Joint OSSEs

	Joint OSSE is the international effort for collaborative OSSEs, where many centers share the same Nature Runs (NRs) to conduct OSSEs with different data assimilation systems. Verification of the NR and simulation of observations consumes a significant amount of resources. If the same NRs are used the results can be compared and the performance of reliable OSSEs will be faster.
	Overview NCEP note 473 based on the White paper on OSSE Optimized Modelling submitted to the Arctic Observing Summit (AOS), Vancouver, Canada (April 30 to May 2, 2013) Brief summary of Progress in Joint OSSE as of January 2013 and potential OSSE for Arctic Observing Systems. (to be submitted to Ambio,Springer) Progress (February 2012) Simulated observation Progress (June 2011) Joint OSSE Nature runs Data Distribution Description of the Joint OSSE data \| Joint OSSE Nature Run (Need account)\| Shared data (contact owners for the detail) Joint OSSE Publications (updated October 2013) Joint OSSE presentations References Related presenations Discussion forums FAQ and help Manuals, notes, and Software Meeting Summary, Records and notes



	Obituaries of DezsőDévényi He attended Joint OSSE meetings regularly. This is a great loss to Joint OSSE. Message from friends and colleagues

Joint OSSE Photo Gallery 1 Joint OSSE Photo Gallery 2	NASA/GSFC/GMAO OSSE	NASA/GSFC/SIVO OSSE
THORPEX OSSE	North Americal Regional THORPEX	WMO THORPEX

Overview