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

Hosseini, Hasan LU ; Hashemi, Hossein LU ; Berndtsson, Ronny LU ; South, Nicholas ; Aspegren, Henrik LU ; Larsson, Rolf LU ; Olsson, Jonas ; Persson, Andreas LU and Olsson, Lisa (2020) In Water Science and Technology 81(8). p.1623-1635
Abstract
The performance of a new type of X-band Weather Radar (WR) for Sweden during a pilot run is studied. Compared to the conventional C-band WRs, the X-band WR covers a smaller area but with a higher spatiotemporal resolution, making it suitable for urban hydrological applications. Rainfall estimations from different elevation angles of the radar (levels) are compared at one-minute and single-event timescales with the observations of several rain gauges at different ranges using hyetographs. In general, the estimations aligned well with observations and the best match appeared for ranges as long as 5–10 km. Seemingly, radar estimations suffered from overshooting of lower lying showers by higher level scans in longer ranges (19–30 km) and from... (More)
The performance of a new type of X-band Weather Radar (WR) for Sweden during a pilot run is studied. Compared to the conventional C-band WRs, the X-band WR covers a smaller area but with a higher spatiotemporal resolution, making it suitable for urban hydrological applications. Rainfall estimations from different elevation angles of the radar (levels) are compared at one-minute and single-event timescales with the observations of several rain gauges at different ranges using hyetographs. In general, the estimations aligned well with observations and the best match appeared for ranges as long as 5–10 km. Seemingly, radar estimations suffered from overshooting of lower lying showers by higher level scans in longer ranges (19–30 km) and from the reflectivity contamination due to moving objects in short ranges (<1 km). Also, the effective range of the radar dropped sharply for the moments when a cloudburst was located over the radar. Although various sources of error could affect the X-band WR rainfall estimates, higher resolution spatiotemporal rainfall monitoring for wider areas will benefit from an integration of data from a network of X-band WRs. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Water Science and Technology
volume
81
issue
8
pages
1623 - 1635
publisher
IWA Publishing
external identifiers
  • scopus:85087807516
  • pmid:32644956
ISSN
0273-1223
DOI
10.2166/wst.2020.066
language
English
LU publication?
yes
id
90044bcf-7e32-4367-a5f3-b2e5caed87a1
date added to LUP
2020-04-30 11:07:40
date last changed
2020-10-07 06:58:12
@article{90044bcf-7e32-4367-a5f3-b2e5caed87a1,
  abstract     = {The performance of a new type of X-band Weather Radar (WR) for Sweden during a pilot run is studied. Compared to the conventional C-band WRs, the X-band WR covers a smaller area but with a higher spatiotemporal resolution, making it suitable for urban hydrological applications. Rainfall estimations from different elevation angles of the radar (levels) are compared at one-minute and single-event timescales with the observations of several rain gauges at different ranges using hyetographs. In general, the estimations aligned well with observations and the best match appeared for ranges as long as 5–10 km. Seemingly, radar estimations suffered from overshooting of lower lying showers by higher level scans in longer ranges (19–30 km) and from the reflectivity contamination due to moving objects in short ranges (&lt;1 km). Also, the effective range of the radar dropped sharply for the moments when a cloudburst was located over the radar. Although various sources of error could affect the X-band WR rainfall estimates, higher resolution spatiotemporal rainfall monitoring for wider areas will benefit from an integration of data from a network of X-band WRs.},
  author       = {Hosseini, Hasan and Hashemi, Hossein and Berndtsson, Ronny and South, Nicholas and Aspegren, Henrik and Larsson, Rolf and Olsson, Jonas and Persson, Andreas and Olsson, Lisa},
  issn         = {0273-1223},
  language     = {eng},
  month        = {02},
  number       = {8},
  pages        = {1623--1635},
  publisher    = {IWA Publishing},
  series       = {Water Science and Technology},
  title        = {Evaluation of a new X-band weather radar for operational use in south Sweden},
  url          = {http://dx.doi.org/10.2166/wst.2020.066},
  doi          = {10.2166/wst.2020.066},
  volume       = {81},
  year         = {2020},
}