Call in Number: PARTICIPANT PASSCODE: PARTICIPANT ACCESS NUMBER: Toll Free: Toll: The presentations for the meeting on 11/20 are being posted at The next meeting Thursday December 4, in Rm am-noon (EST) Call in Number: PARTICIPANT PASSCODE: PARTICIPANT ACCESS NUMBER: Toll Free: Toll: Gert-Jam Marseille (KNMI) visit NCEP on Friday January 30. He will give a seminar at noon. We hope to have a meeting with him.

November 20, am-noon (EST) 1. Summary of progress in Joint OSSE (Michiko Masutani,NCEP) Agenda_ ppt 2. Calibration of simulated observation at GMAO and update of the software(Ron Errico, GMAO) Errico_081120_ncep2.ppt 3. Progress in simulation of observation and calibration at NOAA (Yuanfu-Xie, Nikki Prive ESRL) Prive_calib_nov20.v2.ppt 4. Future Nature runs (Michiko Masutani, NCEP) Future_NR.v8.ppt

Joint OSSE Photo Gallery Need more pictures.

OSSE capability for GNSS Radio-Occultation (RO) observations There are several options for a COSMIC follow-on mission (different orbit configuration, number of satellites, etc) What is the optimal “choice”? CEOS action WE on ‘evaluation of the requirements to conduct RO OSSEs’ The action has recently been completed –International Joint OSSE project –2-yr full time post-doctoral scientist Hopefully, we will get funding soon

Summary of the activities at the University of Utah Zhaoxia Pu, University of Utah ( Evaluation of the ECMWF natural runs 1. Winter storms in T511 * 13 major storms are identified over the Northern American Area * further Evaluation is in progress 2. Hurricanes in both T511 and T799 Regional OSSEs (Obs: DWL) A few issues: 1) model and data assimilation systems 2) boundary condition issues 3) hurricane intensity (resolution and validation issues)

My interest is essentially in conducting sensitivity analyses in data assimilation (currently global as oppose to regional). This work has only just begun. Am currently conducting an OSSE experiment consisting of (1) observation simulation using a nature run from our global model (set here for 120x240 horiz. resolution) and (2) conducting a few assimilations of this simulated dataset with and without one of the observation sources. The simulated obs consist of obs as used in weather forecasting (e.g. radiosondes, AMSU-A among others) plus a couple of additional stratospheric obs sources. For this first trial, the nature run is simply a model run covering 2.5 months and the assimilation uses this same model (realizing that this is far from the best choice but it's a first try) starting from different initial conditions than the model run. Will see what that gives. At some point in the future, I would like to take advantage of the nature runs to be made accessible from your joint OSSE program. Environment Canada Yves J. Rochon

Collaborating with NGIT and NASA on their Sensor Web simulations, t he Environmental Product Verification and Remote Sensing Testbed. EVEREST is a "world-class" end-to-end modeling and simulation testbed for assessing the performance of remote sensing systems. Initially developed to establish the pre-launch performance of the NPOESS weather satellite system, EVEREST consists of comprehensive environmental scenes, databases and validated state-of-the-science models for physics-based phenomenology, radiative transfer, sensors, spacecraft, and data product retrieval. The first practical demonstration of the collaboration between EVEREST and NGIT/NASA on Sensor Web simulations will likely be for the potential NASA-NOAA PATH (Precipitation and All-weather Temperature and Humidity) mission. The PATH mission involves having a microwave sounder in geostationary (GEO) orbit with a primary mission of observing hurricanes and severe storms at high spatial and temporal resolution. OSSE at Northrop Grumman NGC has completed file transfer for 1x1 data. NGC agreed to work on model resolution and working on file transfer for their focused period..

We are still looking for improved spatial and vertical resolution capability to enable a proper trade for GEO observations systems. Because of ambiguities in OSSE results it is hard to make a proper discrimination between what various hyperspectral, multi-spectral and MicroWave systems can offer. So perhaps we need to turn the problem around. We potentially have some funding to address this problem, the issue would be what kind of sounding OSSE would we need to do which would enable the best and most valid comparison of the above competing technologies? Or are we better off, just flying all of the systems and deciding afterward (obviously this would be significantly more expensive) Your thoughts would be greatly appreciated.Regards, David CrainITT Space Systems OSSE interest from ITT

Interest from NASA JPL As you probably know, JPL is involved in developing a number of satellite systems - in particular "Decadal Survey" missions. There is therefore strong interest in the topic of OSSE. However, people tend to take the "quick OSSE" route, and many people are not very familiar with how full OSSEs are done.

December 4, am-noon (EST) Tentative Agenda: 1. Simulation of DWL 1.1 Plans at KNMI 1.2Plans at SWA - A general overview of the DLSM as it currently is embedded in the Sensor Web Simulator; - A description of the way in which we use aerosols in the DWL simulations; - A description of how we handle clouds, including the use of GLAS and CALIPSO data to validate our simulated clouds. - The role of temperature information in the DWL simulations. - Our plans for simulating ADM (with input from the ADM team) products for ROSES07 effort (just recently started). 1.3 Plans at NASA 2. The fundamental principle of Joint OSSEs. (Tom Schlatter) Reference: Manuscript prepared by leaders of Joint OSSEs for "Data Assimilation: Making sense of observations", to be published from Springer in

Funding at KNMI After that I recently motivated to ESA that funds for KNMI to simulate ADM-Aeolus would be needed soon for the joint OSSE project, ESA replied that limited funding may be available in February. This implies for the teleconference planned on 4 December that KNMI cannot make strong commitments, but can make comments on the plan how to simulate DWL data and prepare for the 30 January visit of Gert- Jan. I provide this information to reconsider between us the need for and scope of the 4 December meeting. As you know, Gert-Jan and me discussed that it would still be of interest if he went to NOAA and the LWG in January, even when the funds for his DWL simulation work will not yet be secured. Last but not least, you may have heard that ESA considers a continuous mode Aeolus with a decision milestone in December. Anticipating on this decision, ESA planned a meeting with ECMWF, UKMO, DWD, KNMI and NOAA (Lars-Peter) in early February to discuss further evaluation studies of the continuous mode. In my view the joint OSSE would be a well set tool for this. Cheers, Ad