Advances in Climate Change Research最新文献

{"title":"Human influence on the duration of extreme temperature events in Asia's hotspot regions","authors":"Zi-Meng Wang,&nbsp;Hong-Yun Ma,&nbsp;Wei Li,&nbsp;Hai-Shan Chen","doi":"10.1016/j.accre.2024.03.005","DOIUrl":"10.1016/j.accre.2024.03.005","url":null,"abstract":"<div><p>Observations and models indicate that human activities exert a considerable impact on the frequency and intensity of extreme temperature events, which are associated with global warming. However, changes in the duration of extreme temperature events and their association with human influence have not been considered in most studies. Thus, the possible relationship between the observed changes in the warm and cold spell duration (WSDI and CSDI) in hotspot regions during 1960–2014 and human influence was investigated based on the NCEP/NCAR reanalysis version 1 and Coupled Model Inter-comparison Project Phase 6 (CMIP6) data. Constraint projection based on these attribution results was also performed. The optimal fingerprinting technique was used to compare observed changes in WSDI and CSDI to simulated changes averaged across eight CMIP6 models. Results show that anthropogenic (ANT) forcing contributed to the observed increase in WSDI in the three hotspot regions (West Asia, South Asia and Southeast Asia), with the majority of the changes being attributed to greenhouse gas forcing. However, a generally weak ANT signal can be observed in the decreasing trend of CSDI and can be detected in South and Southeast Asia. The influence of aerosol forcing remains undetected in either WSDI or CSDI, which differs from the results for frequency and intensity of extreme temperatures. The attribution results revealed that the constrained projection of WSDI is lower than the raw projection for 2015–2100 in West Asia and Southeast Asia. However, no differences in future CSDI changes are found in Southeast Asia between the constrained and raw projections.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 2","pages":"Pages 312-326"},"PeriodicalIF":7.4,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927824000467/pdfft?md5=53ac7dcec6c1412fecf43e5e06840d27&pid=1-s2.0-S1674927824000467-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140276222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of climate damage in China based on integrated assessment framework","authors":"Jie Liu ,&nbsp;Xiang-Zhen Shi ,&nbsp;Li Yang ,&nbsp;Chang-Yi Liu ,&nbsp;Jin-Cheng Wang ,&nbsp;Rui-Min Zhu ,&nbsp;Xue-Li Shi ,&nbsp;Qiu-Feng Liu","doi":"10.1016/j.accre.2024.01.012","DOIUrl":"10.1016/j.accre.2024.01.012","url":null,"abstract":"<div><p>Developing a localized and consistent model framework for climate loss and damage assessment is crucial for the policy-making of climate change mitigation and adaptation. This study introduces a comprehensive, multidisciplinary Integrated Assessment Model (IAM) framework for evaluating climate damage in China, utilizing BCC-SESM climate model and FUND sectoral climate damage model under the SSP2-RCPs scenario. Employing a bottom-up approach, the research estimates climate damage across eight major sectors, recalibrates sectoral climate damage functions and parameters for China, and elucidates distinctions among direct climate loss, market climate loss, and aggregate climate loss. The findings reveal that the total climate damage function for China follows a quadratic pattern in response to temperature rise. By 2050, the estimated climate damage is projected to be 5.4%, 5.7%, and 8.2% of GDP under RCP2.6, RCP4.5, and RCP8.5, respectively. Additionally, both direct and market climate losses are projected to remain below 2% of GDP by 2050, while the aggregate climate loss could reach as high as 8.2%, which is predominantly attributed to non-market sectors. From a sectoral perspective, under the RCP8.5 scenario, human health damage constitutes the largest share (61.9%) of the total climate loss by 2050, followed by sea-level rise damage (18.6%). This study sheds lights on the adaptation policy that should attach importance to the non-market sectors, particularly focusing on human health and sea-level rise.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 124-133"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927824000248/pdfft?md5=d6063964e1e7457767e16c51c14025bb&pid=1-s2.0-S1674927824000248-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139814792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response of runoff and its components to climate change in the Manas River of the Tian Shan Mountains","authors":"Ze-Long Yang ,&nbsp;Peng Bai","doi":"10.1016/j.accre.2024.01.005","DOIUrl":"10.1016/j.accre.2024.01.005","url":null,"abstract":"&lt;div&gt;&lt;p&gt;A warming–wetting climate trend has led to increased runoff in most watersheds in the Tian Shan Mountains over the past few decades. However, it remains unclear how runoff components, that is, rainfall runoff (&lt;em&gt;R&lt;/em&gt;&lt;sub&gt;rain&lt;/sub&gt;), snowmelt runoff (&lt;em&gt;R&lt;/em&gt;&lt;sub&gt;snow&lt;/sub&gt;), and glacier meltwater (&lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt;), responded to historical climate change and how they will evolve under future climate change scenarios. Here, we used a modified Hydrologiska Byråns Vattenbalansavdelning (HBV) model and a detrending method to quantify the impact of precipitation and temperature changes on runoff components in the largest river (Manas River) on the northern slope of the Tian Shan Mountains from 1982 to 2015. A multivariate calibration strategy, including snow cover, glacier area, and runoff was implemented to constrain model parameters associated with runoff components. The downscaled outputs of 12 general circulation models (GCMs) from the Sixth Coupled Model Intercomparison Project (CMIP6) were also used to force the modified HBV model to project the response of runoff and its components to future (2016–2100) climate change under three common socio-economic pathways (SSP126, SSP245, and SSP585). The results indicate that &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;rain&lt;/sub&gt; dominates mean annual runoff with a proportion of 42%, followed by &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;snow&lt;/sub&gt; (37%) and &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt; (21%). In terms of inter-annual variation, &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;rain&lt;/sub&gt; and &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;snow&lt;/sub&gt; show increasing trends (0.93 (&lt;em&gt;p&lt;/em&gt; &lt; 0.05) and 0.31 (&lt;em&gt;p&lt;/em&gt; &gt; 0.05) mm per year), while &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt; exhibits an insignificant (&lt;em&gt;p&lt;/em&gt; &gt; 0.05) decreasing trend (−0.12 mm per year), leading to an increasing trend in total runoff (1.12 mm per year, &lt;em&gt;p&lt;/em&gt; &gt; 0.05). The attribution analysis indicates that changes in precipitation and temperature contribute 8.16 and 10.37 mm, respectively, to the increase in runoff at the mean annual scale. Climate wetting (increased precipitation) increases &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;rain&lt;/sub&gt; (5.03 mm) and &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;snow&lt;/sub&gt; (3.19 mm) but has a limited effect on &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt; (−0.06 mm), while warming increases &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;rain&lt;/sub&gt; (10.69 mm) and &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt; (5.79 mm) but decreases &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;snow&lt;/sub&gt; (−6.12 mm). The negative effect of glacier shrinkage on &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt; has outweighed the positive effect of warming on &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt;, resulting in the tipping point (peak water) for &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt; having passed. Runoff projections indicate that future decreases in &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;glacier&lt;/sub&gt; and &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;snow&lt;/sub&gt; could be offset by increases in &lt;em&gt;R&lt;/em&gt;&lt;sub&gt;rain&lt;/sub&gt; due to increased precipitation projections, reducing the risk of shortages of available water resources. However, management authorities still need to develop adequate adaptation strategies to cope with the continuing decline ","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 62-74"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927824000054/pdfft?md5=e7773346f3c15b58437a908f857f58c2&pid=1-s2.0-S1674927824000054-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139633199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Warming intensified the effects of nitrogen addition on N2O emissions from alpine meadow in the northern Qinghai‒Tibet Plateau","authors":"Ming-Jie Li ,&nbsp;Yi-Qing Ge ,&nbsp;Hasbagan Ganjurjav ,&nbsp;Guo-Zheng Hu ,&nbsp;Hong-Bao Wu ,&nbsp;Jun Yan ,&nbsp;Shi-Cheng He ,&nbsp;Qing-Zhu Gao","doi":"10.1016/j.accre.2024.01.007","DOIUrl":"https://doi.org/10.1016/j.accre.2024.01.007","url":null,"abstract":"<div><p>Warming and nitrogen (N) addition may impact soil nitrous oxide (N₂O) emissions, but the relationship between plant community composition and soil microbial activities remains unclear. For a two-year field study in the Qinghai‒Tibet Plateau, open-top chambers were used to quantify the effects of warming, N-addition, and their interactions on N₂O emissions. We found that the N-addition greatly increased N₂O emissions by 77.4% in 2018 when compared to the control group. In contrast, warming showed little effect on N₂O emissions but did increase the activity of enzymes associated with soil nitrification and denitrification. A combined effect of warming and N-addition of resulted in 208.6% (2018) and 90.8% (2019) increase in N₂O emissions, respectively, compared to the individual treatments of warming or N-addition. Global warming in alpine meadows is causally linked to increased legume biomass which is further intensified with the N-addition. Intensified legume biomass (<em>p</em> &lt; 0.05), soil moisture (<em>p</em> &lt; 0.001) and enzyme activity (<em>p</em> &lt; 0.001) had a positive effect on N₂O emissions, while diminished microbial carbon/nitrogen (MBC/MBN) (<em>p</em> &lt; 0.05) correlated with reduced N₂O emissions. Final results indicated that N-addition has a positive effect on N₂O emissions, and the addition of warming further intensifies this effect. The increased dominance of legumes and microbial N content contributes to this effect. These outcomes suggest that warming and atmospheric N deposition can stimulate N₂O emissions of alpine meadows in the future.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 101-112"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927824000170/pdfft?md5=122e772aa4a06c84ace5dd418aed63b2&pid=1-s2.0-S1674927824000170-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140160426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Persistent greening against drying in northeast Asian semiarid grasslands: Asymmetrical responses of direct and legacy effects to intensified drought","authors":"Yu-Tong Ma ,&nbsp;Hai-Shan Chen ,&nbsp;Yao-Ming Song ,&nbsp;Bo-Tao Zhou ,&nbsp;Shan-Lei Sun ,&nbsp;Xin-Guan Du ,&nbsp;Yue Sun","doi":"10.1016/j.accre.2024.01.013","DOIUrl":"10.1016/j.accre.2024.01.013","url":null,"abstract":"<div><p>Despite experiencing a decadal shift towards drought conditions at the end of the 20th century, semiarid grasslands in northeast Asia (NEA) exhibited an evident greening trend from 1982 to 2020. However, the mechanism behind this phenomenon remains unclear. Hence, we analysed the interdecadal changes in vegetation response to drought on the basis of the standardised precipitation evapotranspiration index (SPEI) and Global Inventory Modelling and Mapping Studies LAI4g datasets, with an emphasis on the differences between direct and legacy effects (as measured by resilience), to explore the mechanism of persistent grassland greening. Results revealed that during the post-drought shift period (2000–2020), the sudden decrease in the water content of the intermediate soil layer triggered an intensified vegetation response to drought. Specifically, although direct effects and resilience were amplified, they exhibited asymmetric changes. Resilience was stronger than direct effects, and this difference increased with increasing drought (drought recovery) levels. These combined effects may account for persistent greening against intensified drying in the semiarid grasslands in NEA. Given the projected exacerbation of future droughts, this study holds notable importance for comprehending the long-term change dynamics of dryland ecosystems.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 9-20"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S167492782400025X/pdfft?md5=8918f490fbfebe89b7dbb52dee06127a&pid=1-s2.0-S167492782400025X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139872690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extraordinary hot extreme in summer 2022 over the Yangtze River basin modulated by the La Niña condition under global warming","authors":"Zhen Liao,&nbsp;Yu-Feng Yuan,&nbsp;Yang Chen,&nbsp;Pan-Mao Zhai","doi":"10.1016/j.accre.2023.12.006","DOIUrl":"10.1016/j.accre.2023.12.006","url":null,"abstract":"<div><p>A widespread and prolonged hot extreme hit the Yangtze River basin in summer 2022, with 300 sites established new temperature records and nearly 96% stations endured more than 40 hot days. From the perspective of the combination effect of the global warming and La Niña condition, potential mechanisms of the hot extreme were investigated. Such a record-breaking hot extreme was caused by an extremely strong and westward-shifted western Pacific subtropical high (WPSH). The global warming effect contributed primarily to the abnormal hot days in the Yangtze River basin, coupled with the modulation of the La Niña condition. The sea surface temperature anomaly pattern under La Niña condition favored more convection activities over the western Pacific, encouraging an enhanced and westward-extended WPSH. In addition, an observation-based attribution analysis indicates that anthropogenic warming may increase the probability of such extensively persistent hot extreme by 1.8 times.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 21-30"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927823001600/pdfft?md5=a92e84553bcb7f4be13cd66a987db031&pid=1-s2.0-S1674927823001600-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139393915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of a concrete thermal pile in cooling the warming permafrost under climate change","authors":"Yun-Hu Shang ,&nbsp;Fu-Jun Niu ,&nbsp;Guo-Yu Li ,&nbsp;Jian-Hong Fang ,&nbsp;Ze-Yong Gao","doi":"10.1016/j.accre.2023.09.002","DOIUrl":"10.1016/j.accre.2023.09.002","url":null,"abstract":"<div><p>Permafrost degradation caused by climate warming is posing a serious threat to the stability of cast-in-place pile foundations in warm permafrost regions. Ambient cold energy can be effectively utilized by two-phase closed thermosyphons (TPCTs) to cool the permafrost. Therefore, we installed TPCTs in a cast-in-place pile foundation to create a unique structure called a thermal pile, which effectively utilizes the TPCTs to regulate ground temperature. And we conducted a case study and numerical simulation to exhibit the cooling performance, and optimize the structure of the thermal pile. The purpose of this study is to promote the application of thermal piles in unstable permafrost regions. Based on the findings, the thermal pile operated for approximately 53% of the entire year and effectively reduced the deep ground temperature at a rate of at least −0.1 °C per year. Additionally, it successfully raised the permafrost table that is 0.35 m shallower than the natural ground level. These characteristics prove highly beneficial in mitigating the adverse effects of permafrost degradation and enhancing infrastructure safety. Expanding the length of the condenser section and the diameter of the TPCT in a suitable manner can effectively enhance the cooling capability of the thermal pile and ensure the long-term mechanical stability of the pile foundation even under climate warming.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 170-183"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927823001120/pdfft?md5=017e517f4eb9a45990323009371c157d&pid=1-s2.0-S1674927823001120-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135387589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of daily precipitation series and the observational characteristics of extreme precipitation in Tianjin, China during 1888–2022","authors":"Peng Si ,&nbsp;Qing-Xiang Li ,&nbsp;Xiao-Yang Chen ,&nbsp;Min Wang ,&nbsp;Chuan-Jun Luo","doi":"10.1016/j.accre.2024.02.002","DOIUrl":"10.1016/j.accre.2024.02.002","url":null,"abstract":"<div><p>Given the difficulties in rescuing and ensuring the quality of long-term climate data, current studies on century-scale climate change are usually limited to annual and monthly data, resulting in the poor detection of extreme climate events and their changes before 1950. In this study, we reconstructed a daily precipitation series for Tianjin from 15 September 1887 to 31 December 2022 on the basis of the most comprehensive daily precipitation records collected from the Tianjin Meteorological Archive, China, and in reference to the precipitation analysis results based on the datasets developed by the Climatic Research Unit Time-Series version 4.06, Global Precipitation Climatology Centre and University of Delaware along with the application of various homogenisation methods for climate series. Our approach provides a complete and reliable century-long daily precipitation series for the study of regional or local extreme weather and climate events. The reconstructed daily dataset reveals that the annual precipitation amount and R95 intensity in Tianjin during 1888–2022 lack significant trends and have values of 0.74 ± 6.99 and −1.84 ± 3.22 mm per decade, respectively. On the annual and seasonal scales, the precipitation amount and R95 intensity, particularly those in autumn, have increased since the latter half of the 20th century relative to those in 1888–1950. However, the increase in precipitation amount and R95 intensity is relatively limited compared with that in atmospheric water vapour content due to surface warming, indicating the highly sensitive response of extreme precipitation events to warming. In addition, the estimates for the return periods of 5, 10, 20, 50 and 100 years covering 1888–2022, 1888–1950 and 1951–2022 depict that the intensity of heavy rain and above magnitude was highest in 1888–1950 and decreased in 1951–2022.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 52-61"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927824000273/pdfft?md5=9b0e76d4a7f9822774bf4b2da8bdb1e9&pid=1-s2.0-S1674927824000273-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139825301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial distribution of supra-permafrost groundwater in the Qinghai‒Tibet Engineering Corridor using inversion models","authors":"Yu Gao ,&nbsp;Ming-Tang Chai ,&nbsp;Wei Ma ,&nbsp;Yu-Tao Gao","doi":"10.1016/j.accre.2023.12.003","DOIUrl":"10.1016/j.accre.2023.12.003","url":null,"abstract":"<div><p>Supra-permafrost groundwater (SPG) is a key factor that causes damage to highways and railways in the Qinghai‒Tibet Engineering Corridor (QTEC). It is difficult to monitor SPG in the field due to their complex formation mechanisms and movement characteristics. Traditional single-site field monitoring studies limit the spatial and temporal precision of SPG spatial distribution. To determine the moisture content of shallow soils and the SPG distribution along the QTEC, this work employed the temperature vegetation dryness index and remote sensing models for groundwater table distribution models. The accuracies of the models were validated using measurements obtained from different sites in the corridor. In the permafrost zones of the QTEC, 72%, 22% and 6% of the SPG were located at depths of 0.5–1, &lt;0.5 and &gt;1 m, respectively. Meanwhile, 79.4% of the area along the Qinghai‒Tibet Highway (QTH) (Xidatan‒Tanggula) section contained SPG. In these sections with SPG, 37.9% have an SPG table at depths of 0.5–0.8 m. This study preliminarily explored the SPG distribution in the QTEC with a 30 m resolution. The findings can help improve the spatial scale of SPG research, provide a basis for the analysis of the hydrothermal mechanisms, and serve as a guide in the assessment of operational risks and road structure designs.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 31-41"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927823001570/pdfft?md5=f23b807de498d1f02ea0bb1902b1322a&pid=1-s2.0-S1674927823001570-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139022157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the thermal environment of urban land surfaces in Yakutsk, a city located in a region of continuous permafrost","authors":"Xiang-Long Li ,&nbsp;Ze Zhang ,&nbsp;Jin-Xin Lu ,&nbsp;Anatoli Brouchkov ,&nbsp;Qing-Kai Yan ,&nbsp;Qi-Hao Yu ,&nbsp;Sheng-Rong Zhang ,&nbsp;Andrey Melnikov","doi":"10.1016/j.accre.2024.01.002","DOIUrl":"10.1016/j.accre.2024.01.002","url":null,"abstract":"<div><p>Rapid urbanization has led to changes in the urban land surface thermal environment. However, there are still much unknown about the urban land surface thermal conditions in permafrost regions. Permafrost is a unique geological environment, changes in the urban land surface thermal environment may trigger geological disasters caused by permafrost degradation. This study utilized remote sensing data and geographic detectors to identify the dynamic changes in land surface temperature (LST) and land use/land cover (LU/LC) in Yakutsk, as well as the potential factors contributing to LST variations. Between 1992 and 2020, the built-up area in Yakutsk increased by 36%, and the annual average LST in Yakutsk has risen by 6.67 °C, accompanied by an expansion of high-temperature areas. Despite ongoing greening efforts, rapid urbanization poses a threat to these green spaces. Changes in the normalized difference built-up index (NDBI) and land use transfer (LDT) were identified as the primary drivers of urban LST changes. By integrating geographic detector technology and artificial neural network models, we optimized the selection of input factors in the prediction model and used it to explore the future changes in LST in Yakutsk. The average LST in Yakutsk is expected to reach 23.4 °C and 25.1 °C in 2030 and 2040, respectively, with a further increase in high-temperature areas. This study provides a reference for ecological, hydrological, and geological assessments of cities in permafrost regions.</p></div>","PeriodicalId":48628,"journal":{"name":"Advances in Climate Change Research","volume":"15 1","pages":"Pages 113-123"},"PeriodicalIF":7.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674927824000029/pdfft?md5=a20b9096cd74edb5440564c4d4eac8c2&pid=1-s2.0-S1674927824000029-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139457168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}