<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Dear Colleagues,</div><div><br></div><div>We would like to invite you to join us at the CEDAR workshop addressing <b>Calibration and analysis techniques for passive optical and lidar observations</b> that will be held on Thursday from 10 AM - noon in Kane 110. A description of the workshop is below. Please let us know if you would like to make a short presentation. We especially welcome student participation in our workshop.</div><div><br></div><div>Susan Nossal (<a href="mailto:nossal@physics.wisc.edu" target="_blank">nossal@physics.wisc.edu</a>)</div><div>Jeff Baumgardner (<a href="mailto:jeffreyb@bu.edu" target="_blank">jeffreyb@bu.edu</a>)</div><div>Don Hampton (<a href="mailto:dhampton@gi.alaska.edu" target="_blank">dhampton@gi.alaska.edu</a>)</div><div><br></div><div><h2><span>Calibration and analysis techniques for passive optical and lidar observations</span></h2><div>Accurate calibration is important for inter-comparison of observations, data/model comparisons, and long-term investigations. We invite discussion on a broad range of topics relating to passive optical and lidar observations and their analysis. Possible topics include absolute and relative intensity calibration, wavelength calibration, spatial scale determination, error analysis, correction for scattering within the lower atmosphere, isolation of atmospheric lines of interest, flat field techniques, spectral fitting approaches, and analysis of long term data sets. In addition to reporting progress on calibration and analysis techniques, this workshop provides an opportunity to discuss challenges and gain feedback from other workshop participants. We encourage hands-on demonstrations. In addition, we welcome modelers to discuss use of observations for model-data comparisons, and associated questions and challenges for model validation. We welcome and encourage presentations by students. </div></div><div><br></div></body></html>