BARRA v1.0: the Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia

Chun-Hsu Su, Nathan Eizenberg, Peter Steinle, Dörte Jakob, Paul Fox-Hughes, Christopher J. White, Susan Rennie, Charmaine Franklin, Imtiaz Dharssi, Hongyan Zhu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia (BARRA) is the first atmospheric regional reanalysis over a large region covering Australia, New Zealand, and Southeast Asia. The production of the reanalysis with approximately 12 km horizontal resolution – BARRA-R – is well underway with completion expected in 2019. This paper describes the numerical weather forecast model, the data assimilation methods, the forcing and observational data used to produce BARRA-R, and analyses results from the 2003–2016 reanalysis. BARRA-R provides a realistic depiction of the meteorology at and near the surface over land as diagnosed by temperature, wind speed, surface pressure, and precipitation. Comparing against the global reanalyses ERA-Interim and MERRA-2, BARRA-R scores lower root mean square errors when evaluated against (point-scale) 2 m temperature, 10 m wind speed, and surface pressure observations. It also shows reduced biases in daily 2 m temperature maximum and minimum at 5 km resolution and a higher frequency of very heavy precipitation days at 5 and 25 km resolution when compared to gridded satellite and gauge analyses. Some issues with BARRA-R are also identified: biases in 10 m wind, lower precipitation than observed over the tropical oceans, and higher precipitation over regions with higher elevations in south Asia and New Zealand. Some of these issues could be improved through dynamical downscaling of BARRA-R fields using convective-scale (<2 km) models
LanguageEnglish
Pages2049-2068
Number of pages20
JournalGeoscientific Model Development
Volume12
Issue number5
DOIs
Publication statusPublished - 24 May 2019

Fingerprint

Meteorology
meteorology
High Resolution
Precipitation (meteorology)
Wind Speed
surface pressure
wind velocity
Mean square error
Temperature
Gages
Data Assimilation
temperature
downscaling
data assimilation
Satellites
Weather
Ocean
Forcing
Completion
Forecast

Keywords

  • reanalysis
  • Australia
  • climate
  • weather
  • atmosphere/land-surface exchange
  • extreme events

Cite this

Su, Chun-Hsu ; Eizenberg, Nathan ; Steinle, Peter ; Jakob, Dörte ; Fox-Hughes, Paul ; White, Christopher J. ; Rennie, Susan ; Franklin, Charmaine ; Dharssi, Imtiaz ; Zhu, Hongyan. / BARRA v1.0 : the Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia. In: Geoscientific Model Development. 2019 ; Vol. 12, No. 5. pp. 2049-2068.
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Su, C-H, Eizenberg, N, Steinle, P, Jakob, D, Fox-Hughes, P, White, CJ, Rennie, S, Franklin, C, Dharssi, I & Zhu, H 2019, 'BARRA v1.0: the Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia' Geoscientific Model Development, vol. 12, no. 5, pp. 2049-2068. https://doi.org/10.5194/gmd-12-2049-2019

BARRA v1.0 : the Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia. / Su, Chun-Hsu; Eizenberg, Nathan; Steinle, Peter; Jakob, Dörte; Fox-Hughes, Paul; White, Christopher J.; Rennie, Susan; Franklin, Charmaine; Dharssi, Imtiaz; Zhu, Hongyan.

In: Geoscientific Model Development, Vol. 12, No. 5, 24.05.2019, p. 2049-2068.

Research output: Contribution to journalArticle

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AU - Su, Chun-Hsu

AU - Eizenberg, Nathan

AU - Steinle, Peter

AU - Jakob, Dörte

AU - Fox-Hughes, Paul

AU - White, Christopher J.

AU - Rennie, Susan

AU - Franklin, Charmaine

AU - Dharssi, Imtiaz

AU - Zhu, Hongyan

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KW - reanalysis

KW - Australia

KW - climate

KW - weather

KW - atmosphere/land-surface exchange

KW - extreme events

UR - https://www.geoscientific-model-development.net/index.html

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