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Effect of Aerosols, Tropospheric $NO_{2}$ and Clouds on Surface Solar Radiation over the Eastern Mediterranean (Greece)
| Content Provider | MDPI |
|---|---|
| Author | Alexandri, Georgia Georgoulias, Aristeidis Balis, Dimitris |
| Copyright Year | 2021 |
| Description | In this work, the effect that two basic air quality indexes, aerosols and tropospheric $NO_{2}$, exert on surface solar radiation (SSR) is studied, along with the effect of liquid and ice clouds over 16 locations in Greece, in the heart of the Eastern Mediterranean. State-of-the-art satellite-based observations and climatological data for the 15-year period 2005–2019, and a radiative transfer system based on a modified version of the Santa Barbara DISORT Atmospheric Radiative Transfer (SBDART) model are used. Our SSR simulations are in good agreement with ground observations and two satellite products. It is shown that liquid clouds dominate, with an annual radiative effect (RE) of −36 $W/m^{2}$, with ice clouds (−19 $W/m^{2}$) and aerosols (−13 $W/m^{2}$) following. The radiative effect of tropospheric $NO_{2}$ is smaller by two orders of magnitude (−0.074 $W/m^{2}$). Under clear skies, $RE_{aer}$ is about 3–4 times larger than for liquid and ice cloud-covered skies, while $RE_{NO2}$ doubles. The radiative effect of all the parameters exhibits a distinct seasonal cycle. An increase in SSR is observed for the period 2005–2019 (positive trends ranging from 0.01 to 0.52 $W/m^{2}$/year), which is mostly related to a decrease in the aerosol optical depth and the liquid cloud fraction. |
| Starting Page | 2587 |
| e-ISSN | 20724292 |
| DOI | 10.3390/rs13132587 |
| Journal | Remote Sensing |
| Issue Number | 13 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-07-01 |
| Access Restriction | Open |
| Subject Keyword | Remote Sensing Atmospheric Sciences Surface Solar Radiation Aerosols Clouds Tropospheric No2 Greece Sbdart Modis Calipso Cm Saf Ceres |
| Content Type | Text |
| Resource Type | Article |
