The Application of Barnes Filter to Positioning the Center of Landed Tropical Cyclone in Numerical Models
Joint Authors
Zou, Haibo
Wu, Shanshan
Yi, Xueting
Wu, Nan
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-02-13
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
After a tropical cyclone (TC) making landfall, the numerical model output sea level pressure (SLP) presents many small-scale perturbations which significantly influence the positioning of the TC center.
To fix the problem, Barnes filter with weighting parameters C=2500 and G=0.35 is used to remove these perturbations.
A case study of TC Fung-Wong which landed China in 2008 shows that Barnes filter not only cleanly removes these perturbations, but also well preserves the TC signals.
Meanwhile, the centers (track) obtained from SLP processed with Barnes filter are much closer to the observations than that from SLP without Barnes filter.
Based on the distance difference (DD) between the TC center determined by SLP with/without Barnes filter and observation, statistics analysis of 12 TCs which landed China during 2005–2015 shows that in most cases (about 85%) the DDs are small (between −30 km and 30 km), while in a few cases (about 15%) the DDs are large (greater than 30 km even 70 km).
This further verifies that the TC centers identified from SLP with Barnes filter are more accurate compared to that directly obtained from model output SLP.
Moreover, the TC track identified with Barnes filter is much smoother than that without Barnes filter.
American Psychological Association (APA)
Zou, Haibo& Wu, Shanshan& Yi, Xueting& Wu, Nan. 2018. The Application of Barnes Filter to Positioning the Center of Landed Tropical Cyclone in Numerical Models. Advances in Meteorology،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1118632
Modern Language Association (MLA)
Zou, Haibo…[et al.]. The Application of Barnes Filter to Positioning the Center of Landed Tropical Cyclone in Numerical Models. Advances in Meteorology No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1118632
American Medical Association (AMA)
Zou, Haibo& Wu, Shanshan& Yi, Xueting& Wu, Nan. The Application of Barnes Filter to Positioning the Center of Landed Tropical Cyclone in Numerical Models. Advances in Meteorology. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1118632
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118632