NASA POWER
Longwave irradiance, all-sky — annual mean
All-sky surface longwave downward irradiance. NASA POWER annual mean, MERRA-2 based.
Trend
Latest values
| Period | Area | Value | Unit |
|---|---|---|---|
| 2025 | Damascus | 26.99 | MJ/m^2/day |
| 2025 | Tartus | 30.79 | MJ/m^2/day |
| 2025 | Al-Hasakah | 28.70 | MJ/m^2/day |
| 2025 | Daraa | 27.62 | MJ/m^2/day |
| 2025 | Homs | 27.88 | MJ/m^2/day |
| 2025 | Hama | 28.95 | MJ/m^2/day |
| 2025 | Deir ez-Zor | 29.18 | MJ/m^2/day |
| 2025 | Latakia | 30.99 | MJ/m^2/day |
| 2025 | Rif Dimashq | 26.99 | MJ/m^2/day |
| 2025 | Aleppo | 28.54 | MJ/m^2/day |
| 2025 | Raqqa | 28.51 | MJ/m^2/day |
| 2025 | Quneitra | 29.53 | MJ/m^2/day |
| 2025 | Idlib | 28.95 | MJ/m^2/day |
| 2025 | As-Suwayda | 27.62 | MJ/m^2/day |
| 2024 | As-Suwayda | 28.04 | MJ/m^2/day |
| 2024 | Al-Hasakah | 29.28 | MJ/m^2/day |
| 2024 | Damascus | 27.45 | MJ/m^2/day |
| 2024 | Latakia | 31.61 | MJ/m^2/day |
| 2024 | Aleppo | 29.26 | MJ/m^2/day |
| 2024 | Deir ez-Zor | 29.71 | MJ/m^2/day |
| 2024 | Tartus | 31.37 | MJ/m^2/day |
| 2024 | Hama | 29.66 | MJ/m^2/day |
| 2024 | Rif Dimashq | 27.45 | MJ/m^2/day |
| 2024 | Daraa | 28.04 | MJ/m^2/day |
| 2024 | Raqqa | 29.16 | MJ/m^2/day |
| 2024 | Idlib | 29.66 | MJ/m^2/day |
| 2024 | Homs | 28.36 | MJ/m^2/day |
| 2024 | Quneitra | 30.08 | MJ/m^2/day |
| 2023 | Aleppo | 28.75 | MJ/m^2/day |
| 2023 | Idlib | 29.24 | MJ/m^2/day |
| 2023 | As-Suwayda | 28.09 | MJ/m^2/day |
| 2023 | Rif Dimashq | 27.42 | MJ/m^2/day |
| 2023 | Raqqa | 28.83 | MJ/m^2/day |
| 2023 | Daraa | 28.09 | MJ/m^2/day |
| 2023 | Latakia | 31.08 | MJ/m^2/day |
| 2023 | Homs | 28.23 | MJ/m^2/day |
| 2023 | Damascus | 27.42 | MJ/m^2/day |
| 2023 | Quneitra | 29.93 | MJ/m^2/day |
| 2023 | Hama | 29.24 | MJ/m^2/day |
| 2023 | Deir ez-Zor | 29.50 | MJ/m^2/day |
| 2023 | Tartus | 30.93 | MJ/m^2/day |
| 2023 | Al-Hasakah | 29.01 | MJ/m^2/day |
| 2022 | Deir ez-Zor | 29.54 | MJ/m^2/day |
| 2022 | Raqqa | 28.84 | MJ/m^2/day |
| 2022 | Daraa | 27.83 | MJ/m^2/day |
| 2022 | Quneitra | 29.37 | MJ/m^2/day |
| 2022 | Rif Dimashq | 27.23 | MJ/m^2/day |
| 2022 | Al-Hasakah | 28.89 | MJ/m^2/day |
| 2022 | Idlib | 29.19 | MJ/m^2/day |
| 2022 | Tartus | 30.57 | MJ/m^2/day |
| 2022 | Damascus | 27.23 | MJ/m^2/day |
| 2022 | Hama | 29.19 | MJ/m^2/day |
| 2022 | Homs | 28.21 | MJ/m^2/day |
| 2022 | Aleppo | 28.71 | MJ/m^2/day |
| 2022 | As-Suwayda | 27.83 | MJ/m^2/day |
| 2022 | Latakia | 30.93 | MJ/m^2/day |
| 2021 | Aleppo | 28.17 | MJ/m^2/day |
| 2021 | Al-Hasakah | 28.50 | MJ/m^2/day |
| 2021 | Damascus | 27.29 | MJ/m^2/day |
| 2021 | As-Suwayda | 27.74 | MJ/m^2/day |
| 2021 | Deir ez-Zor | 29.13 | MJ/m^2/day |
| 2021 | Daraa | 27.74 | MJ/m^2/day |
| 2021 | Tartus | 30.13 | MJ/m^2/day |
| 2021 | Rif Dimashq | 27.29 | MJ/m^2/day |
| 2021 | Hama | 28.81 | MJ/m^2/day |
| 2021 | Homs | 28.25 | MJ/m^2/day |
| 2021 | Quneitra | 27.85 | MJ/m^2/day |
| 2021 | Idlib | 28.81 | MJ/m^2/day |
| 2021 | Latakia | 30.71 | MJ/m^2/day |
| 2021 | Raqqa | 28.57 | MJ/m^2/day |
| 2020 | Hama | 29.12 | MJ/m^2/day |
| 2020 | Daraa | 28.21 | MJ/m^2/day |
| 2020 | Damascus | 27.70 | MJ/m^2/day |
| 2020 | Tartus | 30.55 | MJ/m^2/day |
| 2020 | Latakia | 31.05 | MJ/m^2/day |
| 2020 | Al-Hasakah | 28.80 | MJ/m^2/day |
| 2020 | Deir ez-Zor | 29.20 | MJ/m^2/day |
| 2020 | Idlib | 29.12 | MJ/m^2/day |
| 2020 | Quneitra | 28.32 | MJ/m^2/day |
| 2020 | As-Suwayda | 28.21 | MJ/m^2/day |
| 2020 | Homs | 28.74 | MJ/m^2/day |
| 2020 | Aleppo | 28.40 | MJ/m^2/day |
| 2020 | Rif Dimashq | 27.70 | MJ/m^2/day |
| 2020 | Raqqa | 28.72 | MJ/m^2/day |
| 2019 | Aleppo | 28.68 | MJ/m^2/day |
| 2019 | Daraa | 27.75 | MJ/m^2/day |
| 2019 | Raqqa | 28.75 | MJ/m^2/day |
| 2019 | Latakia | 31.03 | MJ/m^2/day |
| 2019 | Idlib | 29.24 | MJ/m^2/day |
| 2019 | Deir ez-Zor | 29.21 | MJ/m^2/day |
| 2019 | Homs | 28.53 | MJ/m^2/day |
| 2019 | Rif Dimashq | 27.41 | MJ/m^2/day |
| 2019 | As-Suwayda | 27.75 | MJ/m^2/day |
| 2019 | Damascus | 27.41 | MJ/m^2/day |
| 2019 | Tartus | 30.38 | MJ/m^2/day |
| 2019 | Quneitra | 28.04 | MJ/m^2/day |
| 2019 | Al-Hasakah | 28.78 | MJ/m^2/day |
| 2019 | Hama | 29.24 | MJ/m^2/day |
| 2018 | Aleppo | 29.18 | MJ/m^2/day |
| 2018 | Daraa | 28.40 | MJ/m^2/day |
| 2018 | Raqqa | 29.59 | MJ/m^2/day |
| 2018 | Deir ez-Zor | 30.14 | MJ/m^2/day |
| 2018 | Latakia | 31.48 | MJ/m^2/day |
| 2018 | Tartus | 30.81 | MJ/m^2/day |
| 2018 | Hama | 29.72 | MJ/m^2/day |
| 2018 | Homs | 29.02 | MJ/m^2/day |
| 2018 | Quneitra | 28.55 | MJ/m^2/day |
| 2018 | Rif Dimashq | 27.88 | MJ/m^2/day |
| 2018 | Al-Hasakah | 29.81 | MJ/m^2/day |
| 2018 | Idlib | 29.72 | MJ/m^2/day |
| 2018 | Damascus | 27.88 | MJ/m^2/day |
| 2018 | As-Suwayda | 28.40 | MJ/m^2/day |
| 2017 | Raqqa | 28.71 | MJ/m^2/day |
| 2017 | Aleppo | 28.06 | MJ/m^2/day |
| 2017 | Idlib | 28.75 | MJ/m^2/day |
| 2017 | As-Suwayda | 27.48 | MJ/m^2/day |
| 2017 | Tartus | 30.02 | MJ/m^2/day |
| 2017 | Hama | 28.75 | MJ/m^2/day |
| 2017 | Homs | 28.21 | MJ/m^2/day |
| 2017 | Rif Dimashq | 27.18 | MJ/m^2/day |
| 2017 | Quneitra | 27.76 | MJ/m^2/day |
| 2017 | Deir ez-Zor | 29.19 | MJ/m^2/day |
| 2017 | Damascus | 27.18 | MJ/m^2/day |
| 2017 | Daraa | 27.48 | MJ/m^2/day |
| 2017 | Al-Hasakah | 28.51 | MJ/m^2/day |
| 2017 | Latakia | 30.62 | MJ/m^2/day |
| 2016 | Idlib | 28.93 | MJ/m^2/day |
| 2016 | Aleppo | 28.25 | MJ/m^2/day |
| 2016 | Daraa | 27.88 | MJ/m^2/day |
| 2016 | Hama | 28.93 | MJ/m^2/day |
| 2016 | As-Suwayda | 27.88 | MJ/m^2/day |
| 2016 | Al-Hasakah | 28.75 | MJ/m^2/day |
| 2016 | Tartus | 30.23 | MJ/m^2/day |
| 2016 | Homs | 28.42 | MJ/m^2/day |
| 2016 | Rif Dimashq | 27.53 | MJ/m^2/day |
| 2016 | Deir ez-Zor | 29.28 | MJ/m^2/day |
| 2016 | Raqqa | 28.73 | MJ/m^2/day |
| 2016 | Latakia | 30.80 | MJ/m^2/day |
| 2016 | Damascus | 27.53 | MJ/m^2/day |
| 2016 | Quneitra | 27.99 | MJ/m^2/day |
| 2015 | Aleppo | 28.46 | MJ/m^2/day |
| 2015 | Idlib | 29.13 | MJ/m^2/day |
| 2015 | Tartus | 30.34 | MJ/m^2/day |
| 2015 | As-Suwayda | 28.08 | MJ/m^2/day |
| 2015 | Deir ez-Zor | 29.52 | MJ/m^2/day |
| 2015 | Latakia | 30.91 | MJ/m^2/day |
| 2015 | Hama | 29.13 | MJ/m^2/day |
| 2015 | Quneitra | 28.24 | MJ/m^2/day |
| 2015 | Daraa | 28.08 | MJ/m^2/day |
| 2015 | Al-Hasakah | 29.03 | MJ/m^2/day |
| 2015 | Raqqa | 28.92 | MJ/m^2/day |
| 2015 | Homs | 28.58 | MJ/m^2/day |
| 2015 | Rif Dimashq | 27.67 | MJ/m^2/day |
| 2015 | Damascus | 27.67 | MJ/m^2/day |
| 2014 | Damascus | 27.38 | MJ/m^2/day |
| 2014 | Deir ez-Zor | 29.43 | MJ/m^2/day |
| 2014 | Aleppo | 28.57 | MJ/m^2/day |
| 2014 | Latakia | 30.92 | MJ/m^2/day |
| 2014 | As-Suwayda | 27.81 | MJ/m^2/day |
| 2014 | Daraa | 27.81 | MJ/m^2/day |
| 2014 | Quneitra | 27.95 | MJ/m^2/day |
| 2014 | Hama | 29.09 | MJ/m^2/day |
| 2014 | Tartus | 30.21 | MJ/m^2/day |
| 2014 | Raqqa | 28.92 | MJ/m^2/day |
| 2014 | Homs | 28.45 | MJ/m^2/day |
| 2014 | Rif Dimashq | 27.38 | MJ/m^2/day |
| 2014 | Idlib | 29.09 | MJ/m^2/day |
| 2014 | Al-Hasakah | 29.00 | MJ/m^2/day |
| 2013 | Damascus | 27.22 | MJ/m^2/day |
| 2013 | Deir ez-Zor | 29.07 | MJ/m^2/day |
| 2013 | Aleppo | 28.06 | MJ/m^2/day |
| 2013 | Tartus | 30.02 | MJ/m^2/day |
| 2013 | As-Suwayda | 27.77 | MJ/m^2/day |
| 2013 | Quneitra | 27.86 | MJ/m^2/day |
| 2013 | Hama | 28.77 | MJ/m^2/day |
| 2013 | Al-Hasakah | 28.49 | MJ/m^2/day |
| 2013 | Raqqa | 28.56 | MJ/m^2/day |
| 2013 | Idlib | 28.77 | MJ/m^2/day |
| 2013 | Homs | 28.26 | MJ/m^2/day |
| 2013 | Rif Dimashq | 27.22 | MJ/m^2/day |
| 2013 | Daraa | 27.77 | MJ/m^2/day |
| 2013 | Latakia | 30.57 | MJ/m^2/day |
| 2012 | Damascus | 27.64 | MJ/m^2/day |
| 2012 | Aleppo | 28.53 | MJ/m^2/day |
| 2012 | Hama | 29.19 | MJ/m^2/day |
| 2012 | As-Suwayda | 28.05 | MJ/m^2/day |
| 2012 | Idlib | 29.19 | MJ/m^2/day |
| 2012 | Latakia | 31.05 | MJ/m^2/day |
| 2012 | Daraa | 28.05 | MJ/m^2/day |
| 2012 | Al-Hasakah | 29.17 | MJ/m^2/day |
| 2012 | Homs | 28.67 | MJ/m^2/day |
| 2012 | Tartus | 30.53 | MJ/m^2/day |
| 2012 | Rif Dimashq | 27.64 | MJ/m^2/day |
| 2012 | Quneitra | 28.26 | MJ/m^2/day |
| 2012 | Deir ez-Zor | 29.63 | MJ/m^2/day |
| 2012 | Raqqa | 29.09 | MJ/m^2/day |
| 2011 | Aleppo | 28.01 | MJ/m^2/day |
| 2011 | Damascus | 27.10 | MJ/m^2/day |
| 2011 | As-Suwayda | 27.49 | MJ/m^2/day |
| 2011 | Hama | 28.79 | MJ/m^2/day |
Older values are not shown. The table contains the 200 most recent rows.
Spot an issue with this data? Tell us.
Corrections with a source or reference are the fastest to act on. Contact details are optional.