# Presentation: 543901

## AIRS Science Team MeetingM. ChahineMarch 30, 2004

## New Science Team

## AIRS SURFACE TEMPERATURE

**C. Thompson, E. Olsen**

## AIRS SURFACE TEMPERATURE

**C. Thompson, E. Olsen**

## AIRS UPPER ATMOSPHERIC MOISTURE

**C. Thompson, E. Olsen**

## AIRS UPPER ATMOSPHERIC MOISTURE

**C. Thompson, E. Olsen**

## AIRS TOTAL WATER VAPOR

**C. Thompson, E. Olsen**

## AIRS TOTAL WATER VAPOR

**C. Thompson, E. Olsen**

## AIRS USED TO STUDY RATIO OF UPPER ATMOSPHERIC MOISTURE TO TOTAL

**January 2003**

**July 2003**

**Water**
**Vapor**
***Above 500 mb***

**Water**
**Vapor**
***Total***

**C. Thompson, E. Olsen**

## AIRS PROJECT STATUSAIRS Science Team MeetingT. PaganoMarch 30, 2004

## AIRS/AMSU/HSB MISSION OVERVIEW

**Mission Life:****	****5-7 years **
**Team Leader:****	****Dr. Moustafa Chahine**

_**AIRS/AMSU/HSB EARTH SCIENCE QUESTIONS AND APPLICATIONS**_
**The global water and energy cycle:  **Is the cycle of evaporation and precipitation on Earth accelerating?
**Determine the distribution and variations of water vapor - **Earth’s primary greenhouse gas
**Climate weather connection:  **Are current weather anomalies (hurricanes, droughts) connected to climate change and how?
**Improving weather prediction:  **NOAA is a user together with 6 other weather prediction centers in Europe, America, Australia and Japan
**Trace Gasses:  **Will provide the first satellite global map of the distribution of atmospheric concentration of CO2

**AIRS/AMSU/HSB MISSION OVERVIEW**

**EOS Aqua**
**Launch: May 4, 2002**

## AIRSOperations Status

**Healthy—all temperatures, voltages, and currents as expected**
**Scanner is parked (for about three hours) whenever thrusters are fired**
***Drag make up burns (actual burn time approximately 1 minute)***
- Approximately every six weeks
***Orbital inclination adjustments (burn time about 10 minutes)***
- One is planned for March 31, 2004
- Four more are planned in October 2004
**AIRS is put in “READY” mode once a month (usually) for MODIS lunar calibration roll maneuvers**
***Hardware state unchanged***
***Data are marked “Not for routine processing”***
***Maneuver lasts about half an hour***
***Two or three times a year this maneuver is skipped because the required roll amount would exceed spacecraft constraints***
***We run a guard test before each maneuver***
- AIRS is in CHECKOUT mode for about 25 minutes

## AMSU-A, HSBOperations Status

**AMSU-A**
***Healthy—all temperatures, voltages, and currents as expected***
***We no longer park the scanners for thruster burns***
**HSB**
***Remains in Survival Mode***
***The last restart attempt was on January 15***
***We are developing new stored command sequences and other operations software to enable HSB restart attempts to be performed in a fully automated manner***
***One restart attempt (November 13, 2003) resulted in instrument initialization and scanning***
- HSB ran for a little over two minutes
- HSB managed to recover from several anomalies during this period

## AIRS/AMSU/HSB DATA PRODUCTS

**RMS Uncertainty***

**Horizontal Resolution**

- 1 km below 700 mb
- 2 km 700-30 mb

- 2 km in troposphere

_**Radiance Products (Level 1B)**_
**AIRS IR Radiance**
**AIRS VIS/NIR Radiance**
**AMSU Radiance**
**HSB Radiance**
_**Standard Core Products (Level 2)**_
**Cloud Cleared IR Radiance**
**Sea Surface Temperature**
**Land Surface Temperature**
**Temperature Profile**
**Humidity Profile**
**Total Precipitable Water**
**Fractional Cloud Cover**
**Cloud Top Height**
**Cloud Top Temperature**

**3%**
**20%**
**0.25-1.2 K**
**1.0-1.2 K**
**1.0K**
**0.5K**
**1.0K**
**1K**
**15%**
**5%**
**5%**
**0.5 km**
**1.0 K**

**15 x 15 km**
**2.3 x 2.3 km**
**45 x 45 km**
**15 x 15 km**
**45 x 45 km**
**45 x 45 km**
**45 x 45 km**
**45 x 45 km**
**45 x 45 km**
**45 x 45 km**
**45 x 45 km**
**45 x 45 km**
**45 x 45 km**

**Vertical**
**Resolution**

## Validation Timeline

- Val1 = nonpolar day/night ocean
*Version 3.0 September 2003 *
- Val2 = Val1 + nonpolar night land.
*Version 4.0 September 2004*
- Val3 =  Val2 +  nonpolar  day land
*Version 5.0 June 2005*
- Val4 =  Val3 +  polar night
*Version 6.0 March 2006*
- Val 5=  Val 4 + polar day .
*Version 7.0 December 2006*

## AIRS/AMSU VALIDATION TIMELINENext up:  Nonpolar night land

**AIRS/AMSU VALIDATION TIMELINE****Next up:  Nonpolar night land**

** **

**Version**

** **

**3.0**

** **

**4.0**

** **

**5.0**

** **

**6.0**

** **

**7.0**

** **

**8.0**

** **

** **

**Activation Date**

** **

**7/1/0**

**3**

** **

**9/17/04**

** **

**6/24/05**

** **

**3/24/06**

** **

**12/15/06**

**9/21/07**

** **

**Radiance **

**Products (L1)**

** **

** **

** **

** **

** **

- AIRS Radiance

- Prov

- Val2

- Val4

- Val5

- VIS/NIR Radiance

- Prov

- Val2

- Val4

- Val5

- AMSU Radiance

- Beta

- Prov

- Val2

- Val4

- Val5

- HSB Radiance

- Beta

- Prov

- Val2

- Val4

- Val5

**Standard **

**Products **

**(L2)**

** **

** **

** **

** **

** **

- Cloud

- -

- Cleared IR

- Radiance

- Beta

- Val2

- Val3

- Val4

- Val5

- Surface

- Temperature

- Beta

- Val2

- Val3

- Val4

- Val5

- Temperature

- Profile

- Beta

- Val2

- Val3

- Va4

- Val5

- Humidity Products

- Beta

- Val1

- Val 2

- Val3

- Val4

- Val5

- Cloud Cover

- Products

- N

- Beta

- Val1

- Val2

- Val2

- V

- al3

- Beta = Not suitable for scientific investigations. Consult with AIRS Project on regional status.

- Prov = Provisionally validated. Useable for  scientific investigations with caution. Validated for nonpolar night ocean only** **

- Val1 = nonpolar day/night ocean.
- Val2 = Val1 + nonpolar night land.
- Val3 =  Val2 +  nonpolar  day land
- Val4 =  Val3 +  polar night
- Val 5=  Val 4 + polar day .

- Prov

**8/15/03**

## AIRS/AMSU DISTRIBUTION CENTERS

## AIRS Recent AccomplishmentsWeather

**All AIRS Data Products Released to Public in September 2003 with Validation Report.  Quality = “Beta”**
**Level 1 products assimilated by ECMWF operational forecast in October 2003.**
**Released L1B Direct Broadcast Nov 5, 2003**
**AIRS Data Combined with SeaWinds**
**ECMWF shows improvement in Mesospheric Temperatures from assimilation of AIRS data**
**Early assimilation studies show improvement in 5 day Southern Hemisphere forecast score by several hours.  Improvement also seen in cyclone position and intensity prediction.**
**L2 Product quality improved in preparation for April ’04 delivery to NOAA for distribution to NWS for forecast assessment.**
**Near-real-time weather products put on AIRS web site**

## Recent Improvements Reduce Outliersin SST and Boundary Layer Temperatures

- QA	RetType	RetQA
- RMS (K):  	2.35	1.49
- Std (K):	1.89	1.22
- Outliers (%)	15.2	4.8
- Yield (%)	67.4	47.5

- 1K/km
- RMS
- Compared
- To ECMWF

**Surface Temperature (AIRS-ECMWF)**

**Atmospheric Temperature (AIRS-ECMWF)**

**T. Hearty**

**News**
**V3.5 Reduces Outliers to Less than 1%**
**See Sung-Yung Lee’s Talk**

## AIRS SUPPORTS WEATHER

**AIRS SUPPORTS WEATHER**

**Improved Temperature and H20**
**Profiles**

**Data Assimilation**

**Hurricane Tracking**

**Data Synthesis**

**Heat Wave**

**Near-Real-Time Products on Web**

## AIRS Recent AccomplishmentsScience and Climate

**Comparison of Ozone product with TOMS shows agreement better than 4% rms.**
**Trace gas studies show SO2 plumes distinctly different than aerosol plumes from volcanoes**
**CO plumes seen from CA wildfires**
**Aerosol products show good agreement with MODIS **
**Prototype of L3 Products now available**
**Numerous AIRS publications in IEEE and at ITOVS, AGU, AMS and SPIE conferences.**

## AIRS SUPPORTS CLIMATE STUDIES

**Monthly Temperature**

**Monthly H2O**

**Ozone**

**Clouds**

**Level 3 Products**

**SO2**

**Aerosols**

**CO**

## AIRS RESEARCH PRODUCTSINCLUDE TRACE GASES

**AIRS RESEARCH PRODUCTS****INCLUDE TRACE GASES**

## AIRS Education and Public Outreach

**New web page layout**
***structured by type of users (Meteorologist, researchers, press)***
***Near-real-time weather***
***Rapid response to weather events (hurricanes, etc.)***
**Press Releases and Image Advisories in work**
**Science Team Participation Solicited**
***Image Advisories***
***Press Releases after Publication***
***AIRS Web Page Stories***
***Press Release Stories on You!***
***JPL Well connected in EPO***
**Contact Sharon Okonek**
***Sharon.okonek@jpl.nasa.gov***

## Summary and Conclusions

**Validated AIRS Standard Products meet Science Requirements**
**Well Behaved Stats demonstrate quality improvements**
**Monthly Geophysical Products being Produced**
***Show great promise for climate studies***
**Research Products being produced today**
***Infrared spectrum rich in information***
**Next Steps:  **
***Improve cloud clearing***
***Improve product accuracy over land***