AS4.20 Media

The interaction of processes between the land surface, the planetary boundary layer (PBL), and the free troposphere are crucial for the understanding of weather and climate including extremes such as heavy precipitation and droughts. This requires an advanced understanding and modeling of the exchange of momentum, water, energy, and carbon at interfaces. In this session, we present and discuss current research activities contributing to this understanding, including L-A interaction and feedback to the diurnal cycle of the PBL, clouds, and precipitation as well as surface fluxes such as evapotranspiration and entrainment. We accept observational and modeling approaches to address these challenges. With respect to the observations, emphasis is put on the application of new sensor synergies, e.g., using active remote sensing for studying land surface exchange processes and entrainment at the PBL top, which have been addressed in field campaigns. With respect to theoretical understanding and modeling, we are focusing on new insights by feedback diagrams and grey zone experiments down to the large eddy simulation scale.

Co-organized as BG1.16/CL4.29/HS11.28
Convener: Volker Wulfmeyer | Co-conveners: Wim Thiery, Matthias Mauder, Linda Schlemmer, Chiel van Heerwaarden, Diego G. Miralles, Adriaan J. (Ryan) Teuling, Sonia I. Seneviratne
| Tue, 09 Apr, 16:15–18:00
Room 0.11
| Attendance Wed, 10 Apr, 16:15–18:00
Hall X5

Tuesday, 9 April 2019 | Room 0.11

Chairperson: Volker Wulfmeyer, Wim Thiery, Sonia Seneviratne, Linda Schlemmer
16:15–16:30 |
Ronny Meier, Edouard Davin, David Lawrence, and Sean Swenson
16:45–17:00 |
Arianna Valmassoi, Jimy Dudhia, Silvana Di Sabatino, and Francesco Pilla
17:00–17:15 |
| Highlight
Christopher Taylor, Cornelia Klein, Semeena Valiyaveetil Shamsudheen, and France Gerard
17:15–17:30 |
Amplification of Australian heatwaves via local land-atmosphere coupling
Anette L. Hirsch, Jason P. Evans, Giovanni Di Virgillio, Sarah Perkins-Kirkpatrick, Daniel Argüeso, Claire Carouge, Jatin Kala, Julia Andrys, Paola Petrelli, and Burkhardt Rockel
17:30–17:45 |
David Leutwyler, Adel Imamovic, and Christoph Schär
17:45–18:00 |
Natalie Theeuwes, Janet Barlow, Adriaan Teuling, Sue Grimmond, and Simone Kotthaus