Investigation and validation of MODIS SST in the northern Persian Gulf

Ghanea, Mohsen; Moradi, Masoud; Kabiri, Keivan; Mehdinia, Ali

doi:10.1016/j.asr.2015.10.040

Cited by 38 publications

(13 citation statements)

References 28 publications

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“…The average LST error product is 1 • C for temperatures in the range from −10 to 50 • C [11]. LST pixels have also been filtered according to quality control tags explained on the product ATBD (Algorithm Theoretical Basis Document), meaning that only the pixels with QC values of 00 and 01 have been considered, ignoring those not produced due to cloud effects or other reasons [12].The accuracy of the MOD11 version 6 LST product has been tested and was found to mostly fall within 1 K [12][13][14], while MOD25 SST product is provided with an error lower than 0.45 K in most cases [10,15].…”

Section: Methodsmentioning

confidence: 99%

Surface Temperature of the Planet Earth from Satellite Data

2020

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The Intergovernmental Panel on Climate Change regular scientific assessments of global warming is based on measurements of air temperature from weather stations, buoys or ships. More specifically, air temperature annual means are estimated from their integration into climate models, with some areas (Africa, Antarctica, seas) being clearly underrepresented. Present satellites allow estimation of surface temperature for a full coverage of our planet with a sub-daily revisit frequency and kilometric resolution. In this work, a simple methodology is developed that allows estimating the surface temperature of Planet Earth with MODIS Terra and Aqua land and sea surface temperature products, as if the whole planet was reduced to a single pixel. The results, through a completely independent methodology, corroborate the temperature anomalies retrieved from climate models and show a linear warming trend of 0.018 ± 0.007 °C/yr.

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Section: Methodsmentioning

confidence: 99%

Surface Temperature of the Planet Earth from Satellite Data

2020

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“…The SST bias of MODIS Aqua is in the range of 0.07°C and 0.79°C [ 51 – 54 ]. The bias mainly depends on the aerosol optical depth, wind speed and satellite zenith angle [ 54 ].…”

Section: Methodsmentioning

confidence: 99%

Seasonal and annual variability of coastal sulphur plumes in the northern Benguela upwelling system

Ohde

Dadou

2018

PLoS ONE

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We investigated the seasonal and annual variability of surface sulphur plumes in the northern Benguela upwelling system off Namibia because of their significant impacts on the marine ecosystem, fishing industry, aquaculture farming and tourism due to their toxic properties. We identified the sulphur plumes in ocean colour satellite data of the medium resolution imaging spectrometer (MERIS) for the 2002–2012 time period using the differences in the spectral properties of Namibian Benguela optical water types. The sulphur events have a strong seasonal cycle with pronounced main and off-seasons forced by local and remote-driven processes. The main peak season is in late austral summer and early austral autumn at the beginning of the annual upwelling cycle caused by increasing equatorwards alongshore winds. The sulphur plume activity is high between February and April during the seasonal oxygen minimum associated with the seasonal reduction of cross-shore ventilation of the bottom waters, the seasonal southernmost position of the Angola Benguela Frontal Zone, the seasonal maximum of water mass fractions of South Atlantic and Angola Gyre Central Waters as well as the seasonal arrival of the downwelling coastal trapped waves. The off-season is in austral spring and early austral summer during increased upwelling intensity and enhanced oxygen supply. The annual variability of sulphur events is characterized by very high activities in years 2004, 2005 and 2010 interrupted by periods of lower activity in years 2002 to 2003, 2006 to 2009 and 2011 to 2012. This result can be explained by the relative contributions or adding effects of local and remote-driven forces (from the equatorial area). The probability for the occurrence of sulphur plumes is enhanced in years with a lower annual mean of upwelling intensity, decreased oxygen supply associated with decreased lateral ventilation of bottom waters, more southern position of the Angola Benguela Frontal Zone, increased mass fraction of South Atlantic Central Water and stronger downwelling coastal trapped waves. Understanding of the variability and forcing processes of the toxic sulphur events will help in the future to monitor and forecast them as well as to manage their social and economic consequences in the northern Benguela upwelling system off Namibia.

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“…Land and cloud masks, as well as L2 flag algorithm, apply to mark SST pixels with low quality. MODIS SST data have high confidence, as they significantly correlate to the in-situ SST measurements [33][34][35]. SST images were downloaded for the period: Jan. 2003 to Dec. 2018 from the NASA Ocean Color web portal (http://oceancolor.gsfc.nasa.gov).…”

Section: Sea Surface Temperaturementioning

confidence: 99%

Assessment of Climate Change Impacts on Sea Surface Temperatures and Sea Level Rise—The Arabian Gulf

Hereher

2020

Climate

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The Arabian Gulf is one of the regions in the world experiencing major changes due to increased economic growth rates and development practices. As a shallow water body within a hot desert, the Gulf is exposed to obvious warming in the sea surface temperatures (SST). Remotely sensed SST data were utilized to estimate decadal change in SST with a focus on coral reef locations. There is a positive trend in monthly time series SSTs, with a maximum value of about 0.7 °C/decade for the western side of the Gulf. This high trend of SST is associated with significant coral reef bleaching and it coincides with major climate/ocean interactions. Most of the Arabian countries along the Gulf have coastal developments at low-land areas of high vulnerability to sea level rise. Digital elevation models showed that there are more than 3100 km2 of coastal areas that occur at 1 m level along the Arabian countries of the Gulf. Coastal protection and conservation measures are crucial to protect low-lying coasts of urban use.

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Investigation and validation of MODIS SST in the northern Persian Gulf

Cited by 38 publications

References 28 publications

Surface Temperature of the Planet Earth from Satellite Data

Surface Temperature of the Planet Earth from Satellite Data

Seasonal and annual variability of coastal sulphur plumes in the northern Benguela upwelling system

Assessment of Climate Change Impacts on Sea Surface Temperatures and Sea Level Rise—The Arabian Gulf

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