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المؤلفAl-Naimi, Noora
المؤلفE. Raitsos, Dionysios
المؤلفBen-Hamadou, Radhouan
المؤلفSoliman, Yousria
تاريخ الإتاحة2017-05-07T05:43:53Z
تاريخ النشر2017-03-15
اسم المنشورremote sensingen_US
المعرّفhttp://dx.doi.org/10.3390/rs9030301
الاقتباسAl-Naimi, N.; Raitsos, D.E.; Ben-Hamadou, R.; Soliman, Y. Evaluation of Satellite Retrievals of Chlorophyll-a in the Arabian Gulf. Remote Sens. 2017, 9, 301.
الرقم المعياري الدولي للكتاب2072-4292
معرّف المصادر الموحدhttp://hdl.handle.net/10576/5479
الملخصThe Arabian Gulf is a highly turbid, shallow sedimentary basin whose coastal areas have been classified as optically complex Case II waters (where ocean colour sensors have been proved to be unreliable). Yet, there is no such study assessing the performance and quality of satellite ocean-colour datasets in relation to ground truth data in the Gulf. Here, using a unique set of in situ Chlorophyll-a measurements (Chl-a; an index of phytoplankton biomass), collected from 24 locations in four transects in the central Gulf over six recent research cruises (2015–2016), we evaluated the performance of VIIRS and other merged satellite datasets, for the first time in the region. A highly significant relationship was found (r = 0.795, p < 0.001), though a clear overestimation in satellite-derived Chl-a concentrations is evident. Regardless of this constant overestimation, the remotely sensed Chl-a observations illustrated adequately the seasonal cycles. Due to the optically complex environment, the first optical depth was calculated to be on average 6–10 m depth, and thus the satellite signal is not capturing the deep chlorophyll maximum (DCM at ~25 m). Overall, the ocean colour sensors’ performance was comparable to other Case II waters in other regions, supporting the use of satellite ocean colour in the Gulf. Yet, the development of a regional-tuned algorithm is needed to account for the unique environmental conditions of the Gulf, and ultimately provide a better estimation of surface Chl-a in the region.
اللغةen
الناشرMDPI
الموضوعRemote Sensing
الموضوعSatellite
الموضوعChlorophyll-a
الموضوعArabian Gulf
الموضوعenvironmental
الموضوعocean
الموضوعphytoplankton
الموضوعocean colour
الموضوعremote sensing
الموضوعOC-CCI
العنوانEvaluation of Satellite Retrievals of Chlorophyll-a in the Arabian Gulf
النوعArticle
رقم العدد3
رقم المجلد9
dc.identifier.essn 2072-4292


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