The China Global Merged Surface Temperature dataset 2.0 reveals 2023 is likely the hottest year on record due to unprecedented monthly highs and El Niño's impact. The dataset, developed by Professor Qingxiang Li's team, provides a comprehensive global surface temperature benchmark.
A recent study uncovered the facts behind the 1931 Yangtze River flood, which affected 25 million lives and claimed over 2 million lives. The research found that tropical El Nino-related sea surface temperature forcing and extratropical wave activities over the Eurasian continent combined to cause the disaster.
Researchers found that BSISO types affect YRV precipitation occurrence frequency and duration, but mechanisms vary across types. High-resolution reanalysis datasets were used to analyze impacts of three BSISO types on summer precipitation.
Agricultural flash droughts are anticipated to become more frequent due to climate shifts, driven by changes in temperature, relative humidity, and soil moisture levels. Hot spots for flash drought development have been identified in Europe, South America, and southern Africa.
A recent study introduces an innovative approach to calculating the entrainment rate of shallow cumulus clouds, promising enhanced reliability and precision. The findings highlight the prominent role of vertical velocity in influencing the rate of entrainment, offering valuable insights into improving cloud models and predictions.
A study found an enhanced temperature seasonality in China during the mid-Holocene, with a nationally averaged enhancement of 2.44°C or 9% for the multimodel mean. The change was closely related to seasonal contrast variation of surface energy fluxes, mainly due to net shortwave radiation.
Researchers find Tibetan Plateau's shape orchestrates airflows and radiation energy transfers, dictating sky temperatures and cloud cover over East Asia. The plateau enhances airflows that generate more clouds over South China, while its thermal influence creates areas of low pressure and surface warming.
The team's study found consistent wet biases in upper troposphere water vapor depiction across six reanalysis datasets, with the most significant bias over the Tibetan Plateau. The findings highlight the need for improved water vapor simulation in reanalysis data to enhance climate modeling and forecasting accuracy.
Research reveals a significant cross-seasonal connection between Arctic sea ice and Eurasian summertime temperature fluctuations. The study found that changes in Arctic sea ice influence atmospheric waves over the North Atlantic–Barents-Kara Sea–Central Asia regions, leading to corresponding changes in temperature fluctuations.
A recent study suggests that El Niño's impact on precipitation in West Antarctica is not significant, contradicting its effect through the Amundsen Sea low pressure system. However, different types of El Niño events have opposing impacts on the Antarctic Peninsula and surrounding seas.
Researchers developed an AI model powered by deep learning algorithms that outperforms traditional dynamic models in predicting central Pacific El Nino events. The study sheds light on the potential of AI to enhance seasonal forecasts, offering significant advancements in climate prediction.
Scientists developed a new diagnostic framework to analyze oceanic mesoscale eddy transport in the Southern Ocean. The study introduces a holistic picture of eddy potential vorticity transport dynamics, providing theoretical support for potential parameterization.
The Fengyun-4A satellite in collaboration with a machine learning model generated a detailed PV resource map for China, providing new insights into the country's solar energy potential. This advancement sets a new standard for solar resource mapping, empowering decision-makers to make informed choices for a sustainable future.
The 'warm Arctic–cold Eurasia' pattern influences winter sea-ice anomalies in the Barents–Kara Sea, with a subseasonal transition from negative to positive ice coverage. This phenomenon is linked to atmospheric and oceanic changes driven by global warming.
Researchers found that humidity plays a crucial role in extreme heat events in China, particularly in eastern regions. The study highlights the need to understand and limit humidity to mitigate regional changes in heat stress.
Researchers identify three distinct teleconnection patterns that precede intense Siberian High events, impacting surface air temperatures in East Asia. The Scandinavian, West Pacific, and Polar-Eurasian patterns trigger varying cold anomalies with distinct timing and persistence.
A study using state-of-the-art climate models found that two-thirds of the selected CMIP6 models showed positive correlations between Asian-Pacific Oscillation (APO) and Southeast China precipitation, consistent with observations. The best-performing model ensemble (BMME) simulated the APO-associated precipitation and atmospheric anoma...
A significant correlation dominates the ENSO–NCCV relationship, suggesting that El Niño restrains the intensity of NCCV and La Niña contributes to its strengthening. The Indian Ocean basin mode is an essential intermediate factor in this modulation mechanism.
Researchers in China have developed a new theoretical framework to understand and predict air pollution, highlighting the complexity of coal combustion and vehicle exhaust interactions. The Air Pollution Complex is a holistic approach that considers multiple emission sources and chemical processes.
A new framework defines super drought as simultaneous extreme droughts at multiple time scales, shedding light on compound dry extremes. A web service has been launched to monitor global super drought events in near-real-time, providing valuable insights for researchers and policymakers.
A new parameterization scheme incorporating sea ice thickness improves wave forecasting accuracy in the Marginal Ice Zone. The model effectively captures directional attenuation and spreading of waves caused by sea ice.
A research team studied the source of hazardous March and April 2023 dust storms in China, finding that Mongolia is the main dust source affecting northern China's weather. The team used advanced models and machine learning techniques to forecast dust events, providing a reference for addressing global dust storm hazards.
Researchers found rising UV radiation levels in the tropics and northern mid-latitudes after 2010, posing risks to human health and the environment. The ozone layer is taking longer than expected to recover from depletion, leading to higher surface UV radiation.
China experienced its warmest year on record in 2022, with extreme heatwaves and droughts affecting the country. The report highlights a dry climate with low precipitation levels, resulting in severe weather events such as flooding and sandstorms.
Researchers analyzed wind field structure of tropical cyclones to understand their size and intensity relationship. Vortexes with larger radius of maximum wind expand more under the same level of intensity increment, highlighting the importance of paying attention to incipient storms with large RMW.
Recent research reveals significant increases in tropical cyclone frequency in the North Atlantic and North Indian Ocean, while decreases are observed in the western Pacific. The study also shows varying trends in intensity across different ocean basins.
Researchers developed a review to improve cloud microphysics modeling, addressing challenges such as turbulence and parameterization. The model aims to enhance short- and long-term weather forecasting and optimize solar energy capture.
An international team has detected aerosols from the Hunga Tonga eruption in the Northern Hemisphere stratospheric westerlies, aiding simulation of volcanic plume processes. This discovery provides key insights into physical properties and evolutionary process of volcanic aerosols in the stratosphere.
The study examines the impact of surface type on Arctic amplification, finding that ice-retreat regions experience the strongest warming and largest seasonal contrast. The seasonal energy transfer mechanism and changes in effective thermal inertia also contribute to the seasonality of AA.
New research reveals a strong correlation between El Niño-Southern Oscillation and cloud-to-ground lightning in China. The study found that ENSO events, particularly La Niña, lead to enhanced cloud-to-ground lightning activity in North China and Northeast China.
A team of scientists has developed an AI model that can accurately predict ocean wave sizes, reducing the need for expensive and time-consuming numerical methods. The ConvLSTM model outperforms existing methods in terms of accuracy and efficiency, paving the way for real-time ocean forecasting.
Researchers found record-low Antarctic sea ice in austral summer 2022 due to stronger positive sea surface temperature anomalies and unprecedented ozone reduction. The anomalies triggered the deepening of an Amundsen Sea Low, leading to sea ice retreat via horizontal wind anomalies.
The study found that heat domes over Western North America contributed 50% of the observed high temperatures in 2021-like heatwaves. The intensities of these extreme heat events are projected to increase by 40-fold by the end of the century, emphasizing the need for climate mitigation and adaptation activities.
Researchers used a coupled model to simulate ocean circulation and temperature during the MMCO, finding that global average temperature was over 3℃ higher than present. Extensive forest coverage played a significant role in climate regulation, with land temperatures particularly high in the Sahara and high northern latitudes.
Researchers found that phosphorus limitation decreases global and Chinese carbon sink strength by 7-16% by 2030s. The positive feedback between net primary productivity and soil decomposition amplifies this impact in China.
Researchers predict heatwaves similar to the 2021 WNA heatwave will occur more frequently due to increased extreme temperatures and shortened return periods. A warmer climate will also lead to a larger area breaking temperature records in the region.
Scientists from Chinese Academy of Sciences have revealed the predictable and unpredictable components of the anomalous WPSH in July 2021. The study suggests that positive precipitation anomalies over the tropical western Pacific driven by La Niña contributed to the northward shift, while atmospheric internal intraseasonal oscillations...
A new study found that urban friction can strengthen the precipitation of landfalling tropical cyclones, leading to increased vulnerability for coastal cities. Urban surface friction and physical mechanisms make a significant contribution to enhancing rainfall produced by TCs.
Recent research reveals that ozone depletion leads to Antarctic upper-stratospheric warming during winter months, with temperatures rising significantly since the 1970s. The study highlights the importance of understanding the coupling between atmospheric chemistry and climate in the southern upper stratosphere.
A recent study found that faster El Niño decays are associated with lower typhoon frequencies in the following summer. Researchers discovered a stronger anticyclonic anomaly over the western North Pacific, driven by tropical Indo-Pacific sea surface temperature anomalies, as a key mechanism behind this phenomenon.
Research found that abnormally weak meridional potential vorticity gradients in the Northern Hemisphere atmosphere facilitated the development of stationary blocking weather patterns, leading to extreme cold weather and snowstorm events in East Asia and North America. The team predicts improved forecasting with more accurate PV modeling.
Heavy rainfall in Northwest India and North China in September 2021 was unexpectedly high, triggering dire consequences. The study found that warmer conditions over continental Eurasia led to an anomalous cyclone in India, transporting abundant water vapor into the region.
Researchers from the Institute of Atmospheric Physics have created a new climatological range-based automatic quality control system for ocean temperature profiles. The system, called CODC-QC, uses 14 distinct quality checks to identify outliers and aims to provide a quality-homogenous database.
A study found that a northward position of North Pacific sea surface temperature anomalies weakens the Arctic stratospheric polar vortex. This weakening can lead to Eurasian cooling and negative surface temperature anomalies.
A team of scientists reviewed the effectiveness of reanalysis data products for studying the West African climate. They found that ERA5 achieved considerable progress in reducing biases and improving representation compared to its predecessor, ERA-interim.
A recent study found that reversed flow over the Tibetan Plateau led to extreme climate events in subtropical Asia in 2022. Strong descending motion on the eastern side of TP caused persistent heat waves, while strong ascending motion on the western side caused excessive rainfall and flooding.
Researchers analyzed relationships between snow cover and depth for three vegetation types in the Northern Hemisphere. Different interactions between land cover and snow processes were found, which climate models struggle to reproduce. This study highlights the need to improve snow parameterization schemes.
Scientists have recorded another year of record-breaking ocean temperatures, indicating a perpetually heating climate. The added heat content has serious consequences, including ocean deoxygenation, altering the exchange of heat, carbon, and oxygen between the ocean and atmosphere.
The Tibetan Plateau's frozen ground is experiencing diverse variations in thawing due to uneven wetting under climate change. The study found that arid regions have become warmer and wetter, while humid regions have become warmer but drier. This has led to a reduction in permafrost area by 28% as substantial wetting in arid areas exert...
Research reveals that Indo-Pacific Ocean warming has increased uncertainty in forecasting South China Sea summer monsoon onset due to the weakening ENSO signal and frequent cold-tongue La Niña events. This challenges ability to predict the onset of the East Asian summer rainy season at subseasonal scales.