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A new propagation-based framework to enhance competency in regional drought monitoring Cover

A new propagation-based framework to enhance competency in regional drought monitoring

Tellus
Volume 73 (2021): Issue 1
By: ,  ,  ,  ,  ,  ,  ,  ,   and    
Open Access
|Jan 2021
Figures & tables

Figures & Tables

Fig. 1.

Flow chart for the framework of the proposed procedure.

Table 2.

BIC of selected probability distributions at a one-month time scale for SPI, SPEI, and SPTI in selected stations.

AstoreBunjiGupisDistributionSPISPEISPTISPISPEISPTISPISPEISPTI3P Weibull−1036.513−700.544−483.522−1030.985−1178.062−188.456−735.144−910.746−370.406Trapezoidal−940.422−710.056−354.124−712.787−1224.004−151.717−531.573−946.948−318.9034P Beta−1031.384−700.287−473.375−1020.690−1210.971−74.248−788.076−823.156−374.234Johnson SB−945.135−685.965−358.766−664.596−1248.434−148.564−535.966−977.693−273.656ChilasGilgitSkarduDistributionSPISPEISPTISPISPEISPTISPISPEISPTIJohnson SU−399.837−489.813−217.797−720.244−1015.985−107.797−499.832−528.997−590.0573P Weibull−800.233−488.052−275.421−1097.487−1016.347−164.625−735.125−640.780−516.5734P Beta−805.614−574.973213.413−1085.123−1162.238−73.377−700.236−523.686−506.868Trapezoidal−720.381−579.724−72.944−922.266−1185.662−150.092−720.383−644.670−418.489Johnson SB−761.683−594.796−103.556−971.017−1213.277−75.887−711.687−656.244−399.984
Fig. 2.

Flow chart of proposed procedure for RPSWADI based on SWADI calculation at a one-month time scale (scale-1).

Fig. 3.

The geographical locations of the selected stations of the Northern area of Pakistan.

Table 1.

The statistics to address the period 1971–2017 of six selected stations.

VariableStationMeanMedianSt.DevPrecipitationAstore40.91225.70841.934Bunji14.3407.10918.901Gupis16.8525.70730.214Chilas16.7637.00623.535Gilgit12.4206.05616.576Skardu20.6319.10725.907Maximum temperatureAstore16.66516.7038.658Bunji25.19624.9528.989Gupis19.95419.7039.466Chilas27.92127.3549.662Gilgit25.46425.1559.214Skardu19.92320.0569.825Minimum temperatureAstore4.3404.30717.487Bunji11.86611.5007.808Gupis6.7476.9038.060Chilas15.14614.3069.086Gilgit8.0767.7527.307Skardu5.0685.5578.363
Fig. 4.

Theoretical vs. empirical histograms for SPI at a one-month time scale of the selected distribution for selected stations.

Fig. 5.

Temporal plots of SPI-1 for selected stations.

Fig. 6.

Temporal plots for scale-1 for SWADI and RPWSADI.

DOI: https://doi.org/10.1080/16000870.2021.1975404 | Journal eISSN: 3035-9554
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Language: English
Page range: 1975404 - 1975404
Published on: Jan 1, 2021
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services
Keywords:
spatially weighted accumulated drought index (SWADI),
regional propagation,
meteorological stations,
Northern areas of Pakistan

© 2021 Rizwan Niaz, Xiang Zhang, Zulfiqar Ali, Ijaz Hussain, Muhammad Faisal, Elsayed Elsherbini Elashkar, Jameel Ahmad Khader, Sadaf Shamshoddin Soudagar, Alaa Mohamd Shoukry, Fares Fawzi Al-Deek, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

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