What you will find on this page: Special Climate Statement – exceptional heatAnnual Climate Statement 2016 (video); State of the Climate Report 2016 (video); record September rainsclimate zones on the move; Australia’s changing rainfall zones;  BOM UPDATES: ENSO Wrap-up (El Nino/La Nina); climate outlook update (video); climate outlook – monthly & seasonal; latest drought statement; heatwave outlook; Water in Australia 2014-2015 Report; monthly water update; Australian landscape water balance; Special Climate Statements

Where the rubber hits the road – what IS the weather doing?

The difference between weather and climate is a measure of time. Weather is what conditions of the atmosphere are over a short period of time, and climate is how the atmosphere “behaves” over relatively long periods of time. (NASA)

Understanding what drives climate in Victoria and how they are changing

The Climatedogs animation series is an award winning series of short animated videos produced by DEPI. The animations explain what drives the climate in Victoria, and how climate drivers are changing over time. Access here for more information

 

Another – Special Climate Statement 61—exceptional heat in southeast Australia in early 2017

22 February 2017 – Summer 2016–17 saw prolonged and, at times, extreme heat over New South Wales, southern Queensland, South Australia and parts of northern Victoria. January 2017 saw the highest monthly mean temperatures on record for Sydney and Brisbane, and the highest daytime temperatures on record for Canberra. In January and February, there were three distinct heatwaves in southeast Australia, with the highest temperatures recorded over 9–12 February 2017. The periods between the waves of extreme heat also saw above average temperatures over large areas of east and southeast Australia. It was the consistency of high temperatures more than the extreme temperatures themselves that made early 2017 an exceptional event. Access full report here

Annual Climate Statement 2016

 

State of the Climate Report – 2016 2015


The Bureau of Meteorology and CSIRO play an important role in monitoring, analysing and communicating observed changes in Australia’s climate. This fourth, biennial State of the Climate report draws on the latest monitoring, science and projection information to describe variability and changes in Australia’s climate, and how it is likely to change in the future. Observations and climate modelling paint a consistent picture of ongoing, long-term climate change interacting with underlying natural variability. Read more and to access full report here & access commentary here

 

Special Climate Statement 58 – record September rains continue wet period in much of Australia

12 October 2016: September was an exceptionally wet month over most of the eastern two-thirds of mainland Australia, as a succession of rain-bearing systems affected various parts of the continent. Monthly rainfall was at least double the long-term average over almost all of inland New South Wales and Queensland, most of the Northern Territory and outback South Australia, and parts of northern and western Victoria and eastern South Australia. Averaged over Australia as a whole, it was the second-wettest September on record, just behind September 2010. It was the wettest September on record for New South Wales and the Northern Territory, as well as for the Murray−Darling Basin, while it ranks second-wettest for Victoria, third-wettest for Queensland and fourth-wettest for South Australia. Access full report here

Climate Zones on the move

Rule of Thumb; For every one degree increase in global average temperature the climate zones can move 150kms.

Aust climate zones 1As the planet warms, Earth’s climate zones are shifting at an accelerating pace….The acceleration of change means that the species inhabiting each zone have less time to adapt to the climatic changes…. “The warmer the climate gets, the faster the climate zones are shifting.  This could make it harder for plants and animals to adjust.” Read More here & here

According to research in Nature Climate Changewith a warming of 2°C, about 5% of land would shift into a new climate zone. As the temperatures rise another 2°C, 10% of the land area shifts to a new zone.

The results of a study published in the journal Biological Conservation recently concluded that in Australia, the climate is warming to an extent that many specialised tree species that require cooler climates are struggling. Typically, these trees would start to shift to cooler environments, but as Craig Costion explained “they already live on mountain tops…they have no other place to go.”

Australia’s changing rainfall zones

Australia Changing climate zones

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Source: Australian Export Grains Innovation Centre

BOM Newsroom for latest weather alerts

The Bureau of Meteorology Newsroom has been designed to provide material that can be easily sourced and referenced by journalists in media coverage of weather, warnings and other information of public interest. Access Newsroom here

 

BOM ENSO Wrap-up

Latest BOM: Issued on 4 July 2017     Next issue: 18 July 2017

BOM Climate Outlook Update

BOM Climate outlooks – monthly and seasonal

Climate outlook overview (access full outlook here)Rainfall outlook map

  • July to September rainfall is likely to be below average over parts of southeastern and southwestern Australia.
  • July to September daytime and night-time temperatures are likely to be warmer than average for most of Australia. Chances are highest in the southeast and southwest, where there is a greater than 80% chance of warmer than average days and nights.
  • This outlook is influenced by higher than average pressure over southern Australia during July to September (see the Climate Influences section for more detail).

 

BOM Latest Drought Statement

The latest and full Drought Statement is now available on the Bureau’s website. Issued 4 May 2017

  • April rainfall was below average for much of Queensland, the Northern Territory, Tasmania and southwest Western Australia
  • Serious to severe rainfall deficiencies are present at the 3-month timescale in the Northern Territory into southwestern Queensland and surrounding areas
  • Soil moisture is below average across much of Queensland and western parts of the Northern Territory

 

 

BOM Heatwave Service for Australia

The Heatwave Forecast is a Bureau of Meteorology product that showsAust heat record high temp weather map the location of heatwaves, severe heatwaves and extreme heatwaves for the last two three-day periods and the next five three-day periods. It uses some analysis Numerical Weather Prediction model data, not the Official Forecast data. Please refer to official Bureau of Meteorology products for information on how hot each day and night will be during the three day period. Click on image to access BOM site.

April 2016: Just when we thought summer was coming to an end, a prolonged heatwave affected much of Australia during late February and March 2016. A Special Climate Statement includes information and maps about this extended heatwave.

It developed in northern Australia during the second half of February, where temperatures were well above normal from the second week of February onwards. For example, at Julia Creek in Queensland, a run of 21 consecutive days of 40 °C or above began on 12 February, peaking in the last few days of the month. Over the final fortnight of February, maximum temperatures were at least 2 °C above average over most of tropical Australia, and 4–6 °C above average over parts of northwestern Queensland. Read More in BOM’s  Special Climate Statement

 

Water in Australia – 2014-2015 BOM Report

State summary for all streamflow stations with valid data showing below average flows dominate in New South Wales, Tasmania, Victoria and Western Australia, while average flows dominate in Northern Territory and Queensland, and South Australia had a rough balance of average, above and below average flows in 2014-15.Water in Australia 2014–15 describes the characteristics of the country’s water resources, availability and use from 1 July 2014 to 30 June 2015 in the context of climatic conditions, and past water availability and use. In 2014–15, Australia generally experienced below-average rainfall (10 per cent less than the national average since 1910–11) with large seasonal and regional variation, including below-average rainfall throughout the east, and above-average rainfall in the central north, northwest and southeast. Mainly in the eastern parts of Australia, these patterns were influenced by near-El Niño conditions in spring 2014, evolving into El Niño by May 2015. Read More here

 

BOM Monthly Water Update

The BOM Monthly Water Update provides an overview of rainfall patterns and streamflow status across Australia. Rainfall is a key driver of streamflow and is shown alongside flows from over 222 gauging stations, across 9 of the 13 topographic drainage divisions in Australia. The Monthly Water Update interprets the hydrological status of surface water flows each month using provisional information from data providers.

 

BOM Australian Landscape Water Balance

Schematic of the modelled variables in the Australian Landscape Water BalanceDetails accessed through date and location – go here The landscape water balance is the sum of the hydrological processes that keep water moving through a landscape—recharging groundwater, filling streams and flushing water through wetlands. This water balance also determines how much moisture is in the soil—a vital input for seasonal planting and crop production decisions.