Journal of Water and Climate Change最新文献_第10页

Food and health security impact of climate change in Bangladesh: a review 气候变化对孟加拉国粮食和健康安全的影响:审查

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-28 DOI: 10.2166/wcc.2023.131

Monira Parvin Moon

引用次数: 0

Climate stress impacts on the reservoir inflows: a decision-scaling and IHACRES modeling approach in South Korean basins 气候压力对水库流入的影响:韩国盆地的决策尺度和ihaacres模型方法

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-25 DOI: 10.2166/wcc.2023.156

Taehyeon Kim, B. Kang

{"title":"Climate stress impacts on the reservoir inflows: a decision-scaling and IHACRES modeling approach in South Korean basins","authors":"Taehyeon Kim, B. Kang","doi":"10.2166/wcc.2023.156","DOIUrl":"https://doi.org/10.2166/wcc.2023.156","url":null,"abstract":"\u0000 This study employed the Decision-Scaling (DS) approach and the IHACRES (Identification of unit Hydrographs And Component flows from Rainfall) long-term runoff model to investigate the impact of composite changes in rainfall and temperature on dam inflows at Chungju dam, Yongdam dam, Hapcheon dam, and Seomjingang dam basins. By analyzing flow regimes, rainfall scenarios, and temperature scenarios, the study revealed crucial insights into dam inflow and its response to climate stressors. The findings demonstrated that the rate of inflow increase in the study basins exceeded the rate of rainfall increase, indicating the significance of basin storage effects in contributing to runoff generation. The analysis of rainfall changes by quantile highlighted the dominant influence of the upper-high (UH) rainfall quantile, which led to higher flood inflow compared to other quantiles. Furthermore, scenarios with different rainfall patterns were compared, showcasing the predominant impact of UH quartile rainfall on the total inflow variation. The study also analyzed the runoff ratio, finding that changes in precipitation proportionally affected the runoff ratio. Overall, these insights contribute to understanding the sensitivity of dams to changes in rainfall and temperature, facilitating the development of strategies for sustainable water supply and flood management in dam systems.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44963808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the influences of climate change on drought in a small data-scarce river catchment 研究气候变化对一个数据稀缺的小河流流域干旱的影响

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-25 DOI: 10.2166/wcc.2023.291

F. Wambura

{"title":"Investigating the influences of climate change on drought in a small data-scarce river catchment","authors":"F. Wambura","doi":"10.2166/wcc.2023.291","DOIUrl":"https://doi.org/10.2166/wcc.2023.291","url":null,"abstract":"\u0000 \u0000 This study focuses on the influences of climate change on drought characteristics in the small, data-scarce Ndembera River catchment in Tanzania, using the Climatic Research Unit (CRU) datasets and six regional climate models (RCMs) of the CORDEX-Africa framework. The RCM simulations were validated against the CRU data, and their optimistic (RCP 2.6) and worst-case (RCP 8.5) scenarios were used in estimating ensemble simulations using the random forest regression. The ensemble simulations were used to compute standardized precipitation evapotranspiration indices, which characterized drought for the near-future, mid-future, and far-future. Finally, patterns and trends of changes in temperature and precipitation were compared to those in drought characteristics. The findings revealed substantial uncertainty in RCMs, although their ensembles fairly reproduced the historical climate in the catchment. Under the optimistic scenario, a slight decrease in precipitation and a small increase in maximum temperature are projected. Consequently, drought intensity is projected to rise just slightly but remain moderate throughout this century. These changes are expected to be more pronounced during the near-future than the far-future. Under the worst-case scenario, the projected changes are expected to be more pronounced, especially during the end of the century. These sorts of insights are vital for enhancing adaptations to climate change in catchments.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46966295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance evaluation of multi-satellite rainfall products in the Gidabo catchment, Rift Valley Basin, Ethiopia 埃塞俄比亚裂谷盆地Gidabo流域多卫星降雨产品性能评价

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-25 DOI: 10.2166/wcc.2023.097

Kehase Neway Gebretsadkan, Melsew Berihun Tamrie, Haile Belay Desta

{"title":"Performance evaluation of multi-satellite rainfall products in the Gidabo catchment, Rift Valley Basin, Ethiopia","authors":"Kehase Neway Gebretsadkan, Melsew Berihun Tamrie, Haile Belay Desta","doi":"10.2166/wcc.2023.097","DOIUrl":"https://doi.org/10.2166/wcc.2023.097","url":null,"abstract":"\u0000 \u0000 Satellite rainfall products are good options to overcome shorter records, record challenges, and inconsistencies with rain gauges. However, satellites' rainfall retrieval algorithms are region- and time scale-specific; hence, its key concern is the selection of appropriate satellite products. Accordingly, this study evaluates the performance of five high-resolution satellites' rainfall qualitatively, using multiple categorical metrics, and quantitatively by hybrid techniques at multiple metrics for daily and monthly scales. The result showed that Climate Prediction Center (CPC) Morphing Algorithm (CMORPH.CPC) performed better by scoring: qualitatively; Critical Success Index (CSI = 0.856), Probability of Detection (POD = 0.911), Frequency Bias Index (FBI = 0.974), and quantitatively; correlation coefficient (CC = 0.375), Root Mean Square Error (RMSE ≈ 575), and Volumetric Critical Success Index (VCSI = 0.958) at a daily scale. At a monthly scale, Climate Hazards Group Infrared Precipitation with Stations (CHIRPS.v2) performed better by scoring CSI = 0.983, POD = 1 and FBI = 0.975 qualitatively, and quantitatively, CC = 0.836 with strong VCSI = 0.981 and better RMSE (≈125) than daily. The daily rainfall of these satellites needs value-improving techniques before using them in place of Gidabo's rain gauge rainfall, while the rainfall of CHIRPS.v2 at a monthly scale can be an alternative source of rainfall data. Finally, it ensured that for the Gidabo catchment and elsewhere with similar features, the performance of satellite rainfall products was more effective at a monthly scale than at a daily scale.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41861316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multimodal climate change prediction in a monsoon climate 季风气候下的多模式气候变化预测

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-25 DOI: 10.2166/wcc.2023.393

S. Mohan, Akash Sinha

{"title":"Multimodal climate change prediction in a monsoon climate","authors":"S. Mohan, Akash Sinha","doi":"10.2166/wcc.2023.393","DOIUrl":"https://doi.org/10.2166/wcc.2023.393","url":null,"abstract":"\u0000 The uncertainty in the climate projection arising from various climate models is very common, and averaging such results poses a risk of underestimation or sometimes overestimation of impact in magnitude and frequency. Further, the performance of various climate models in monsoon degrades drastically due to the skewed nature. Under these circumstances, the performance of the climate model in the monsoon and non-monsoon periods is critical for accurate assessment. A multimodal approach has been used in the present work to quantify the uncertainty involved in the climate model using reliability ensemble averaging (REA). Based on AR6 of IPCC, the ensemble of 26 GCMs was used to evaluate the model performance and possible change in seasonal precipitation in four cities with distinct climate conditions, namely, Coimbatore, Rajkot, Udaipur, and Siliguri. The results show that non-monsoon and monsoon rainfall are expected to increase in all the regions. Most of the models perform poorly in simulating monsoon climate, especially in the monsoon period and are highly inconsistent spatially. The study also finds that the model performance is largely linked to the ratio of natural variability and mean.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47966776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating the effects of different pollution reduction scenarios on the total phosphorus concentration of a mountainous river basin in southwest China using SWAT model: a case study of the Donghe River in Baoshan, Yunnan 基于SWAT模型评价不同污染减排情景对西南山区河流流域总磷浓度的影响——以云南宝山东河为例

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-22 DOI: 10.2166/wcc.2023.104

Yongjian Wang, Chang-jun Zhu, Chunming Hu, Wenlong Hao

{"title":"Evaluating the effects of different pollution reduction scenarios on the total phosphorus concentration of a mountainous river basin in southwest China using SWAT model: a case study of the Donghe River in Baoshan, Yunnan","authors":"Yongjian Wang, Chang-jun Zhu, Chunming Hu, Wenlong Hao","doi":"10.2166/wcc.2023.104","DOIUrl":"https://doi.org/10.2166/wcc.2023.104","url":null,"abstract":"\u0000 \u0000 Water quality has become a significant concern in many river basins in China due to both point and non-point source pollution. The SWAT model assessed pollution reduction scenarios and their effects on Donghe River basin water quality in southwest China. The calibrated model evaluated existing point and non-point emissions. Three schemes reduced point sources by 30, 60, and 90% and non-point sources by 25, 50, and 75%, respectively. Simulations analyzed annual and monthly total phosphorus (TP) concentrations under the scenarios. Results showed that the scenarios effectively improved water quality, meeting Class IV TP standards annually. However, TP exceeded standards in dry months (January–April, December) under all scenarios. A certain degree of negative correlation (R = −0.52, P = 0.11) between TP and rainfall suggests rainfall that influences TP. Comprehensive measures are needed to achieve standards year-round. In summary, the study found that reducing emissions improved Donghe water quality overall but more work is required to meet standards during dry periods. Rainfall correlates with and may affect TP. The work emphasizes implementing comprehensive approaches for year-round water quality improvements in the basin.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48908973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated spatial and temporal variability of the system water use efficiency in a lower Baro River watershed, Ethiopia 埃塞俄比亚巴罗河下游流域系统用水效率的综合时空变化

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-18 DOI: 10.2166/wcc.2023.171

Fiseha Befikadu, Amba Shetty, F. Fufa

{"title":"Integrated spatial and temporal variability of the system water use efficiency in a lower Baro River watershed, Ethiopia","authors":"Fiseha Befikadu, Amba Shetty, F. Fufa","doi":"10.2166/wcc.2023.171","DOIUrl":"https://doi.org/10.2166/wcc.2023.171","url":null,"abstract":"\u0000 The Baro Akobo River, Gambella, is a representative of lower Baro River watersheds with lost soils. Under eight landscapes, the geospatial and temporal variability of water use efficiency (WUE) and system WUE (sWUE) was investigated. In contrast with WUE, sWUE takes runoff into account, better capturing the combined effects of soil management, climate change, and land cover change on agricultural irrigation systems. The total area of the lower Baro River is 20,325. This study used GIS, RS, EasyFit, and CROPWAT8.0 software. It allows automatic fitting distributions to the data, selects the best mathematical tool, and quantifies the yields and WUE/sWUE. sWUE is a more helpful index than WUE to describe differences in water holding capacity and yield across agricultural landscapes. sWUE varies in streamflow from its correlation with runoff, with a coefficient of variation (CV) of 71% across the watershed. Evapotranspiration (ET) had a CV of 70%. Temporally, sWUE will decrease by 10% by 2050, but its spatial variability will reach 25%. These methods improve soil infiltration and water storage, which reduce runoff and standing water lost through ET and raise sWUE.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48894096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of 12 reference evapotranspiration methods for semi-arid regions (Spain) 半干旱区12种蒸散发参考方法的比较分析(西班牙)

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-17 DOI: 10.2166/wcc.2023.448

Joel Hernández-Bedolla, A. Solera, S. T. Sánchez-Quispe, Constantino Domínguez-Sánchez

{"title":"Comparative analysis of 12 reference evapotranspiration methods for semi-arid regions (Spain)","authors":"Joel Hernández-Bedolla, A. Solera, S. T. Sánchez-Quispe, Constantino Domínguez-Sánchez","doi":"10.2166/wcc.2023.448","DOIUrl":"https://doi.org/10.2166/wcc.2023.448","url":null,"abstract":"\u0000 \u0000 Evapotranspiration is one of the most significant variables used to determine runoff, hydrological balances, and climate change studies. In semi-arid conditions, there is a need to evaluate various alternatives to establish reference evapotranspiration (ETo), given that climate change scenarios sometimes do not provide information on diverse climate variables. Several alternatives for obtaining evapotranspiration are analyzed in this study and compared with the Penman-Monteith method, modified by FAO (PMFAO56). Due to limited daily climate information, it is necessary to consider different options for determining reference evapotranspiration. In the present work, methods based on temperature (Hargreaves, Hargreaves 1, Hargreaves 2, and Baier-Robertson) and radiation (Caprio, Irmark 1, Irmark 2, Irmark 3, Makkink, Priestley-Taylor and Hasen) were investigated. The best performance for the semi-arid Jucar River Basin was determined by Hargreaves methods. Regional calibration of Hargreaves methods, Hargreaves 1 and Hargreaves 2, were performed for each sub-basin.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48167326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bridging the data gap: using remote sensing and open-access data for assessing sustainable groundwater use in Kumasi, Ghana 弥合数据差距:利用遥感和开放获取数据评估加纳库马西地下水的可持续利用

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-17 DOI: 10.2166/wcc.2023.261

Estela Fernandes Potter, I. Monney, M. Rutten

{"title":"Bridging the data gap: using remote sensing and open-access data for assessing sustainable groundwater use in Kumasi, Ghana","authors":"Estela Fernandes Potter, I. Monney, M. Rutten","doi":"10.2166/wcc.2023.261","DOIUrl":"https://doi.org/10.2166/wcc.2023.261","url":null,"abstract":"\u0000 \u0000 Groundwater use has significantly increased in the rapidly urbanising city of Kumasi, Ghana. But there is a lack of understanding of whether the groundwater system can sustain the growing demand in the future amidst climate change and rapid urbanisation. Using remote sensing datasets and a water balance approach, this study estimated the groundwater recharge and assessed how urbanisation has affected its groundwater sustainability. Sustainability is investigated by comparing multi-annual groundwater withdrawals to long-term average annual replenishment. Results show that while groundwater recharge has decreased by 80% from 1986 to 2020, mainly due to substantial (63%) loss of permeable land, groundwater consumption has seen a six-fold increase. Groundwater consumption in 2020 exceeded the long-term average groundwater recharge by 2.2 Mm3, suggesting that the current groundwater use trends are unsustainable for future groundwater availability. Under a ‘business-as-usual’ scenario, a four-fold increase in groundwater consumption is predicted by 2050 while climate change and land cover changes may reduce groundwater recharge by 10 and 55%, respectively. Practical measures such as promoting artificial groundwater replenishment approaches, adopting low-impact development and instituting demand management measures must be implemented in the Metropolis. This should be informed by further studies to ascertain the exact condition of the groundwater.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48369278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of Bayesian and frequentist quantile regressions in studying the trend of discharge changes in several hydrometric stations of the Gorganroud basin in Iran 贝叶斯和频率分位数回归在研究伊朗Gorganroud盆地几个水文站流量变化趋势中的比较

IF 2.8 4区环境科学与生态学

Journal of Water and Climate Change Pub Date : 2023-08-16 DOI: 10.2166/wcc.2023.305

K. Ghorbani, M. Salarijazi, Sedigheh Bararkhanpour, Laleh Rezaei Ghaleh

{"title":"Comparison of Bayesian and frequentist quantile regressions in studying the trend of discharge changes in several hydrometric stations of the Gorganroud basin in Iran","authors":"K. Ghorbani, M. Salarijazi, Sedigheh Bararkhanpour, Laleh Rezaei Ghaleh","doi":"10.2166/wcc.2023.305","DOIUrl":"https://doi.org/10.2166/wcc.2023.305","url":null,"abstract":"\u0000 This research utilized Bayesian and quantile regression techniques to analyze trends in discharge levels across various seasons for three stations in the Gorganroud basin of northern Iran. The study spanned a period of 50 years (1966–2016). Results indicate a decrease in high discharge rates during springtime for the Arazkouseh and Galikesh stations, with a steep slope of −0.31 m3/s per year for Arazkouseh and −0.19 and −0.17 for Galikesh. Furthermore, Tamar station experienced an increase in very high discharge during summer, with a slope of 0.12 m3/s per year. However, low discharge rates remained relatively unchanged. Arazkouseh station showed a higher rate of decreasing discharge levels and this trend was most prominent during spring. Additionally, the Bayesian quantile regression model proved to be more accurate and reliable than the frequency-oriented quantile regression model. These findings suggest that quantile regression models are a valuable tool for predicting and managing extreme high and low discharge changes, ultimately reducing the risk of flood and drought damage.","PeriodicalId":49150,"journal":{"name":"Journal of Water and Climate Change","volume":"1 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67915352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0