# Presentation: 385658

## TES PROGRAM STATUS

**Reinhard Beer, Annmarie Eldering & the TES team**
**Jet Propulsion Laboratory**
**Atmospheric & Environmental Research Inc.**
**Harvard University**
**Oxford University**
**NASA Langley R.C.**
**AURA Science Team Meeting, PASADENA, CA Oct 1-5 2007**

## The TES Experiment

## TES Operating Modes

***Global Survey:*** **16 orbits of nadir & limb observations repeated every other day. This is the source of ****Standard Products****.**
***Stare:*** **Point at a specific latitude & longitude for up to ~4 minutes.**
***Transect:*** **Point at a set of contiguous latitudes & longitudes to cover ~450 km.**
***Step-&-Stare:*** **Point at nadir for 4 seconds (5.2 seconds with necessary reset). Spacecraft has moved ~40 km. Point at nadir again. Repeat indefinitely.**
***Limb Drag:***** Point at the trailing limb (16 second scans). Repeat indefinitely.**
**These last 4 modes constitute ****Special Products**** that are obtained *****only***** when no ****Global Survey**** is scheduled.**

## Examples of TES nadir coverage

- Step/Stare footprints
- 45 km apart
- Special observation

- Global Survey footprints
- 180 km apart
- Every 2 days... 312 and counting

- Transect footprints
- Contiguous!
- Special observation

## Project Highlights

- 01-08-07	Release 10 Operational at SIPS
- 01-15-07	Begin Release 10 Nadir reprocessing
- 01-24-07	Fifteenth Detector de-ice Jan. 24-26, 2007
- 01-29-07	Begin seven week SO collection in Sweden to support of SAUNA ozone validation campaign
- 04-19-07	Initial release of Level 3 PGE delivered to SIPS
- 04-28-07	Begin Release 10 Limb reprocessing
- 04-22-07	Begin ten week SO collection of US-Mexico Border to observe pollution events
- 06-11-07	Sixteenth Detector de-ice June 11-13, 2007
- 07-01-07	Begin nine week SO collection of Beijing to study pollution outflow
- 07-04-07	Begin seven week SO collection of North America to measure summertime pollution and support WAVES_2007
- 07-15-07	Begin four week SO collection of SO’s supporting TC-4 in Costa Rica
- 07-27-07	Delivered Level 2 PGE point build supporting SCF full filter processing
- 08-04-07	Filter Wheel Anomaly

## TES Science Observations and Level 2 ProductsJanuary through June 2007

## TES Science Observations and Level 2 ProductsJuly through December 2007

-  band of NH3  and the blue ring indicates the

**TES Science Observations and Level 2 Products****July through December 2007**

## Instrument Highlights

- All subsystems continue to operate nominally
- TES completed three years of on-orbit operations July 15, 2007
- ICS average motor current during Global Surveys continues a gradual upward trend
- ICS Action Plan remains unchanged
- If ICS mean/peak current becomes unacceptable (value under analysis) _or_ ICS mechanism stalls:
- Warm motor/encoder to 25°C, execute several long scans, cool and continue
- Increase coarse motor voltage setting
- A Filter Wheel Anomaly occurred on August 4, 2007 - Instrument Operations resumed within 48 hours
- Summary of ICS Electronics and Fault Management Study
- ICS Motor and Electronics both capable of running at high current without damage
- ICS motor overcurrent monitoring has conversion limitation
- A plan is underway to modify the Fault Threshold Table to enable the Flight software to correctly measure ICS overcurrents greater than 2.1 amps

## Water Vapor Cycle

- Measuring the ratio of water and heavy water (HDO) tells about the evaporation processes in the atmosphere.
- We learn about the intensity of the hydrological cycle, or evaporation and condensation processes.
- Nature paper by J. Worden, D, Noone, K. Bowman et al. (2/2007),         JPL press release

## TES observes elevated lower tropospheric ozone

**Problem:** Understanding the distribution of tropospheric ozone, and controlling processes.
**Result:**  TES observations show high concentrations of *upper* tropospheric ozone south of the ITCZ, and high concentrations of *lower *tropospheric ozone north of the ITCZ.
**Significance:** First space-borne measurement to differentiate ozone layers of the troposphere. These observations are being used to improve estimates of the impact of biomass burning on tropospheric ozone.

- ( **L. Jourdain et al. GRL, 2007)**

## ENSO effects on trop composition

- Jennifer Logan et al,  The effects of the 2006 El Niño on tropospheric composition as revealed by data from the Tropospheric Emission Spectrometer (TES)
- Fire emissions, associated with low rainfall, and dynamical impacts of the El Nino created marked differences in CO and O3 fields between 2006 and 2005.

**Ozone (ppb)**

**CO (ppb)**

## TES observations of IR radiative forcing

**Problem:** Radiative forcing of tropospheric ozone is modeled, but not measured. Tropospheric ozone is important in total radiative budget and uncertain in the future.
**Result:**  **TES** observations used to quantify the observed IR forcing of tropospheric ozone and water vapor in the ozone band.
**Significance:** First space-borne measurement of tropospheric ozone forcing. TES observations are in the range of model forecasts, but show more sensitivity  of IR forcing in the Northern Hemisphere than models.

- ( **H. Worden et al. in prep, 2007)**

## Amazon Rainy Season Water Budget

- (Brown, Worden, Noone, to be submitted)

- Back Trajectories from most depleted vapour observations (blue histograms) show condensation and re-evaporation history associated with Andes Mountains and source region North of Brazil

- Least depleted vapour observations (red histograms) show direct transport from oceanic source with little condensation history.

## Enhanced and Depleted Ozone in Boreal Fire Plume

- Figure: Ozone and CO as observed by TES; Aerosol optical depth, and NO2 tropospheric column amounts as observed by OMI for Siberian Boreal fires are depicted in the above Figures  Figure (a) shows enhanced ozone, CO and NO2 in a relatively fresh part of the smoke plume and Figure (b) shows reduced ozone, despite of presence of CO, and NO2 under similar conditions but in the presence of optically thick aerosol amounts .
- Aerosols have a significant impact on the ozone photochemistry in the boreal fires.

- Case (a)  TES O3/CO 24th July 2006

- TES

- OMI

- Case (b)  TES O3/CO 24th July 2006

- OMI

- TES

- Ozone production in Fire smoke plumes is highly variable

**Enhanced and Depleted Ozone in Boreal Fire Plume**

- Verma et al, in prep

## Assessing the response of the dynamics in AM2-Chem to the assimilation of TES O3

**Assessing the response of the dynamics in AM2-Chem to the assimilation of TES O****3**

**AM2-Chem at 5 km 15 Aug 2006 (with nudged dynamics)**

**AM2-Chem at 5 km after assimilation of TES O****3**

_**Approach**_
** ****Assimilate TES O****3**** in AM2-Chem**
**Impose optimized O****3**** fields in the radiation calculation in the free running GCM to examine response of dynamics to the O****3**** heating**

**(ppb)**

**D. Jones, et al., in prep**

## Ongoing Collaborations & Pubs

- Brad Pierce (NOAA-NESDIS)
- Jay Al-Assadi (NASA Langley)
- Dylan Jones (Univ. Toronto)
- David Noone (Univ. Colorado)
- Larry Horowitz (GFDL)
- Mary Barth (NCAR)
- Helen Worden (NCAR)
- Ken Pickering (Goddard)
- Qinbin Li (JPL)
- EPA Region 9
- Nigel Richards (Univ. Leicester)
- Jenny Moody (Univ. Virginia)
- Henry Fuelberg (Florida State)
- Adrian Sandu (Virginia Tech)
- Kelly Chance & Xiong Liu (SAO)
- Texas Commission on Environmental Quality (TCEQ)

- Harvard crowd
- MLS team
- Jae Kim