Comparing SPI and RDI Applied at Local Scale as Influenced by Climate

Published on Feb 1, 2018in Water Resources Management 2.64
· DOI :10.1007/s11269-017-1855-7
Abdelaaziz Merabti2
Estimated H-index: 2
(École Normale Supérieure),
Hind Meddi9
Estimated H-index: 9
(École Normale Supérieure)
+ 1 AuthorsLuis S. Pereira50
Estimated H-index: 50
(Instituto Superior de Agronomia)
Abstract
Drought and wetness events were studied in the Northeast Algeria with SPI and RDI. The study area includes a variety of climatic conditions, ranging from humid in the North, close to the Mediterranean Sea, to arid in the South, near the Sahara Desert. SPI only uses precipitation data while RDI uses a ratio between precipitation and potential evapotranspiration (PET). The latter was computed with the Thornthwaite equation, thus using temperature data only. Monthly precipitation data were obtained from 123 rainfall stations and monthly temperature data were obtained from CFSR reanalysis gridded temperature data. Both data sets cover the period 1979–80 to 2013–14. Using ordinary kriging, the gridded temperature data was interpolated to all the locations having precipitation data, thus providing to compute SPI and RDI with the same observed rainfall data for the 3-, 6- and 12-month time scales. SPI and RDI were therefore compared at station level and results and have shown that both indices revealed more sensitive to drought when applied in the semi-arid and arid zones. Differently, more wetness events were detected by RDI in the more humid locations. Comparing both indices, they show a coherent and similar behavior, however RDI shows smaller differences among climate zones and time-scales, which is an advantage relative to the SPI and is likely due to including PET in RDI.
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References57
Published on Jan 1, 2017in Theoretical and Applied Climatology 2.32
S. Taibi1
Estimated H-index: 1
,
Hind Meddi9
Estimated H-index: 9
+ 1 AuthorsAli A. Assani14
Estimated H-index: 14
(Université du Québec à Trois-Rivières)
This work aims, as a first step, to analyze rainfall variability in Northern Algeria, in particular extreme events, during the period from 1940 to 2010. Analysis of annual rainfall shows that stations in the northwest record a significant decrease in rainfall since the 1970s. Frequencies of rainy days for each percentile (5th, 10th, 25th, 50th, 75th, 90th, 95th, and 99th) and each rainfall interval class (1–5, 5–10, 10–20, 20–50, and ≥50 mm) do not show a significant change in the evolution of d...
9 Citations Source Cite
Published on Oct 30, 2014in Hydrological Processes 3.18
Daniel R. Fuka13
Estimated H-index: 13
(Virginia Tech),
M. Todd Walter31
Estimated H-index: 31
(Cornell University)
+ 3 AuthorsZachary M. Easton24
Estimated H-index: 24
(Virginia Tech)
Obtaining representative meteorological data for watershed-scale hydrological modelling can be difficult and time consuming. Land-based weather stations do not always adequately represent the weather occurring over a watershed, because they can be far from the watershed of interest and can have gaps in their data series, or recent data are not available. This study presents a method for using the Climate Forecast System Reanalysis (CFSR) global meteorological dataset to obtain historical weather...
102 Citations Source Cite
Published on Jun 1, 2014in International Journal of Climatology 3.10
Jonathan Spinoni16
Estimated H-index: 16
,
Gustavo Naumann14
Estimated H-index: 14
+ 2 AuthorsJürgen Vogt17
Estimated H-index: 17
In the context of climate change characterized by rising temperature and more extreme precipitation regimes, drought is one of the most relevant natural disasters. This paper presents maps of global drought frequency, duration, and severity for the periods 1951-1970, 1971-1990, and 1991-2010, to give an overview of the respective drought hot spots. Drought frequency is defined as the number of drought events occurred, drought duration as the number of months in drought conditions, and drought se...
103 Citations Source Cite
Published on Mar 1, 2006in Water International 1.96
Ana A. Paulo10
Estimated H-index: 10
(Technical University of Lisbon),
Luis S. Pereira50
Estimated H-index: 50
(Technical University of Lisbon)
Abstract A better knowledge of droughts is required to improve water management in water scarce areas. To appropriately cope with droughts, there is the need to adopt adequate concepts relative to droughts and water scarcity, to properly use drought indices that help characterize them, including ones relative to their severity, and to develop prediction tools that may be useful for early warning and that may reduce the respective lead time needed for appropriate response. In this paper, concepts...
90 Citations Source Cite
Published on Oct 1, 2014in Agricultural Water Management 3.18
Lazar Tanasijevic2
Estimated H-index: 2
,
Mladen Todorovic12
Estimated H-index: 12
+ 2 AuthorsPiero Lionello28
Estimated H-index: 28
(University of Salento)
Abstract The Mediterranean basin is the largest world area having specific climatic conditions suitable for olive cultivation, which has a great socio-economic importance in the region. However, the Mediterranean might be particularly affected by climate change, which could have extensive impacts on ecosystems and agricultural production. This work focussed on the climate change impact on olive growing in the Mediterranean region considering the possible alterations of cultivable areas, phenolog...
48 Citations Source Cite
Published on Aug 1, 2010in Bulletin of the American Meteorological Society 7.80
Suranjana Saha17
Estimated H-index: 17
(National Oceanic and Atmospheric Administration),
Shrinivas Moorthi8
Estimated H-index: 8
+ 49 AuthorsDavid Behringer20
Estimated H-index: 20
The NCEP Climate Forecast System Reanalysis (CFSR) was completed for the 31-yr period from 1979 to 2009, in January 2010. The CFSR was designed and executed as a global, high-resolution coupled atmosphere–ocean–land surface–sea ice system to provide the best estimate of the state of these coupled domains over this period. The current CFSR will be extended as an operational, real-time product into the future. New features of the CFSR include 1) coupling of the atmosphere and ocean during the gene...
2,482 Citations Source Cite
Published on Sep 1, 2013in Water Resources Management 2.64
Seyed Adib Banimahd3
Estimated H-index: 3
(Shiraz University),
Davar Khalili17
Estimated H-index: 17
(Shiraz University)
Comparability analyses were carried out to investigate behavioural aspects of effective drought index (EDI), standardized precipitation index (SPI), reconnaissance drought index (RDI) and standardized precipitation evapotranspiration index (SPEI), considering 3-month, 6-month and annual time periods. Investigations included parametric/non-parametric correlation analysis among indices, climatic zone influence, record length impacts and evapotranspiration role (RDI and SPEI) on Markov chains predi...
33 Citations Source Cite
Published on Apr 1, 2015in Water Resources Management 2.64
Alireza Shokoohi6
Estimated H-index: 6
(Imam Khomeini International University),
Reza Morovati2
Estimated H-index: 2
(Imam Khomeini International University)
This study intends to evaluate the performance of RDI and SPI in Lake Urmia Basin, Iran. The data base used in this research was GPCC for precipitation and NCEP/NCAR for temperature. This study aims not only to evaluate the performance of RDI and SPI, but also to find out the reason of Urmia Lake drying up as second largest hyper saline lake in the world. According to the results, Urmia Lake basin faced the most severe drought condition in the past half century in 1998–2000, and afterwards it co...
13 Citations Source Cite
Published on Sep 1, 2008in Global and Planetary Change 3.98
Filippo Giorgi89
Estimated H-index: 89
(International Centre for Theoretical Physics),
Piero Lionello28
Estimated H-index: 28
Abstract We present a review of climate change projections over the Mediterranean region based on the most recent and comprehensive ensembles of global and regional climate change simulations completed as part of international collaborative projects. A robust and consistent picture of climate change over the Mediterranean emerges, consisting of a pronounced decrease in precipitation, especially in the warm season, except for the northern Mediterranean areas (e.g. the Alps) in winter. This drying...
1,347 Citations Source Cite
Published on Jul 1, 2011in Climate Dynamics 3.77
Ramzi Touchan22
Estimated H-index: 22
(University of Arizona),
Kevin J. Anchukaitis35
Estimated H-index: 35
(Columbia University)
+ 3 AuthorsAli Aloui3
Estimated H-index: 3
Changes in precipitation patterns and the frequency and duration of drought are likely to be the feature of anthropogenic climate change that will have the most direct and most immediate consequences for human populations. The latest generation of state-of-the-art climate models project future widespread drying in the subtropics. Here, we reconstruct spatially-complete gridded Palmer drought severity index values back to A.D. 1179 over Morocco, Algeria, and Tunisia. The reconstructions provide l...
89 Citations Source Cite
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Published on Feb 1, 2018in Water Resources Management 2.64
Abdelaaziz Merabti2
Estimated H-index: 2
(École Normale Supérieure),
Diogo S. Martins6
Estimated H-index: 6
(University of Lisbon)
+ 1 AuthorsLuis S. Pereira50
Estimated H-index: 50
(University of Lisbon)
The spatial and temporal variability of droughts were studied for the Northeast Algeria using SPI and RDI computed with monthly precipitation data from 123 rainfall stations and CFSR reanalysis monthly temperature data covering the period 1979–80 to 2013–14. The gridded temperature data was interpolated to all the locations having precipitation data, thus providing to compute SPI and RDI with the time scales of 3-, 6- and 12-month with the same observed rainfall data. Spatial and temporal patter...
2 Citations Source Cite
Published on Aug 21, 2018in Remote Sensing 3.41
Virgílio A. Bento3
Estimated H-index: 3
,
Isabel F. Trigo27
Estimated H-index: 27
+ 1 AuthorsCarlos C. DaCamara21
Estimated H-index: 21
The Vegetation Health Index (VHI) is widely used for monitoring drought using satellite data. VHI depends on vegetation state and thermal stress, respectively assessed via (i) the Vegetation Condition Index (VCI) that usually relies on information from the visible and near infra-red parts of the spectrum (in the form of Normalized Difference Vegetation Index, NDVI); and (ii) the Thermal Condition Index (TCI), based on top of atmosphere thermal infrared (TIR) brightness temperature or on TIR-deri...
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