Article
Environmental Sciences
Bayoumy Mohamed, Alexander Barth, Aida Alvera-Azcarate
Summary: This study examines the long-term spatiotemporal trend of marine heatwaves and marine cold spells in the southern North Sea and finds that the warming of sea surface temperature is associated with an increase in heatwave frequency and a decrease in cold spell frequency. In the last two decades, the frequency of heatwaves has been increasing, with notable peaks in 2014, 2020, and 2007. The study highlights the importance of the East Atlantic Pattern and the Atlantic Multidecadal Oscillation in the formation of heatwaves in the southern North Sea.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Erik T. Smith, Scott C. Sheridan
Summary: This study utilized historical and future simulated temperature data from five climate models to investigate the impact of climate change on cold air outbreaks (CAOs) in the future. While some regions may see persistent or increased CAOs through 2040, all models predict the disappearance of CAOs by 2054. The models accurately simulated historical CAOs in regions like North America, but struggled with simulation in the North Atlantic and North Pacific, indicating a need for further understanding of complex processes leading to these errors.
Article
Geosciences, Multidisciplinary
C. Seethala, Paquita Zuidema, James Edson, Michael Brunke, Gao Chen, Xiang-Yu Li, David Painemal, Claire Robinson, Taylor Shingler, Michael Shook, Armin Sorooshian, Lee Thornhill, Florian Tornow, Hailong Wang, Xubin Zeng, Luke Ziemba
Summary: The warm Gulf Stream sea surface temperatures have a strong impact on the evolution of winter clouds, but there are some biases in the boundary layer heights and surface fluxes in the reanalysis data. Despite these issues, the reanalysis data can still support higher-resolution cloud process modeling studies.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Sandro Dahlke, Amelie Solbes, Marion Maturilli
Summary: This study investigates the climatology and decadal trends of marine cold air outbreaks (MCAOs) in the Fram Strait region using ERA5 reanalysis data. The results show that MCAOs are most frequent in December-March, with a significant increase in March. The increase in March can be attributed to changes in synoptic circulation patterns and a possible feedback between retreating Barents Sea sea ice and enhanced cyclonic activity. Observational evidence is provided for the diabatic cooling and drying during the MCAO preconditioning phase.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Meteorology & Atmospheric Sciences
Susana Barbosa, Manuel G. Scotto
Summary: This study analyzes extreme summer temperatures on the Iberia Peninsula using ERA5-Land reanalysis data and a mixture model. The results show significant differences in temperature between the periods from 1981 to 2000 and from 2000 to 2019, with an increase in the mean temperature in the eastern region of the peninsula.
WEATHER AND CLIMATE EXTREMES
(2022)
Article
Meteorology & Atmospheric Sciences
Annick Terpstra, Ian A. Renfrew, Denis E. Sergeev
Summary: The study shows that cold-air outbreak events are often accompanied by severe mesoscale weather features, and CAO events in regions such as the Labrador Sea and the Greenland-Norwegian Seas exhibit similar evolution and characteristics.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Linda M. Keller, Kathryn J. Maloney, Matthew A. Lazzara, David E. Mikolajczyk, Stefano Di Battista
Summary: This study examines the characteristics and duration of extreme cold events at the Amundsen-Scott South Pole station. Significant trends and correlations were found, but there were also cases where the trends were not statistically significant. Additionally, climate patterns that could potentially lead to extreme cold events were identified.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Erik T. Smith, Scott C. Sheridan
Summary: This study examined the relationship between atmospheric and oceanic teleconnection indices and CAOs in the NH, finding that while some relationships were no longer significant, new significant relationships, particularly with the TNH pattern, have emerged. Additionally, it was observed that upstream teleconnections generally have a stronger relationship with CAOs than downstream teleconnections.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Multidisciplinary Sciences
Saahil Shenoy, Dimitry Gorinevsky, Kevin E. Trenberth, Steven Chu
Summary: By analyzing temperature and rainfall data, we found that there is an increasing trend in extreme climate events in the continental United States over the past 41 years. The risk of high-temperature events has increased 2.1-fold, with a 2.6-fold increase from July to October. On the other hand, the risk of high rainfall extremes has increased 1.4-fold in December and January but decreased by 22% during the spring and summer months.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Xiangyong Lei, Wanling Xu, Shiting Chen, Tingting Yu, Zengyun Hu, Meng Zhang, Lizhi Jiang, Ruijuan Bao, Xiaojun Guan, Miaomiao Ma, Jianhui Wei, Aixia Feng, Lu Gao
Summary: This study evaluates the performance of ERA5 in simulating extreme precipitation events in China using precipitation indices. The results show that ERA5 performs well in simulating annual total precipitation and intensity indices, but has limitations in simulating frequency and duration indices. The study highlights the need for ERA5 to improve its simulation of trend changes in extreme precipitation events.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Wanling Xu, Xiangyong Lei, Shiting Chen, Tingting Yu, Zengyun Hu, Meng Zhang, Lizhi Jiang, Ruijuan Bao, Xiaojun Guan, Miaomiao Ma, Jianhui Wei, Lu Gao, Aixia Feng
Summary: The study validates the ERA5 reanalysis data in capturing extreme temperature events in China using a new DISO criterion. ERA5 performs well in reproducing original daily temperatures and capturing extreme temperature intensity and frequency. It performs best in summer and worst in winter. However, ERA5 fails to capture the trend of diurnal temperature range (DTR) and struggles to accurately recreate extreme temperature events in the Tibetan Plateau. The elevation difference contributes to the main bias of reanalysis temperatures.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
Jouni Raisanen
Summary: The study showed that atmospheric circulation had a minor impact on annual mean temperature trends in most areas, but had a significant effect on seasonal and monthly temperature trends. Removing the effect of circulation changes resulted in residual trends with a smoother annual cycle, which aligned better with model trends from CMIP5.
Article
Meteorology & Atmospheric Sciences
David A. Peterson, Michael D. Fromm, Richard H. D. McRae, James R. Campbell, Edward J. Hyer, Ghassan Taha, Christopher P. Camacho, George P. Kablick, Chris C. Schmidt, Matthew T. DeLand
Summary: The Black Summer fire season of 2019-2020 in southeastern Australia led to a large-scale outbreak of fire-induced and smoke-infused thunderstorms known as pyrocumulonimbus, with over half of the pyroCbs injecting smoke particles into the stratosphere. These smoke plumes persisted for an unusually long time and continued into nighttime, impacting the climate and environment significantly.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Kai Lochbihler, Geert Lenderink, A. Pier Siebesma
Summary: Observations and models suggest that local rainfall extremes are increasing at a higher rate than expected with warming, indicating a potential super-CC behavior. Cold pool dynamics play an important role in enhancing precipitation rates, but their response to climatic warming remains unclear and is a subject for future research.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2021)
Article
Meteorology & Atmospheric Sciences
N. Freychet, S. F. B. Tett, A. A. Abatan, A. Schurer, Z. Feng
Summary: The study found that the frequency of cold events in South-East China is influenced by multiple factors, with climate models and observations indicating a possible impact of greenhouse gases on these events over the past 60 years, but uncertainties remain in trends. Both observations and models suggest that in the next few decades, the frequency of long-lasting cold events is expected to decrease.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Meteorology & Atmospheric Sciences
Ryan E. Adams, Cameron C. Lee, Erik T. Smith, Scott C. Sheridan
Summary: This research explores the relationship between atmospheric circulation patterns and extreme temperature events (ETEs) in North America, finding that 500-hPa geopotential height (z500) is more strongly associated with ETEs than sea-level pressure (SLP). Spatial variability was observed in the strength of the relationship between different ETE variables and circulation patterns, likely due to local geographical influences. The use of self-organizing maps provides a unique method for assessing potential human health risks related to ETEs and could be useful for downsizing climate model data for future ETE assessments.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Erik T. Smith, Omon Obarein, Scott C. Sheridan, Cameron C. Lee
Summary: This study classified circulation patterns in five regions across North America using self-organized maps, showing that trends in the z500 circulation patterns were generally larger than those in mean sea-level pressure, indicating a stronger influence of geopotential heights on atmospheric conditions.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Erik T. Smith, Scott C. Sheridan
Summary: This study examined the relationship between atmospheric and oceanic teleconnection indices and CAOs in the NH, finding that while some relationships were no longer significant, new significant relationships, particularly with the TNH pattern, have emerged. Additionally, it was observed that upstream teleconnections generally have a stronger relationship with CAOs than downstream teleconnections.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Biophysics
Christopher Elcik, Christopher M. Fuhrmann, Scott C. Sheridan, Andrew E. Mercer, Kathleen Sherman-Morris
Summary: The study looked at the relationship between synoptic weather types and pain in different geographical regions, finding that different regions displayed different patterns of association between weather types and types of pain.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2022)
Article
Environmental Sciences
Will Simmons, Shao Lin, Thomas J. Luben, Scott C. Sheridan, Peter H. Langlois, Gary M. Shaw, Jennita Reefhuis, Paul A. Romitti, Marcia L. Feldkamp, Wendy N. Nembhard, Tania A. Desrosiers, Marilyn L. Browne, Jeanette A. Stingone
Summary: The study suggests that the duration of extreme heat exposure may modify the relationship between PM2.5 and specific congenital heart defects. An increase of 5 μg/m³ in average PM2.5 exposure was significantly associated with perimembranous ventricular septal defects.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Vijendra Ingole, Scott C. Sheridan, Sanjay Juvekar, Hicham Achebak, Paula Moraga
Summary: Summary: In urban Pune, India, both high and low temperatures are associated with a mortality burden, with cold effects being greater than heat effects. Men bear the highest burden in both heat and cold conditions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Douglas E. Pirhalla, Cameron C. Lee, Scott C. Sheridan, Varis Ransibrahmanakul
Summary: Anomalous sea levels along the mid-Atlantic and South Atlantic coasts of the United States are influenced by atmosphere-ocean dynamics and other factors. This study examines sea level variability along the U.S. Atlantic coast using satellite altimeter and coastal tide gauge data, and identifies the relationships between sea level patterns and atmospheric circulation and wind patterns. By incorporating wind and circulation metrics, this research aims to predict future flood events at various scales.
JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
(2022)
Article
Environmental Sciences
Yanqiu Ou, Eleni A. Papadopoulos, Sarah C. Fisher, Marilyn L. Browne, Ziqiang Lin, Aida Soim, Yi Lu, Scott Sheridan, Jennita Reefhuis, Peter H. Langlois, Paul A. Romitti, Erin M. Bell, Marcia L. Feldkamp, Sadia Malik, Shao Lin, Natl Birth Defects Prevent Study
Summary: This study explored whether medications related to thermoregulation modified the associations between maternal exposure to extreme heat events (EHEs) and congenital heart defects (CHDs) in offspring. The findings suggest that while overall there was no significant interaction, medications altering central thermoregulation did significantly modify the association between EHEs and CHDs in the Southwest region of the United States.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Jonathan F. H. Birkel, Tracy E. Twine, Stefan Liess, Larry S. Kalkstein, Scott Sheridan
Summary: Extreme heat is often overlooked as a public health concern in Minnesota. However, recent trends show increased temperatures and humidity, and decreased nighttime cooling in urban areas. Future projections indicate significant increases in the frequency and temperature of extreme heat days, as well as longer consecutive-day episodes of excess heat.
Editorial Material
Biophysics
Scott C. Sheridan
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Omon A. Obarein, Cameron C. Lee, Erik T. Smith, Scott C. Sheridan
Summary: Accurate subseasonal-to-seasonal weather forecasts are crucial, but there are gaps between societal needs and forecasters' abilities, especially at longer lead times. By clustering atmospheric states into categories, noise can be reduced and medium-range forecasts can be improved.
WEATHER AND FORECASTING
(2023)
Article
Environmental Sciences
Dan Yan, Zihan Zhang, Zhipeng Jin, Mengmeng Li, Scott C. Sheridan, Tijian Wang
Summary: China has been facing increasingly serious ozone (O3) pollution in recent years, which poses a great threat to the agricultural ecosystem and economy. This study investigates the surface ozone variability driven by synoptic weather patterns using decadal records of surface ozone concentrations in China from 2014 to 2022, combined with spatial synoptic classification (SSC) and multiple linear regression (MLR) methods. The results demonstrate strong connections between surface O3 levels and SSC synoptic weather patterns, with the dry tropical (DT) weather pattern being the main contributor to high ozone occurrences. The study also highlights the significant impact of meteorological conditions on seasonal ozone trends and estimates the economic loss and agricultural yield reductions caused by ozone exposure in China during the study period.
ATMOSPHERIC POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Osvaldo Fonseca-Rodriguez, Ryan E. Adams, Scott C. Sheridan, Barbara Schumann
Summary: This study used weather classification and climate models to estimate the impact of extreme hot and cold weather on mortality in different regions of Sweden. The results suggest that heat-related deaths will increase in urban areas, while cold-related deaths may decrease in rural areas. Adaptation measures are needed to address the increasing heat-related mortality.
ENVIRONMENTAL RESEARCH
(2023)
Article
Computer Science, Interdisciplinary Applications
Xin Hong, Scott Sheridan, Dong Li
Summary: This paper presents the integration of deep learning techniques with GIS to extract and analyze built environment information. Through data collection using UAVs, deep learning model for greenspace extraction, and mapping spatial distributions of greenspace and sidewalks, this study successfully identifies and analyzes the spatial distribution of built environments at the neighborhood scale.
COMPUTATIONAL URBAN SCIENCE
(2022)
