Spatiotemporal variability of soil moisture over Ethiopia and its teleconnections with remote and local drivers

Simple item page
cg.authorship.typesCGIAR single centreen_US
cg.authorship.typesNot CGIAR developing country instituteen_US
cg.contributor.affiliationAddis Ababa Universityen_US
cg.contributor.affiliationInternational Livestock Research Instituteen_US
cg.contributor.affiliationAccelerating Impacts of CGIAR Climate Research for Africaen_US
cg.contributor.affiliationUniversity of Québecen_US
cg.contributor.affiliationNORCE Norwegian Research Centreen_US
cg.contributor.donorWorld Banken_US
cg.contributor.donorEuropean Unionen_US
cg.coverage.countryEthiopiaen_US
cg.coverage.iso3166-alpha2ETen_US
cg.coverage.regionAfricaen_US
cg.coverage.regionEastern Africaen_US
cg.creator.identifierTamirat Bekele Jimma: 0000-0003-1302-8507en_US
cg.creator.identifierTeferi Demissie: 0000-0002-0228-1972en_US
cg.creator.identifierGulilat T. Diro: 0000-0001-7037-0806en_US
cg.creator.identifierKassahun Ture Beketie: 0000-0001-6718-6485en_US
cg.creator.identifierTadesse Terefe Zeleke: 0000-0002-1111-6354en_US
cg.creator.identifierDawit Solomon: 0000-0002-6839-6801en_US
cg.identifier.doihttps://doi.org/10.1007/s00704-022-04335-7en_US
cg.isijournalISI Journalen_US
cg.issn0177-798Xen_US
cg.issue3-4en_US
cg.journalTheoretical and Applied Climatologyen_US
cg.volume151en_US
dc.contributor.authorJimma, Tamirat Ben_US
dc.contributor.authorDemissie, Teferien_US
dc.contributor.authorDiro, Gulilat Ten_US
dc.contributor.authorTure, Kassahunen_US
dc.contributor.authorTerefe, Tadesseen_US
dc.contributor.authorSolomon, Dawiten_US
dc.date.accessioned2024-06-26T13:28:42Zen_US
dc.date.available2024-06-26T13:28:42Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/148732en_US
dc.titleSpatiotemporal variability of soil moisture over Ethiopia and its teleconnections with remote and local driversen_US
dcterms.abstractSoil moisture is one of the essential climate variables with a potential impact on local climate variability. Despite the importance of soil moisture, studies on soil moisture characteristics in Ethiopia are less documented. In this study, the spatiotemporal variability of Ethiopian soil moisture (SM) has been characterized, and its local and remote influential driving factors are investigated. An empirical orthogonal function (EOF) and KMeans clustering algorithm have been employed to classify the large domain into homogeneous zones. Complex maximum covariance analysis (CMCA) is applied to evaluate the covariability between SM and selected local and remote variables such as rainfall (RF), evapotranspiration (ET), and sea surface temperature (SST). Inter-comparison among SM datasets highlight that the FLDAS dataset better depicts the country’s SM spatial and temporal distribution (i.e., a correlation coefficient, with observations). Results also indicate that regions located in northeastern Ethiopia are drier irrespective of the season (JJAS, MAM, and OND) considered. In contrast, the western part of the country consistently depicted a wetter condition in all seasons. During summer (JJAS), the soil moisture variability is characterized by a strong east–west spatial contrast. The highest and lowest soil moisture values were observed across the country’s central western and eastern parts, respectively. Furthermore, analyses indicate that interannual variability of SM is dictated substantially by RF, though the impact on some regions is weaker. It is also found that ET likely drives the SM in the eastern part of Ethiopia due to a higher atmospheric moisture demand that ultimately invokes changes in surface humidity and rainfall. A composite analysis based on the extreme five wettest and driest SM years revealed a similar spatial distribution of wet SM with positive anomalies of RF across the country and ET over the southern regions. Remote SSTs are also found to have a significant influence on SM distribution. In particular, equatorial central Pacific and western Indian oceans SST anomalies are predominant factors for spatiotemporal SM variations over the country. Major global oceanic indices: Oceanic Nino Index (ONI), Indian Ocean Dipole (IOD), Pacific warm pool (PACWARMPOOL), and Pacific Decadal Oscillations (PDO) are found to be closely associated with the SM anomalies in various parts of the country. The associationship between these remote SST anomalies and local soil moisture is via large-scale atmospheric circulations that are linked to regional factors such as precipitation and temperature anomalies.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.audienceAcademicsen_US
dcterms.audienceCGIARen_US
dcterms.audienceDevelopment Practitionersen_US
dcterms.audiencePolicy Makersen_US
dcterms.audienceScientistsen_US
dcterms.bibliographicCitationJimma TB, Demissie T, Diro GT, Ture K, Terefe T, Solomon D. 2024. Spatiotemporal variability of soil moisture over Ethiopia and its teleconnections with remote and local drivers (Correction). Theoretical and Applied Climatology 151:1911-1929.en_US
dcterms.extent1911-1929en_US
dcterms.issued2024-04-20en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.publisherSpringeren_US
dcterms.subjectsoilen_US
dcterms.subjectsoil moistureen_US
dcterms.typeJournal Articleen_US

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

AICCRA Journal Articles
ILRI sustainable livestock systems program outputs (2017-2024)