Geodesy contributes to Atmospheric Science by providing some of the Essential Climate Variables of the Global Climate Observing System (GCOS) such as: sea level from radar altimetry, mass changes ofice and terrestrial water from satellite gravimetric missions, atmospheric water vapor from ground-based and space-based GNSS, as well as from VLBI and DORIS, atmospheric temperature from GNSS RO. Sensing of the neutral atmosphere with space geodetic techniques is an established field of research and applications, thanks to the availability of regional and global ground-based networks as well as satellite-based missions. Water vapor, the most abundant greenhouse gas of the atmosphere, is under-sampled in the current meteorological and climate observing systems, therefore obtaining and exploiting more high-quality humidity observations is essential to weather forecasting and climate monitoring. The production, exploitation and evaluation of operational GNSS-Meteorology for weather forecasting is well established in Europe due to two decades of outstanding cooperation between the geodetic community and European national meteorological services. Advancements in Numerical Weather Prediction Models (NWP) to improve forecasting of extreme precipitation, require GNSS troposphere products with a higher resolution in space and shorter delivery times than are currently in use. Homogeneously reprocessed GNSS observations on a regional and global scale have high potential for monitoring water vapor climatic trends and variability. With shortening orbit repeat periods SAR measurements are a new potential source of information to improve NWP models. At the same time, high-resolution NWP data have recently been used for deriving a new generation of mapping functions. In real-time GNSS processing these data can be employed to initialize Precise Point Positioning (PPP) processing algorithms, shortening convergence times and improving positioning. Furthermore, GNSS-reflectometry is establishing itself as an alternative method for retrieving soil moisture and has the potential to be used to retrieve near-surface water vapor.

We welcome, but not limit, contributions on the subjects below:

· Estimates of the state of the neutral atmosphere using ground-based and space-based geodetic data, use of those estimates in weather forecasting and climate monitoring.
· Multi-GNSS and multi-instruments approaches to retrieve and inter-compare tropospheric parameters.
· Real-Time and reprocessed tropospheric products for now-casting, forecasting and climate monitoring.
· Assimilation of GNSS tropospheric products in NWP and in climate reanalysis models.
· Production of SAR-based tropospheric parameters and use of them in NWP.
· Methods for homogenization of long-term GNSS tropospheric products.
· Studies of the delay properties of the GNSS signals for Earth-space propagation experiments.
· Usage of NWP data in GNSS data processing.
· Techniques on retrieval of soil moisture from GNSS observations and of ground-atmosphere boundary interactions.
· Usage of satellite gravity observations, as obtained from GRACE and its successor GRACE-FO, for studying the atmospheric water cycle.

Co-organized as AS5.11
Convener: Rosa Pacione | Co-conveners: Gert Mulder, Maximilian Semmling, Norman Teferle, Henrik Vedel
| Mon, 08 Apr, 14:00–18:00
Room -2.21
| Attendance Tue, 09 Apr, 16:15–18:00
Hall X3

Attendance time: Tuesday, 9 April 2019, 16:15–18:00 | Hall X3

Chairperson: Maximilian Semmling
X3.59 |
Jonathan Jones, Kalev Rannat, Galina Dick, and Junhong Wang
X3.60 |
Rosa Pacione, Carine Bruyninx, Elmar Brockmann, and Wolfgang Söhne
X3.61 |
Henrik Vedel, Siebren de Haan, Jonathan Jones, and Owen Lewis
X3.62 |
Stylianos Bitharis, Christos Pikridas, Aristeidis Fotiou, and Ion-Anastasios Karolos
X3.63 |
Christos Pikridas, Aristeidis Fotiou, Ion-Anastasios Karolos, and Stylianos Bitharis
X3.64 |
Guergana Guerova, Tsvetelina Dimitrova, Martin Slavchev, Krasimir Stoev, Stefan Georgiev, and Keranka Vassileva
X3.65 |
Yohannes Getachew Ejjigu, Felix Norman Teferle, Anna Klos, Janusz Bogusz, and Addisu Hunegnaw
X3.66 |
Paweł Gołaszewski and Paweł Wielgosz
X3.67 |
Maximilian Semmling, Georges Stienne, Swanne Gontharet, Sebastian Gerland, Serge Reboul, and Jens Wickert
X3.68 |
Ryuichi Ichikawa, Hideki Ujihara, Shinsuke Satoh, Jun Amagai, Yusaku Ohta, Basara Miyahara, Hiroshi Munekane, Taketo Nagasaki, Osamu Tajima, Kentaro Araki, Takuya Tajiri, Hiroshi Takiguchi, Takeshi Matsushima, Nobuo Matsushima, Tatsuya Momotani, and Kenji Utsunomiya
X3.69 |
Robert Weber, Zohre Adavi, and Masoud Mashhadi Hossainali
X3.70 |
Zohreh Adavi, Witold Rohm, and Robert Weber
X3.71 |
fangzhao zhang, jean-pierre barriot, and guochang xu
X3.72 |
Nabila Sofia Eryan Putri, Daniel Landskron, and Johannes Böhm
X3.73 |
Liu Xingwei, Pu Dexiang, Xu Chaoqian, and Gao Xiang
X3.74 |
Artur Lenczuk, Anna Klos, Krzysztof Pokonieczny, F. Norman Teferle, and Janusz Bogusz
X3.75 |
Qingchuan Zhang, Shengkai Zhang, Weifeng Hao, Jianguo Yan, Mao Ye, and Fei Li
X3.76 |
Andreas Wagner, Benjamin Fersch, Bettina Raible, and Harald Kunstmann
X3.78 |
Guanglang Xu, Antti Penttilä, Olli Wilkman, Olli Ihalainen, Maria Gritsevich, Jouni Peltoniemi, and Karri Muinonen
X3.80 |
Giovanna Venuti, Eugenio Realini, Giulio Tagliaferro, Andrea Gatti, Stefano Barindelli, Andrea Monti Guarnieri, Marco Manzoni, and Lisa Pertusini