China Blue High-Definition (CBHD) (Chinese: 中国蓝光高清光盘) (China High Definition DVD) is a high definition optical disc format announced in September 2007 by the Optical Memory National Engineering Research Center (OMNERC) of Tsinghua University in China. The format is a derivative of the HD DVD, a medium created by the DVD Forum designed to succeed regular DVDs. Although HD DVD was scrapped as a result of losing the format war to Blu-ray, CBHDs continued to be produced and marketed, though only in China.

Originally called CH-DVD, CBHD is a joint venture between the DVD Forum and OMNERC. Development began in 2005, and an early prototype was demonstrated in 2007. In 2008 during the DVD Forum's 42nd Steering Committee Meeting, the DVD Forum gave OMNERC the ability to edit HD DVD specifications.

Development of CBHD, heavily based on the HD DVD standard, was greatly helped by Japanese engineers. In particular, Hisashi Yamada, former Chief Technology Fellow at Toshiba's Digital Media Network, often referred to as the "father of DVD," has played a key role in China's plan to create its own high-definition consumer video format.

David Arfon Jones is a senior climatologist and current Head of the National Climate Centre at the Australian Bureau of Meteorology.

He initially studied mathematics and chemistry at university but changed to atmospheric studies. Jones obtained his PhD in Earth Science from the University of Melbourne, Australia in 1995. He subsequently completed the postgraduate diploma in weather forecasting in 1995 at the Bureau of Meteorology. In 1995 Jones commenced work in the Climate Analysis Section of the Australian National Climate Centre, focusing on the automation of climate monitoring using objective analysis techniques. Subsequently he moved to the Bureau of Meteorology Research Centre in 1997 undertaking research on the variability and change of Australia's climate.

Jones became the supervisor of Climate Analysis at the Bureau of Meteorology in 2002. In this role he has promoted the automation of analysis, monitoring and forecasting products and the introduction of a range of innovative climate monitoring activities, with a focus on encouraging the interpretation of climate variability in the context of a rapidly changing climate.