Jurnal

Century-Scale Climate Evolution in Semiarid High Plateaus, Algeria

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ABSTRACT: The study presents a comprehensive analysis of long-term climate trends in Setif, Algeria, a representative semiarid highland station, using a 125-yr dataset (1900-2024) of monthly and annual precipitation and maximum and minimum temperature. Given the discontinuities in the historical dataset, two neighboring reference stations (Batna and Constantine) and three imputation methods were used: multiple linear regression (MLR), seasonal imputation, and multiple imputation by chained equations (MICE). MICE demonstrated superior performance for all variables. The imputed data set revealed statistically significant climate changes consistent with Mediterranean aridification patterns. Trend analysis showed precipitation declining at 26.5 mm decade21 , while maximum temperature and minimum temperature increased at 0.028 and 0.298C decade21 , respectively. The asymmetric warming pattern, with minimum temperature rising faster than maximum temperature, is confirmed. However, Pettitt?s changepoint test identifies several breakpoints in the time series 1900-2024; the precipitation pattern breakpoint was in 1975 with a decrease of 277.5 mm. The minimum temperature breakpoint was in 1973 (12.18C), and maximum temperature breakpoint was in 1987 (11.448C). Recent decades (1980-2024) show accelerated trends, with precipitation decreasing by 213 mm decade21 and a maximum temperature warming of 10.58C decade21 . These findings confirm North Africa as a climate change hotspot, with Setif experiencing rates of change exceeding global averages. The successful reconstruction of this century-scale dataset provides crucial baseline information for climate adaptation strategies in semiarid regions facing increasing water stress and agricultural challenges.

KEYWORDS: Temperature; Interannual variability; Trends; Precipitation; Time series

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

551.6965 ROU c

Penerbit

Boston, USA : American Meteorological Society., 2026

Deskripsi Fisik

Page(s): 311-321; Illus

Bahasa

English

ISBN/ISSN

1558-8432

Klasifikasi

551.6965

Tipe Isi

text

Tipe Media

unspecified

Tipe Pembawa

volume

Edisi

Volume 65 (2026): Issue 2 (Feb 2026)

Subjek

Climatology — Algeria — History
Arid regions climate — Algeria
Climatic changes — Algeria — Case studies
Plateaus — Algeria

Info Detail Spesifik

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Pernyataan Tanggungjawab

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Versi lain/terkait

Lampiran Berkas

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