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Welcome to the Joint Center for Satellite Data Assimilation (JCSDA)

JCSDA 13th Workshop Group Photo May 2015

Evaluation and Improvement of Land Surface States and Parameters To Increase Assimilation of Surface-Sensitive Channels and Improve Operational Forecast Skill

Land surface models (LSMs) exist within a wide spectrum of complexity. Current NOAA/NCEP/EMC LSMs, such as the Noah LSM, use a bulk surface treatment, meaning the vegetation, snow, and soil surface are treated as a combined unit with one surface temperature. Bulk LSMs have been effective at providing accurate lower boundary condition fluxes of heat and water to the atmosphere in operational settings.

Recent LSM developments such as the Noah-MP LSM consider a more process-based approach, with multi-layer snow packs and explicit vegetation canopies that have dynamic growth. These new LSMs can more accurately simulate situations when surface heterogeneities exist (e.g., canopy overlying snow), provide more detailed information about individual land surface processes (e.g., multiple surface temperatures), and may increase the assimilation of atmospheric and land surface observations to enhance model performance. Read more...

Dr. Thomas Auligné
Joins JCSDA as New Director

photo: Dr. Thomas Auligne 05.12.2015
Dr. Thomas Auligné began his tenure as the JCSDA Director on May 1. Since 2007, Dr. Auligné had been a Project Scientist at the National Center for Atmospheric Research in Boulder, CO. There, Dr. Auligné worked exclusively on improving the data assimilation and Numerical Weather Prediction (NWP) capabilities impacting both the broader research community as well as operational data assimilation systems at several JCSDA partner institutions. Much of his focus has been on the assimilation of cloud (and precipitation) impacted satellite observations. For a number of years, Dr. Auligné led the effort to develop the Air Force Weather Agency (now the 557th Weather Wing) Coupled Assimilation and Cloud Prediction System (ACAPS), which aims to provide cloud analysis and forecast capabilities based on NWP. Recently Dr. Auligné has also worked on a multivariate minimum residual method to improve and increase the number of assimilated Infrared (IR) satellite radiance observations, through the retrieval of cloud fraction profiles implemented in the Weather Research and Forecasting model and data assimilation system (WRF-DA). This technique was also extended for short- term forecasting of clouds for both aviation and solar energy applications. Additionally, Dr. Auligné developed the Ensemble-Variational Integrated Localized (EVIL) algorithm implemented in the Gridpoint Statistical Interpolation (GSI) data assimilation application for National Oceanic and Atmospheric Administration / National Weather Service (NOAA/NWS).

In the years leading up to his work at NCAR, Dr. Auligné earned his M.S. degree in Meteorology from the École Nationale de la Météorologie in Toulouse, France. Dr. Auligné earned his Ph.D in Atmospheric Physics from the Paul Sabatier University, also in Toulouse. Dr. Auligné has held positions at both Météo- France and the European Centre for Medium-Range Weather Forecasts (ECMWF), focusing on assimilation of the first hyperspectral IR sensor (AIRS) and satellite radiance variational bias correction schemes, respectively. At NCAR, he also collaborated on many other projects, including the development of a variational field alignment algorithm to resolve displaced cloud fields between the model background and satellite observations, as well as an observation impact diagnostic tool based on adjoint sensitivity. Dr. Auligné is also dedicated to outreach in the atmospheric science community, mentoring several students and postdocs, participating and lecturing in various data assimilation tutorials, and organizing several conferences and workshops.

Dr. Auligné is an outdoor sports enthusiast who enjoys mountain biking, canyoneering, and kiteboarding, to name a few hobbies. He is also an avid world traveler, having visited over 60 countries. Dr. Auligné and his wife Synthia have two boys: Eliot (4) and Teiva (2).

Please join us in wishing Dr. Auligné much success as Director of the JCSDA!

The JCSDA Summer Colloquium
on Satellite Data Assimilation

The NASA/NOAA/DoD Joint Center for Satellite Data Assimilation (JCSDA) is pleased to announce a Summer Colloquium on Satellite Data Assimilation in 2015 engaging graduate students and individuals with early postdoctoral appointments in the science of data assimilation for the atmosphere, land and oceans. The program will include internationally recognized experts in data assimilation, satellite data use and assimilation, along with opportunities for students to interact with the lecturers in an informal setting. For more on the Colloquium, including how to apply, visit the Colloquium webpage. The deadline to apply for the Colloquium has been extended to April 30, 2015.

Data Assimilation Changes in the January 2015 GFS Model Upgrade at NOAA

On January 14, 2015, an operational upgrade to the NOAA National Centers for Environmental Prediction (NCEP) Global Forecast and Analysis (GFS/GDAS) was implemented. The forecast model has been changed significantly, most notably by a change from Eulerian to Semi-Lagrangian dynamics and an increase in resolution from Eulerian T574 (~27 km) to Semi-Lagrangian T1534 (~13 km). Read more...

JCSDA 2015 Federal Funding Opportunity, Deadline Extended

The deadline for the JCSDA 2015 Federal Funding Opportunity (FFO) has been extended from January 15, 2014 to January 26, 2014. The call is for proposals for scientific projects in a variety of areas related to satellite data assimilation, including cloudy/rainy radiance data assimilation, optimization of satellite data assimilation, and improvement of the Community Radiative Transfer Model (CRTM). Applicants are encouraged to submit letters of intent. For more information, please see the full FFO.

Dr. Hendrik Tolman Named to the JCSDA Executive Team

photo: Dr. Hendrik Tolman11.11.2014

The JCSDA Management Oversight Board announced the nomination and unanimous approval of Dr. Hendrik Tolman to serve as the JCSDA Associate Director for the NWS. Dr. Tolman has also been very recently appointed as the new director of the NCEP/EMC. Prior to that, Dr. Tolman served as the Branch Chief of the Marine Modeling and Analysis Branch (MMAB) of the Environmental Modeling Center (EMC) of NCEP.

Please join us in congratulating Hendrik!

JCSDA Partner Activities Toward the Assimilation of GPM Observations: GPM Data Assimilation Status and Plans: Update from NASA/GMAO

Scientists at the Global Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center are investigating the assimilation of Global Precipitation Mission (GPM) Microwave Imager (GMI) radiance measurements. Current efforts are expanding the all-sky (clear, cloudy, and precipitating) data assimilation methodology under development in the GSI system while also determining how the system is reacting to the assimilation of only clear-sky observations. The ultimate goal is to routinely assimilate these data to improve weather forecasts including severe storms and hurricanes as well as to improve global cloud and precipitation analyses.


2014 JCSDA News Items....

Modified June 29, 2015 7:06 PM
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