, with smaller individuals able to rotate them more easily.
Researchers found that extratropical eruptions produce strong hemispheric cooling in proportion to their sulfur release, contrary to the assumed weaker impact. This study sheds light on the importance of injection height and helps quantify volcanic eruptions' past climate variability effects.
Simulating clouds over the Tibetan Plateau helps researchers understand the role of convective systems in disastrous Chinese weather events. The study reveals biased models with excessive water vapor lifting, leading to more high-level ice clouds and less middle-level cumulus cloud.
Research suggests that smaller snowstorms will decrease in number, but the most powerful nor'easters will remain frequent and crippling. The study's findings have significant implications for transportation, economy, and infrastructure along the Eastern Seaboard.
Scientists from Leipzig Institute for Meteorology and TROPOS conduct a field experiment to understand the relationship between aerosol particles, clouds, and precipitation. They observe the atmosphere at Punta Arenas, a region with minimal pollution, to gather data on cloud formation and life cycle.
Researchers have demonstrated feasible global quantum communication between high-orbiting satellites and a ground station, exchanging single photons over 20,000km. This milestone experiment proves secure quantum communications on a global scale using the Global Navigation Satellite System.
A recent study by Chinese researchers reveals that horizontal heat flux in the mixed layer is crucial for extreme heat events. The analysis of a 2015 heatwave found that this factor, combined with sensible heat flux, drove high temperatures.
Tropical Cyclone Owen strengthened as it moved east through the Gulf of Carpentaria towards a landfall in western Queensland. The storm was categorized as a Category 3 system with maximum sustained winds near 120 kilometers per hour.
Tropical Cyclone Owen has intensified over the Gulf of Carpentaria, with NASA's GPM satellite detecting extremely heavy rainfall rates up to 97 mm/h in the Arafura Sea. The storm is expected to continue strengthening and potentially reach Category 4 intensity by Friday.
Cameron R. Homeyer, a University of Oklahoma meteorologist, will lead a $30 million NASA-funded project to investigate the impact of summer storms on the stratosphere's chemistry. The five-year project aims to understand how these storms affect ozone depletion and the potential for increased water in the stratosphere.
Tropical Cyclone Owen's center was surrounded by intense storms with cloud top temperatures as cold as minus 80 degrees Fahrenheit. The cyclone is expected to move slowly and may reach category 3 intensity, bringing destructive winds along the Northern Territory coast.
A new algorithm developed by Yale Ph.D. student TC Chakraborty creates a more comprehensive and consistent estimate of urban heat islands worldwide. The Global Surface UHI Explorer map uses urban agglomerations instead of administrative city boundaries, providing surface UHI intensity estimates for over 10,000 urban clusters.
Dynamical downscaling methods aim to improve fine-scale climate information by integrating regional climate models with global climate models. Recent research reviewed these methods, highlighting their merits and limitations in constraining model biases through bias correction techniques.