Spatiotemporal Variability of Chlorophyll-a and Sea Surface Temperature, and Their Relationship with Bathymetry over the Coasts of UAE

Remote Sensing

Khameis Al Abdouli¹  Dawit T. Ghebreyesus²  Hatim O. Sharif²  Pakorn Petchprayoon³  Khalid A. Hussein⁴  Naeema Al Hosani⁴ 

[1] Business Continuity Management & Integrated Emergency Management, Rabdan Academy, Abu Dhabi P.O. Box 114646, United Arab Emirates;Department of Civil and Environmental Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA;Geo-Informatics and Space Technology Development Agency (GISTDA), Bangkok 10210, Thailand;Geography and Urban Sustainability Department, College of Humanities and Social Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates;

关键词: Arabian Gulf;    Gulf of Oman;    MODIS;    algal blooms;    chlorophyll-a;    SST;   

DOI  :  10.3390/rs13132447

来源: DOAJ

【 摘 要 】

The catastrophic implication of harmful algal bloom (HAB) events in the Arabian Gulf is a strong indication that the study of the spatiotemporal distribution of chlorophyll-a and its relationship with other variables is critical. This study analyzes the relationship between chlorophyll-a (Chl-a) and sea surface temperature (SST) and their trends in the Arabian Gulf and the Gulf of Oman along the United Arab Emirates coast. Additionally, the relationship between bathymetry and Chl-a and SST was examined. The MODIS Aqua product with a resolution of 1 × 1 km² was employed for both chlorophyll-a and SST covering a timeframe from 2003 to 2019. The highest concentration of chlorophyll-a was seen in the Strait of Hormuz with an average of 2.8 mg m⁻³, which is 1.1 mg m⁻³ higher than the average for the entire study area. Three-quarters of the study area showed a significant correlation between the Chl-a and SST. The shallow (deep) areas showed a strong positive (negative) correlation between the Chl-a and SST. The results indicate the presence of trends for both variables across most of the study area. SST significantly increased in more than two-thirds of the study area in the summer with no significant trends detected in the winter.

【 授权许可】

Unknown