Applications are invited for a Visiting scientist Activity to be funded by the H-SAF Consortium.
Research Fields: Precipitation, Microvawe, Satellite radar, validation, Scientific computing and data processing
HSAF Science Coordinator
Maj. Davide MELFI
Italian Air Force Meteorological Service
Centro Operativo per la Meteorologia
Beneficiaries: Dipartimento della Protezione Civile (DPC), Istituto di Scienze dell'Atmosfera e del Clima (CNR-ISAC) di Roma
Benefits and salary: The financial contribution to a VSA can only consist of, cost reimbursement on a per diem basis (VS), contribution to salary costs (AS) and travel cost reimbursement. Other costs e.g. hardware, equipment, third party services, cannot be charged to the VS programme.
The total cost of the activity will depend by the work plan proposed by the attender (see below) and it can’t exceed 20000 Euros.
Eligibility criteria: Only experts/scientists from entities (NMSs or other public Institutions e.g. Universities or Research Centres) not involved in the concerned SAF cooperating entities’ organization or their controlled sub-entities can be selected as VS.
· Conditions of international mobility of researchers: Researchers are required to undertake transnational mobility (i.e. move from one country to another) when taking up the appointment.
Recruitment procedure: Description of the motivation and expected objective of the proposal are described below
Applications must include:
- Proposal for the activity (estimated duration, tentative of workplan, etc. – click here for a template)
- copy of valid identity documents
Applications has to be completed by 10 November 2016, although the search will continue until the positions is filled.
Project Abstract: In the H-SAF context instantaneous and accumulated precipitation products are usually validated with respect to ground radar and rain gauge data on the European area. Nevertheless, other satellite products, as GPM ones, may be suitable for independent inter-comparison and algorithm tests. This is particularly true in the African region where ground-based measurements are sparse or not available. In the H-SAF CDOP-2 and CDOP-3 proposal it has been proposed to use GPM Dual-frequency Precipitation Radar (DPR) (Ku and Ka band), and, in particular, of NASA/JAXA DPR products, to carry out extensive validation of H-SAF instantaneous precipitation products over the MSG full disk area. The DPR have the great advantage of providing global and consistent observations over the globe, including oceans and mountainous areas (not affected by beam blocking), and remote areas where ground-based precipitation measurements are scarce or not available. However, DPR measurements are affected by other limitations, such as attenuation, ground clutter, Non-Uniform Beam Filling (NUBF), and multiple scattering. These effects are taken into account in the NASA/JAXA algorithms used to deliver DPR precipitation products, but the surface precipitation estimates are affected by errors that need to be quantified.
Thanks to the involvement of H-SAF consortium members in the Precipitation Measuring Mission (PMM) Science Team through the no-cost collaboration proposal “H-SAF and GPM: precipitation algorithm development and validation activity“ (PIs: Giulia Panegrossi, ISAC-CNR and Silvia Puca, DPC), approved by the NASA PMM Research Program and endorsed by EUMETSAT, a scientific collaboration is ongoing both on validation activities and precipitation retrieval algorithm development. Close interactions with the developers of NASA/JAXA products are therefore possible, and would allow a deep knowledge of the problems and limitations of DPR precipitation products.
A Visiting Scientist Activity (VSA) is proposed to define potentials and limitation in the use of GPM-DPR products for validation, and to delineate the best strategy to be used for the validation of precipitation products over the MSG full disk. Such strategy might be potentially adopted for intercomparison of products among the SAFs. The proposed work will be a valuable contribution of H-SAF towards the assessment of GPM product quality over complex territories, such as Italy, within the collaboration with the GPM. A ground network composed by 16 C-band radar and 2000 rain gauges is used at the Italian Civil Protection to estimate in near real time the ground precipitation.