NORDIWA 2023

Hosseini, H. (presentatör)
Hashemi, H. (Roll ej angiven)
Larsson, R. (Roll ej angiven)
Olsson, J. (Roll ej angiven)
Aspegren, H. (Roll ej angiven)
Berndtsson, R. (Roll ej angiven)

Aktivitet: Deltagit i eller arrangerat evenemang › Deltagit i konferens

Beskrivning

Hasan Hosseini gave an oral presentation of the abstract "Swedish new radar system for enhanced urban stormwater management" on behalf of the listed authors.

Period	2023 sep. 5 → 2023 sep. 7
Typ av evenemang	Konferens
Plats	Göteborg, SverigeVisa på karta
Omfattning	Internationell

Dokument och länkar

Abstract title: Swedish new radar system for enhanced urban stormwater management ----------- Abstract text: More frequent torrential downpours and pluvial floods with climate change threaten the liveability of cities globally. Urbanization and densification of cities exacerbate the situation by more contribution and exposure to runoff. It is not only excess runoff but also more polluted water, e.g., from combined sewer overflows, that needs to be dealt with to avoid larger socio-economic and environmental losses than the present. However, spatiotemporal precipitation, especially for extreme events, can be highly variable and challenging to predict. Thus, high-resolution rainfall observations across time and area are becoming essential to managing stormwater flooding. The need is further emphasized for required less uncertainty in the prediction and control of peak flows in heterogenous urban catchments with dominant impervious surfaces. Both historical data and accurate nowcasting of local rainstorms are crucial for the design and real-time operation of many flood protection facilities, from pumping stations to nature-based solutions, or, when, e.g., certain parking lots and sports fields must be evacuated for collecting flood water as a secondary function. Other benefits can also be mentioned such as rainwater harvesting, design and maintenance of green roofs, and creation of innovative blue-green environments such as those in Gothenburg’s plan of becoming the world’s best “rainy city”. In view of the above, sub-km and minute rainfall observations were initiated through two operational ground-based scanning X-band weather radars (WRs) in south Sweden (Figure 1, and Hosseini et al., 2023). Although these resolutions are unique (vs. traditional rain gauges that are tedious and expensive to maintain), the remotely sensed data require extensive verifications and corrections. This study introduces the recent efforts in Sweden in this direction, which, for example, includes merging data from multiple-level scans of two X-band WRs using artificial neural networks. Also, a Micro Rain Radar (MRR) is analyzed for real-time correction of the X-band WRs. MRR more continuously (every 10 sec) monitors the vertical profile of rainfall to detect, among other things, hydrometeors’ melting layer, which can introduce considerable errors in the WRs scanning at certain elevation angles of the antenna. Although the technologies and research are mainly focused on Skåne, the developed methods can be generalized to other areas. The methods building on Artificial Intelligence (AI) solutions, e.g., can be expanded to other regions of Sweden or internationally to advocate consistent strategies towards more reliable flood protection of cities via new radar intelligence.

Relaterat innehåll

Forskningsoutput
Merging dual-polarization X-band radar network intelligence for improved microscale observation of summer rainfall in south Sweden
Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review
Evaluation of a new X-band weather radar for operational use in south Sweden
Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

NORDIWA 2023

Beskrivning

Dokument och länkar

Relaterat innehåll

Forskningsoutput

Merging dual-polarization X-band radar network intelligence for improved microscale observation of summer rainfall in south Sweden

Evaluation of a new X-band weather radar for operational use in south Sweden