The past two decades, 1990-2010, have been something of a \u201cgolden age\u201d for stratospheric chemical observations. The Odin satellite from SNSB, the ENVISAT mission from ESA and NASA missions UARS and EOS-Aura have provided an unprecedented coverage (spatial, temporal) of the stratosphere chemistry and dynamics. These missions were designed with a focus on addressing the effect of man-made changes in atmospheric composition and its implication to climate change. These missions have provided measurements of a large number of chemical species, both long-lived and short-lived, that are critical to conduct scientific studies. The integration of measurements and atmospheric predictive models can be done through a technique known as data assimilation. It is quite remarkable that although data assimilation has been applied to a wide range of geophysical problems, the assimilation of those observations into chemical transport models has been rather scarce and has hindered the additional value those observations could provide.<\/p>\n
This team brings scientists from observation studies, chemical modeling and processes, and data assimilation experts together to answer the question: \u201cWhat is the added value of stratosphere and upper-troposphere chemistry data assimilation\u201d.<\/p>\n
* The animation above shows the evolution of Ozone at 520 K between Sept 1 to 30, 2008 with a frequency of 6 hours from Aura MLS Observations (left), BASCOE 4D-Var analysis (center) and BASCOE CTM run (right). Color ranges are from 0 (blue) to 4 (red) ppmv.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":" The past two decades, 1990-2010, have been something of a \u201cgolden age\u201d for stratospheric chemical observations. The Odin satellite from SNSB, the ENVISAT mission from ESA and NASA missions UARS and EOS-Aura have provided an unprecedented coverage (spatial, temporal) of … Continue reading