What's happened to temperatures over the last century, and how do we know?
Determining how temperatures, globally and in Australia, have changed over the last century may seem like a fairly straightforward matter.
Determining how temperatures, globally and in Australia, have changed over the last century may seem like a fairly straightforward matter.In this webinar, Blair will discuss the challenges in knowing exactly what has happened, including what data do (and do not) exist, how accessible they are, and what we do to take into account factors such as site moves and instrument changes over many years to make sure that the data are as consistent as possible.
Blair Trewin is a senior climatologist with the Bureau of Meteorology in Melbourne. He has been the lead scientist in the development of a number of long-term data sets used for monitoring climate in Australia, including the main Australian long-term temperature data set. He has served on a number of World Meteorological Organization working groups, including the Expert Team on Climate Change Detection and Indices, and was the scientific coordinator of the WMO's annual Statement on the Status of the Global Climate in 2010-11. He was President of the Australian Meteorological and Oceanographic Society in 2012-13, and is the editor of the Australian Meteorological and Oceanographic Journal.
Weblinks
For your interest here are some related web links from the AAMT Discussion List in July 2014
ABC 100 years of temperatures
http://www.abc.net.au/news/2014-07-09/100-years-of-temperatures/5582146
CSIRO State of the Climate report
http://www.csiro.au/Outcomes/Climate/Understanding/State-of-the-Climate-2012.aspx
(contributor Anthony Harradine)
Bureau of Meteorology
http://www.bom.gov.au/jsp/ncc/climate_averages/temperature/index.jsp
NOAA National Weather Service
http://www.expertglossary.com/weather/definition/mean-daily-temperature
(contributor Garry Webb)
