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Orals

UP2.3

Solar "shortwave" irradiance is the main source of energy to the surface and the atmosphere. Outgoing thermal "longwave" irradiance and reflected shortwave irradiance is the only energy sink from the atmosphere. Both shortwave and longwave irradiances interact with the surface, clouds and aerosols in complex manners that are not yet comprehensively modelled in weather and climate models. Here, we will address the current state-of-the-art of these interactions, as they are represented in contemporary models. The increasing need for accurate radiation outputs for the growing renewable energy sector will also be addressed. Attention will be paid to the validation of modelled radiation output by using ground-based and satellite measurements of irradiances.

This session is expected to focus on the above points and to gather presentations and posters on the following topics:

• Handling of radiative transfer in clear and cloudy atmospheric boundary layers including three-dimensional radiative transfer aspects.
• Surface-radiation interactions including both general radiative properties of the surface and interactions with complex topographies and canopies.
• Evaluation of radiation and cloud output from NWP models and use of shortwave radiation measurements for cloud verification.
• General aspects of radiation and microphysics parametrizations and their interactions in NWP models
• Obtaining the inherent optical properties of cloud, precipitation and aerosol particles for the use of NWP models
• Time, space and spectral resolution of the radiation parametrizations required by the models from mesoscale to global circulation.

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Convener: Emily Gleeson | Co-Convener: Kristian Pagh Nielsen
Orals
| Thu, 12 Sep, 16:00–18:00|Room S4
Posters
| Attendance Fri, 13 Sep, 10:30–11:30 | Display Wed, 11 Sep, 13:30–Fri, 13 Sep, 13:30|Sports Hall

Thursday, 12 September 2019 | Room S4

Chairperson: 16849
16:00–16:30 |
EMS2019-905
| solicited
Laura Rontu, Emily Gleeson, Daniel Martin, Kristian Pagh Nielsen, Joni-Pekka Pietikäinen, and Velle Toll
Chairperson: 16849
16:30–16:45 |
EMS2019-482
Kristian Pagh Nielsen, Laura Rontu, and Emily Gleeson
Chairperson: 16849
16:45–17:00 |
EMS2019-45
Advancing Radiative Transfer Models for Solar Energy Applications
(withdrawn)
Yu Xie and Manajit Sengupta
Chairperson: 16849
Chairperson: 16849
17:15–17:30 |
EMS2019-929
Karl-Ivar Ivarsson, Daniel Martin, and Emily Gleeson
Chairperson: 16849
17:30–17:45 |
EMS2019-24
Kevin Ohneiser, Patric Seifert, Holger Baars, and Albert Ansmann
Chairperson: 16849
17:45–18:00 |
EMS2019-160
Emily Gleeson, Eoin Whelan, Laura Rontu, and Ewa McAufield

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