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Projecting future snow changes at kilometer scale for adaptation using machine learning and a CMIP6 multi-model ensemble.
Sci Total Environ
January 2025
Universidad de Santiago de Chile, Santiago, Chile.
Assessing future snow cover changes is challenging because the high spatial resolution required is typically unavailable from climate models. This study, therefore, proposes an alternative approach to estimating snow changes by developing a super-spatial-resolution downscaling model of snow depth (SD) for Japan using a convolutional neural network (CNN)-based method, and by downscaling an ensemble of models from the Coupled Model Intercomparison Project Phase 6 (CMIP6) dataset. After assessing the coherence of the observed reference SD dataset with independent observations, we leveraged it to train the CNN downscaling model; following its evaluation, we applied the trained model to CMIP6 climate simulations.
View Article and Find Full Text PDFIntroduction: Intestinal microorganisms play an important role in the health of both humans and animals, with their composition being influenced by changes in the host's environment.
Methods: We evaluated the longitudinal changes in the fecal microbial community of rats at different altitudes across various time points. Rats were airlifted to high altitude (3,650 m) and acclimatized for 42 days (HAC), before being by airlifted back to low altitude (500 m) and de-acclimatized for 28 days (HADA); meanwhile, the control group included rats living at low altitude (500 m; LA).
[Spatial distribution pattern and intraspecific association of dominant species var. in Qinling Mountains, China].
Ying Yong Sheng Tai Xue Bao
August 2022
School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, China.
To explore the spatial distribution and intraspecific correlation of var. , a domi-nant tree species in a 25 hm plot of warm temperate deciduous broadleaved forest in Qinling Mountains, the pair-correlation function () was used to study the spatial pattern and intraspecific association. The results showed that the diameter class structure of .
View Article and Find Full Text PDFEffect of acetazolamide on obstructive sleep apnoea in highlanders: protocol for a randomised, placebo-controlled, double-blinded crossover trial.
BMJ Open
March 2022
Sleep Medicine Center, Department of Respiratory and Critical Care Medicine, Translational Neuroscience Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
Introduction: Obstructive sleep apnoea (OSA) is a highly prevalent disease that causing systemic hypertension. Furthermore, altitude-dependent hypobaric hypoxic condition and Tibetan ethnicity have been associated with systemic hypertension independent of OSA, therefore patients with OSA living at high altitude might be at profound risk to develop systemic hypertension. Acetazolamide has been shown to decrease blood pressure, improve arterial oxygenation and prevent high altitude periodic breathing in healthy volunteers ascending to high altitude and decrease blood pressure in patients with systemic hypertension at low altitude.
View Article and Find Full Text PDFModerate Altitude Residence Reduces Male Colorectal and Female Breast Cancer Mortality More Than Incidence: Therapeutic Implications?
Cancers (Basel)
September 2021
Department of Sport Science, University of Innsbruck, A-6020 Innsbruck, Austria.
Background: Living at moderate altitude may be associated with health benefits, including reduced mortality from male colorectal and female breast cancer. We aimed to determine altitude-dependent incidence and mortality rates of those cancers and put them in the context of altitude-associated lifestyle differences.
Methods: Incidence cases and deaths of male colorectal cancer ( = 17,712 and 7462) and female breast cancer ( = 33,803 and 9147) from altitude categories between 250 to about 2000 m were extracted from official Austrian registries across 10 years (2008-2017).
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