Article
Remote Sensing
Yi Xu, Huili Gong, Beibei Chen, Qingquan Zhang, ZhenZhen Li
Summary: This study analyzed the seasonal and long-term trend changes of groundwater storage in the North China Plain using satellite products and models. The results showed a long-term decline trend in groundwater storage, with seasonal variations influenced by precipitation. The South-to-North Water Diversion Middle Route Project also had a certain impact on groundwater storage.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2021)
Article
Meteorology & Atmospheric Sciences
Chaoqun Zhang, Yongxian Su, Liyang Liu, Jianping Wu, Guangqing Huang, Xueyan Li, Chongyuan Bi, Wenting Yan, Raffaele Lafortezza
Summary: This study quantified the biophysical effects of seasonal and long-term dynamics in forests on understory microclimate. It found that high latitudes forests show the strongest negative seasonal variations, while low latitudes forests exhibit positive seasonal variations in soil surface temperature. Long-term variations showed an increase in soil surface temperature at all latitudes, but a slight decrease in air temperature at high latitudes. Overall, changes in sensible and latent heat fluxes induced by forest dynamics are the main drivers of changes in forest microclimate effects. This study also proposed an indicator, Delta T-su, as a possible benchmark for evaluating the total biophysical effects of forests on temperatures.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2023)
Article
Environmental Sciences
Christopher C. M. Baker, Amanda J. Barker, Thomas A. Douglas, Stacey J. Doherty, Robyn A. Barbato
Summary: Understanding microbial responses to permafrost thaw is crucial for predicting the impact of climate change on soil processes. This study demonstrates that bacterial and fungal communities differ in composition across depths and months, with surface communities showing the most variability. However, community variation is not explained by trace metal concentrations, soil nutrient content, pH, or soil condition, except in relation to depth. These findings emphasize the importance of collecting samples at multiple time points throughout the year to capture temporal variation and suggest that data from the annual freeze-thaw cycle might help predict microbial responses to permafrost thaw.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Yuezhen Xu, Mingde Shen, Zhiwei Zhou, Wei Ma, Guoyu Li, Dun Chen
Summary: This study investigates the settlement deformation characteristics of three types of roadbed structures during 16 years of operation. The results show that crushed-rock embankment structures have a significant impact on controlling settlement. The shady-sunny slope effect and temperature field change also influence the settlement of the roadbed.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Oceanography
Yunxiao Li, Hong Yang, Jiajia Dang, Xufeng Yang, Liang Xue, Longjun Zhang
Summary: This study reports the seasonal variation and controls of sea surface pH in Jiaozhou Bay, indicating that temperature appears to be the dominant factor of pH seasonal variation, while the mass balance model suggests that the biological effect is the most important in this coastal area.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Ecology
Alena S. Gsell, Justyna Wolinska, Katrin Preuss, Sven Teurlincx, Deniz Ozkundakci, Sabine Hilt, Ellen van Donk, Bas W. Ibelings, Rita Adrian
Summary: Parasites, specifically chytrids, were found to be prevalent in the pelagic plankton community of the lake studied. Chytrid infections occurred throughout the year with the highest prevalence in spring. The prevalence of infections was influenced by factors such as phytoplankton biomass, temperature, and phosphorus concentrations.
FRESHWATER BIOLOGY
(2022)
Article
Environmental Sciences
Feng Ye, Satoshi Kameyama
Summary: The study found that the majority of monitoring sites in Japan are experiencing increasing freshwater temperatures, which may have adverse impacts on aquatic ecosystems. However, some sites showed decreasing trends in freshwater temperature. The temperature change rate suggests that the warming of freshwater is not solely due to atmospheric warming.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Civil
Jamin Park, Oh-Sung Kwon, Luigi Di Sarno
Summary: Seismic hazards in permafrost regions have attracted growing interest due to the differences in frozen soil's dynamic properties compared to its unfrozen state, requiring consideration of the impact of soil temperature variation on seismic hazards. Comprehensive site response analysis shows that soil temperature variation significantly influences seismic hazards in the permafrost region.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2021)
Article
Environmental Sciences
Mahdieh Danesh Yazdi, Yaguang Wei, Qian Di, Weeberb J. Requia, Liuhua Shi, Matthew Benjamin Sabath, Francesca Dominici, Joel Schwartz
Summary: The study found that air pollutants, such as PM2.5 and O-3, increased the rate of hospital admissions for cardiovascular and respiratory diseases among the elderly. Conversely, higher cold-season temperatures decreased the rate of admissions for these conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geography, Physical
Rowan Romeyn, Alfred Hanssen, Andreas Kohler
Summary: The small-aperture Spitsbergen seismic array (SPITS) located in the high-Arctic Svalbard archipelago is an ideal laboratory for studying cryoseisms. Through long-term observations and borehole ground temperature measurements, a catalog of over 100,000 events was extracted, with one subclass related to underground coal-mining activities and the other dominated by frost quakes caused by thermal-contraction cracking of ice wedges and crack-filling vein ice.
Article
Environmental Studies
Stepan Prokopievich Varlamov, Yuri Borisovich Skachkov, Pavel Nikolaevich Skryabin
Summary: This study presents the results of long-term temperature monitoring at the Yakutsk and Zeleny Lug stations, and analyzes the long-term data from meteorological stations, revealing a significant trend of increasing mean annual air temperature in the north of Russia. The study shows that during climate warming, the dynamics of ground temperature at the layer of zero amplitude indicate the thermal stability of permafrost.
Article
Environmental Sciences
Zijing Liu, Qi Liang, Hongsen Liao, Wenhui Yang, Chan Lu
Summary: The duration of recovery from COVID-19 among patients is associated with ambient air pollution, temperature, and diurnal temperature range (DTR) exposure. Short-term exposure to CO, PM2.5, NO2, and CO is positively associated with long recovery duration, while short-term exposure to O3 is negatively associated. Long-term exposure to air pollution does not show a significant association. Increased temperature increases the risk of long recovery duration, while DTR exposure decreases the risk. Male and younger patients are more susceptible to the effects of air pollution, while female and older patients are more affected by temperature and DTR exposure.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Philippe Fortier, Nathan L. Young, Jean-Michel Lemieux, Michelle A. Walvoord, Richard Fortier
Summary: This study characterizes the cryohydrogeology of a permafrost mound in the discontinuous permafrost zone near Umiujaq, Canada, through analysis of a dataset covering more than two decades of monitoring. The data indicate that variable saturation and advective heat transport contribute to the expansion and contraction of the talik, and there are two distinct thermo-hydrologic settings on the mound feature. The results highlight the important role of hydrogeological characterization and long-term data sets in understanding the effects of groundwater flow on seasonal frost and permafrost dynamics.
WATER RESOURCES RESEARCH
(2023)
Article
Biodiversity Conservation
Haifeng Yu, Xiaohong Shi, Shihuan Wang, Shengnan Zhao, Biao Sun, Yu Liu, Zhaoxia Yang
Summary: Using Generalized Additive Models, this study examined the trophic status changes in Lake Wuliangsuhai over a ten-year period. The results showed a significant decrease in eutrophication, with higher trophic levels observed in winter and during the ice-covered period. Spatial differences were also observed in trophic levels.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Fernando Sola, Angela Vallejos
Summary: Saltwater extraction in coastal aquifers creates a negative hydraulic barrier that prevents marine intrusion and results in freshening of the landward side. In the Andarax delta aquifer in SE Spain, two instances of saltwater extraction were studied and found to cause cation exchange between the aquifer substratum and groundwater. The process is reversible and short saltwater pumping-stopping cycles lead to rapid inversions in the chemical reaction. Additionally, an excess of calcium ion was observed, attributed to the overall marine intrusion in the area during the Holocene transgression.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)