# Presentation: 451787

## Joint Center for Satellite Data Assimilation(NASA, NCEP, NESDIS, OAR)

- Louis W. Uccellini
- Director, NCEP
- November 29, 2001

##  Motivation

- Under utilization of existing satellite data
- Preparation for future data
- Much higher data volume
- Reduce time from launch to application
- End-to-end instrument design and application
- Integration of multi-agency resources
- Consistent with existing science funding and management structure

##  5-Order Magnitude Increase in Satellite Data Over Next 10 Years 

** **

- Year

- Count (Millions)

- Daily Upper Air Observation Count

- Year

- Satellite Instruments  by Platform

- Count

**NPOESS**
**METEOP**
**NOAA**
**Windsat**
**GOES**
**DMSP**

- 1990

- 2010

- 2000

- 1990

- 2010

- 2010-250ch

- Year

**Notes:**
Currently, we use ~105 observations per day in operational models out of total of more than 106.  There are estimated to be ~1011 observations per day by 2010.  This estimate does NOT include GIFTS or Doppler Wind Lidar.   This volume of data is outside our current capacity and design bracket for most data assimilation systems. 

Last column represents using 10 percent of the data volume (note logarithmic scale).  That is what feasible for scientific and logistical reasons.

Note that the ordinate in the left panel has a logarithmic scale.

## Addressing the End-to-End Process

**Definition of scientific and operational requirements**
** ****Observing System Simulation Experiments (OSSE’s)**
** ****On orbit instrument characterization**
** ****Instrument calibration and data validation**
** ****Algorithum development, data analysis, and instrument validation**
** ****Forward model development**
** ****Data assimilation and numerical modeling**
** ****Research applicatopns and forecast assessment**
** ****Delivery of model results to the user community**
** ****Computational resources and system engineering**
** ****Data flow and archival requirements**

- NASA and NOAA scientist and managers should be involved in an end-to-end process, from defining an instrument, to characterizing that instrument’s in flight performance, to integrating the data into NOAA operational products, and to assessing its impact on forecast.  The process includes the following:

- To cover the entire process, the two agencies must work together and share costs, not only in defining requirements for a given satellite instrument, but also in developing the infrasture needed to collect, process, and assimilate data in the numerical forecast models.

## NASA-NOAA Joint Center for Satellite Data Assimilation

**  ****A virtual center comprised of scientists from NASA DAO,  NCEP EMC, NESDIS ORA and OAR Labs...**
- Develop a community-based fast forward radiative transfer model and common data assimilation infrastructure to prepare for next-generation sensors launched by NASA, NOAA, DOD and international agencies
- Provide a community interface for accelerated transition of research and technology in satellite data assimilation in support of NASA, NOAA missions

## NASA-NOAA Joint Center for Satellite Data Assimilation

**  ****A virtual center comprised of scientists from NASA DAO, NCEP EMC, NESDIS ORA and OAR Labs...**
- Use a common model and data assimilation infrastructure for:
- Accelerated development of assimilation algorithms for current operational soundings
-  GOES, POES, DMSP
- Rapid assimilation of research satellite data into operational models
-  QuickSCAT, TRMM, MODIS
-  AIRS, IASI, CrIS, ATMS, VIRS, GIFTS
- Set scientific and operational requirements for future sensors through coordinated Observing System Simulation Experiments (OSSE)

## JCSDA Organization Chart 

**  **
**	**

**NASA & NOAA**

**Joint Oversight Board**
**Directors of:**
- Goddard ESD: F. Einaudi (Chair)
- NOAA NCEP: L. Uccellini
- NOAA ORA: M. Colton
- NOAA OWAQR: D. Rogers

**Joint Center Staff**
- Center Director: Richard Rood (Acting)
- Deputy Director: Stephen Lord (Acting)
- Technical Liaisons:
- DAO – L.-P. Riishojgaard
- EMC – J. Derber
- NSIPP – M. Rienecker
- OWAQR – A. Gasiewski
- ORA – D. Tarpley
- Senior Scientist – TBD
- Contractor Support:  George Ohring (NESDIS)
- Secretary

**Advisory**
**Panel**

**Rotating Chair**
**Between NASA, NOAA**

**Science**
**Steering**
**Committee**

## JCSDA: External Advisors

- _Science Steering Committee_
- P. Menzel (Chair)
- R. Atlas
- C. Bishop
- C. Chouinard
- A. McNally
- T. Sclatter

- _Advisory Panel_
- To be decided by the joint oversight board:  proposed names
**Tony Hollingsworth**
**Andrew Lorenc**
**Phillippe Courtier**
**Michael Ghil**
**Eugenia Kalnay**
**Rick Anthes**
**Jim Purdom**
**T.N. Krishnamurti**
**Joe Friday**
**Julian Hunt**
**Tom van der Haar**
**M. Berand**

##  Scientific Projects under JCSDA 

- Quikscat Winds
- Retested with neutral to slightly positive impact
- Quikscat ready for operational implementation
- TRMM Precipitation Estimates
- Tested and found to be useful supplement to SSM/I data
- Operational use in NCEP models commenced on October 3, 2001

##  Scientific Projects under JCSDA 

- AMSU radiances
- AMSU-A used operationally since March 1999 AMSU-B used operationally since February 2001
- Statistical correction for cloud liquid water sensitivity being evaluated
- GOES radiances
- Used operationally in both regional (since Sept., 2000) and global systems (since 1998)
- New project to use imager radiances for improved moisture analysis

##  Ongoing Activities 

- AIRS Preparation:  implement JCSDA community fast radiative transfer model in NCEP global data assimilation system
- “Ready for Launch” – May 2002 ?
- MODIS:  Possible for cloud clearing
- Implement advanced microwave emissivity model: Microwave radiance usage over land
- OSSE: Wind Lidar evaluation

##  Issues 

- Budget allocation over long term
- Computing resources
- Involving larger model community
- DoD
- International
- Better Connection to NPOESS

## Summary 

- NASA and NOAA recognize the need to work together to develop an end-to-end process for maximizing the use of satellite data in weather forecast models
- The NASA-NOAA Joint Center for Satellite Data  Assimilation (JCSDA) provides the _bridge_ for making the transition from research to operations, as well as engaging the larger research community
- Establishment of the JCSDA must be recognized as a cornerstone for maximizing the U. S. investment in space  as part of an advanced global observing system
- Increasing urgency to expand partner list within domestic and international modeling communities