The Synoptic Meteorology of High Rainfalls and the Storm Run‐Off Response in the Wet Tropics

Bonell, M.; Callaghan, Jeff

doi:10.1002/9781444300321.ch2

Cited by 9 publications

(18 citation statements)

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“…12 (e.g. Bonell et al 2005, and Bonell and Callaghan 2008. A physical understanding of this term can be obtained by considering the cross product of the upper and lower winds, which shows that the MTA magnitude increases with increasing wind speeds, but it is also modulated by the angle between the two winds.…”

Section: Towards a Quantitative Relationshipmentioning

confidence: 99%

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The turning winds with height thermal advection rainfall diagnostic: why does it work in the tropics?

Tory¹

2014

AMOJ

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Section: Towards a Quantitative Relationshipmentioning

confidence: 99%

“…Bonell et al 2005, and Bonell and Callaghan 2008. This uncertainty, coupled with a bit of healthy scepticism, led to the diagnostic being dubbed 'Snake Oil'.…”

Section: Introductionmentioning

confidence: 99%

The turning winds with height thermal advection rainfall diagnostic: why does it work in the tropics?

Tory¹

2014

AMOJ

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“…Goff and Hanson (2012) found this to be the case in the middle latitudes of the United States. Previous studies (Callaghan and Tory 2014, Tory 2014, Bonell and Callaghan 2008) examined winds associated with extreme rainfall in tropical cyclones and other weather systems in the tropics. They found, in the cases they examined, that extreme rainfall was associated with winds turning anti-cyclonically with height, between low levels and 500 hPa.…”

Section: Mechanisms Producing the Turning Wind Structurementioning

confidence: 99%

A vertical wind structure that leads to extreme rainfall and major flooding in southeast Australia

Callaghan¹,

Power²

2017

JSHESS

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Here we examine winds associated with extreme rainfall and major flooding in coastal catchments and more broadly over southeastern Australia. Both radiosonde and re-analysis data are examined. In every case (i) atmospheric moisture content is high and (ii) the low-level winds are onshore, and in almost every case (iii) the wind-direction turns anti-cyclonically with increasing height up to 500 hPa. Data from Brisbane extending back more than 50 years is consistent with this behavior: winds turn anti-cyclonically with increasing height on days with heavy rainfall, whereas winds turn cyclonically with increasing height on days with light or no rainfall. In the coastal zone, extreme rainfall rarely occurs without (i), (ii) and (iii). In eastern Australia beyond the coastal zone, conditions (i) and (iii) are also associated with extreme rainfall. We found very few cases where such conditions were not associated with extreme rainfall in this broader region. This study extends previous work by showing that the link between turning winds and rainfall exists in both the tropics and subtropics, and the link applies in cases of extreme rainfall and associated major flooding.

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“…The most extreme rain events are associated with tropical vortices (i.e. tropical depressions and the occasional more severe tropical cyclones) where certain upper atmospheric mechanisms occur (see detailed descriptions in Bonell and Callaghan 2008). Quite often >50% of the annual rainfall occurs in only a few days in this region.…”

Section: The Need For a More Innovative Experimental Design To Addresmentioning

confidence: 98%

“…Complete descriptions of these basins were given elsewhere Bonell 2004;Bonell and Callaghan 2008) and a snapshot of the satellite imagery connected with the above sustained rainfalls (Table 1) was in Fig. 4 of Manton and Bonell 1993.…”

Section: The Need For a More Innovative Experimental Design To Addresmentioning

confidence: 99%

The impacts of global change in the humid tropics: selected rainfall-runoff issues linked with tropical forest-land management

Bonell

2010

Irrig Drainage Syst

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Within the framework of IWRM, a major concern in the humid tropics is the effects of 'global warming' on the storm rainfall-runoff hydrology of both forests and converted forest lands. Further how such effects need to be incorporated within adaptive, forest-water-land management. But since the mid-20th century, dramatic changes in land-use (LU) and land cover (LC) have also occurred which have led to rapid rates of deforestation and an expansion of land-forest degradation. How much these man-induced impacts have been influential on climate -water relations, as against the effects of inherent climate variability and predicted climate change scenarios, still remains a major challenge to quantify. Thus embedded within the global warming issue are these additional LU/LC change impacts on climate-rainfall-storm runoff across scales which also require consideration under the broader mandate of 'global change'. The work will initially succinctly summarize the existing uncertainties linked with both Global Climate Models (GCMs). Subsequently more detailed attention will be given to uncertainties linked with LC/LU change. The experiences of hurricane Mitch in Central America will then set the scene for an alternative strategy. A principle message is a call for more concentrated research effort on geographically the outer margins of the 'maritime continent' (centred on the Indonesian Archipelago) in the Western Pacific where tropical cyclone frequency is very high. This region presents a diversity of socio-economies and an opportunity to produce adapted forest-land management measures in preparation for future global change (warming and anthropogenic). Such measures can then be extrapolated to currently less frequently, affected areas from extreme events like hurricane Mitch. Examples from research in the tropical-cyclone prone, "Wet Tropics" of Irrig Drainage Syst (2010) 24:279-325 northeast Australia linked with the management of tropical rainforests and the adjoining sugar cane lands are then used to demonstrate these opportunities.

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The Synoptic Meteorology of High Rainfalls and the Storm Run‐Off Response in the Wet Tropics

Cited by 9 publications

References 0 publications

The turning winds with height thermal advection rainfall diagnostic: why does it work in the tropics?

The turning winds with height thermal advection rainfall diagnostic: why does it work in the tropics?

A vertical wind structure that leads to extreme rainfall and major flooding in southeast Australia

The impacts of global change in the humid tropics: selected rainfall-runoff issues linked with tropical forest-land management

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