Understanding Climate Risk

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Archive for August 19th, 2012

Perth morgues are full and SW WA has been unseasonally cold – coincidence?

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During the last weekend in July, Perth experienced an unusually high number of deaths, putting pressure on the state’s mortuaries. All facilities are full, according to the ABC.

Curiosity piqued, I checked Perth’s weather data for unseasonal cold. Sure enough, during June and July, Perth and the rest of south west WA had experienced cold conditions, not seen in Perth for 13 years and longer elsewhere. This linked article was published in mid July. In the last three weeks of July, daily temperatures were below 10 degrees on 3, 4 and 3 days, respectively preceding the last weekend of July.

Was it the the poor, the aged and the infirm filling the mortuaries, after repeated, unseasonal cold snaps? Has an overall warmer climate not insulated people from such events? The average temperature at Perth Airport is 13°C and for July was 11°C; perhaps there are some bad respiratory diseases around making things worse.

Perth average daily temperature June-July 2012, showing 10°C threshold

Cold remains dangerous for the vulnerable in southern winters. At this range of temperature, contrasts in temperature are the largest risk to vulnerable people, rather than absolute temperatures themselves.

Written by Roger Jones

August 19, 2012 at 11:46 am

2012 Marine Report Card

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Warmer oceans, tropical species being found further south, decline in temperate species, the first signs of CO2 effects on shell production in Australian waters …

These are a few of the headlines from the Marine Climate Change in Australia, Impacts and Adaptation Responses 2012 Report Card (download pdf). Put together by the Marine Biodiversity and Resources Adaptation Network (NCCARF), Fisheries Research and Development Corporation, and CSIRO’s Climate Adaptation Flagship. The reporting comprehensive,  covering the report card itself and six chapters on marine climate and thirteen on marine biodiversity. Alistair Hobday, summarising the report card on The Conversation.

Here’s a summary with some of my own conclusions about observed and projected changes. The latter you can take or leave as they’re based on my personal views about how climate changes. For recent and near future changes, I place a greater emphasis on how climate is likely to change rather than by how much. This places the emphasis more on the diagnosis and understanding of change rather than prediction. There’s a fair bit in doing this, so amongst other things I’m into today (like gardening, cooking and cleaning), I’ll update these sections as I go (Sunday 11 am, SST; Wednesday, SLR). Read the rest of this entry »