Proposal of a new method for drought analysis

IF 2.3 4区环境科学与生态学 Q3 WATER RESOURCES

Journal Of Hydrology And Hydromechanics Pub Date : 2023-02-04 DOI:10.2478/johh-2022-0030

O. Bonacci, Duje Bonacci, T. roje-Bonacci, A. Vrsalović

{"title":"Proposal of a new method for drought analysis","authors":"O. Bonacci, Duje Bonacci, T. roje-Bonacci, A. Vrsalović","doi":"10.2478/johh-2022-0030","DOIUrl":null,"url":null,"abstract":"Abstract Below-average precipitation and above-average air temperature are important factors in the occurrence and intensity of drought. In the context of global climate change, air temperature increase, as a key climatological parameter, has to be considered when calculating the drought index. We introduce a new method of drought analysis, relying on standardized values of precipitation and mean air temperatures for a certain period. The standardized value is calculated by subtracting the average value for each period from each measured value and dividing the obtained value by the standard deviation of the sample. Next, the New Drought Index (NDI) is calculated by subtracting the standardized temperature value from the standardized precipitation value. NDI values were determined for the monthly and annual precipitation time series and mean monthly and annual air temperatures measured at the stations Split-Marjan and Zagreb-Grič between 1948 and 2020. The NDI indicates that the risk of drought has intensified significantly in recent decades, which may be related to the effect of global warming.","PeriodicalId":50183,"journal":{"name":"Journal Of Hydrology And Hydromechanics","volume":"71 1","pages":"100 - 110"},"PeriodicalIF":2.3000,"publicationDate":"2023-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal Of Hydrology And Hydromechanics","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.2478/johh-2022-0030","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"WATER RESOURCES","Score":null,"Total":0}

引用次数: 5

Abstract

Abstract Below-average precipitation and above-average air temperature are important factors in the occurrence and intensity of drought. In the context of global climate change, air temperature increase, as a key climatological parameter, has to be considered when calculating the drought index. We introduce a new method of drought analysis, relying on standardized values of precipitation and mean air temperatures for a certain period. The standardized value is calculated by subtracting the average value for each period from each measured value and dividing the obtained value by the standard deviation of the sample. Next, the New Drought Index (NDI) is calculated by subtracting the standardized temperature value from the standardized precipitation value. NDI values were determined for the monthly and annual precipitation time series and mean monthly and annual air temperatures measured at the stations Split-Marjan and Zagreb-Grič between 1948 and 2020. The NDI indicates that the risk of drought has intensified significantly in recent decades, which may be related to the effect of global warming.

查看原文本刊更多论文

一种新的干旱分析方法的提出

低于平均水平的降水量和高于平均水平的气温是影响干旱发生和强度的重要因素。在全球气候变化的背景下，在计算干旱指数时，必须考虑气温升高作为一个关键的气候参数。我们介绍了一种新的干旱分析方法，该方法依赖于某一时期的降水量和平均气温的标准化值。通过从每个测量值中减去每个周期的平均值并将获得的值除以样品的标准偏差来计算标准化值。接下来，通过从标准化降水值中减去标准化温度值来计算新干旱指数（NDI）。NDI值是针对1948年至2020年间斯普利特马尔扬站和萨格勒布-格里奇站测得的月度和年度降水时间序列以及月度和年度平均气温确定的。NDI表明，近几十年来，干旱风险显著加剧，这可能与全球变暖的影响有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal Of Hydrology And Hydromechanics 环境科学-水资源

CiteScore

4.20

自引率

5.30%

发文量

审稿时长

>12 weeks

期刊介绍： JOURNAL OF HYDROLOGY AND HYDROMECHANICS is an international open access journal for the basic disciplines of water sciences. The scope of hydrology is limited to biohydrology, catchment hydrology and vadose zone hydrology, primarily of temperate zone. The hydromechanics covers theoretical, experimental and computational hydraulics and fluid mechanics in various fields, two- and multiphase flows, including non-Newtonian flow, and new frontiers in hydraulics. The journal is published quarterly in English. The types of contribution include: research and review articles, short communications and technical notes. The articles have been thoroughly peer reviewed by international specialists and promoted to researchers working in the same field.