Estimation of the Land Surface Albedo Changes in the Broader Mediterranean Area, Based on 12 Years of Satellite Observations

Benas, Nikos; Chrysoulakis, Nektarios

doi:10.3390/rs71215816

Cited by 12 publications

(2 citation statements)

References 38 publications

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“…The MODIS 16-day 1 km albedo products (MCD43B3, collection5) from 2001 to 2011 were used in this study. The product contains the black-sky albedo (BSA) and the white-sky albedo (WSA), which can be used to calculate the actual (blue-sky) albedo based on the fraction of diffuse skylight [49,50]. Considering the small difference and high correlation between BSA and WSA [44,[51][52][53], WSA was used as the index of albedo in this study.…”

Section: Surface Albedo Data Setmentioning

confidence: 99%

Assessing the Impacts of Urbanization on Albedo in Jing-Jin-Ji Region of China

et al. 2018

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As an indicative parameter that represents the ability of the Earth's surface to reflect solar radiation, albedo determines the allocation of solar energy between the Earth's surface and the atmosphere, which plays an important role in both global and local climate change. Urbanization is a complicated progress that greatly affects urban albedo via land cover change, human heat, aerosol, and other human activities. Although many studies have been conducted to identify the effects of these various factors on albedo separately, there are few studies that have quantitatively determined the combined effects of urbanization on albedo. In this study, based on a partial derivative method, vegetation index data and nighttime light data were used to quantitatively calculate the natural climate change and human activities' contributions to albedo variations in the Jing-Jin-Ji region, during its highest population growth period from 2001 to 2011. The results show that (1) 2005 is the year when urbanization starts accelerating in the Jing-Jin-Ji region; (2) albedo trends are equal to 0.0065 year −1 before urbanization and 0.0012 year −1 after urbanization, which is a reduction of 4/5; and (3) the contribution rate of urbanization increases from 15% to 48.4%, which leads to a decrease in albedo of approximately 0.05. Understanding the contribution of urbanization to variations in urban albedo is significant for future studies on urban climate change via energy balance and can provide scientific data for energy conservation policymaking.

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Section: Surface Albedo Data Setmentioning

confidence: 99%

Assessing the Impacts of Urbanization on Albedo in Jing-Jin-Ji Region of China

et al. 2018

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“…The findings showed that the surface albedo trend in the Levant region increased by 3.3 percent and decreased by 6.6 percent in North Africa, while different signs were observed in Southern Europe. Also, the findings showed that changes in land surface cover, changes in precipitation, and the optical thickness of airwaves play an important role in surface albedo anomalies (Benas and Chrysoulakis, 2015). To analyze the albedo trend in the Tibetan Plateau, the albedo of the MODIS was compared with the default of the WRF model in the period from 2000 to 2009.…”

Section: Introductionmentioning

confidence: 99%

Detection of Land Surface Albedo Changes over Iran using Remote Sensing Data

Motlagh

Darand

2023

Preprint

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Albedo is one of the key parameters in climatic studies. Investigating its temporal and spatial behavior can be a tool for understanding environmental changes. The MODIS sensor continuously produces the land surface albedo on a global scale and with the appropriate spatial resolution and makes it available to researchers. In this study, to analyze Iran’s surface albedo trend, first, the daily albedo data of the MODIS on Iran in the period from 1/1/2001 to 12/30/2021 with a spatial resolution of 500 meters was prepared from the NASA website. After the necessary pre-processing, the long-term seasonal and annual trend of Iran's albedo was calculated at the 90% confidence level using the non-parametric Mann-Kendall test. The findings showed that the albedo trend is positive in the lowland interior areas of Iran and negative in the highland areas. Since the decreasing trend of albedo in highland areas indicates the reduction of snow cover in these areas, this issue can challenge the life and water resources of these areas that rely on the accumulation of snow.

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Detection of land surface albedo changes over Iran using remote sensing data

Kefayat Motlagh,

Darand

2024

Meteorological Applications

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Albedo is one of the key parameters in climatic studies. Investigating its temporal and spatial behavior can be a tool for understanding environmental changes. The MODIS sensor continuously produces the land surface albedo on a global scale and with the appropriate spatial resolution and makes it available to researchers. In this study, to analyze Iran's surface albedo trend, first, the daily albedo data of the MODIS on Iran in the period from January 1, 2001 to December 30, 2021 with a spatial resolution of 500 m were prepared from the NASA website. After the necessary pre‐processing, the long‐term seasonal and annual trend of Iran's albedo was calculated at the 90% confidence level using the non‐parametric Mann–Kendall test. The findings showed that the albedo trend is positive in the lowland interior areas of Iran and negative in the highland areas. Since the decreasing trend of albedo in highland areas indicates the reduction of snow cover in these areas, this issue can challenge the life and water resources of these areas that rely on the accumulation of snow.

show abstract

Estimation of the Land Surface Albedo Changes in the Broader Mediterranean Area, Based on 12 Years of Satellite Observations

Cited by 12 publications

References 38 publications

Assessing the Impacts of Urbanization on Albedo in Jing-Jin-Ji Region of China

Assessing the Impacts of Urbanization on Albedo in Jing-Jin-Ji Region of China

Detection of Land Surface Albedo Changes over Iran using Remote Sensing Data

Detection of land surface albedo changes over Iran using remote sensing data

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