# Presentation: 685892

## Solar Occultation from Air and Space: SOLVE II Results and Other SOSST Proposed ResearchPhil Russell1, John Livingston2, Beat Schmid3, Jill Bauman1, Jim Eilers1, Ric Kolyer1, Jens Redemann3, and Stephanie Ramirez31NASA Ames Research Center, Moffett Field, CA 2SRI International, Menlo Park, CA 3Bay Area Environmental Research Institute, Sonoma, CA

**Williamsburg, VA, 6-8 May 2003**

**Solar Occultation from Air and Space: SOLVE II Results and Other SOSST Proposed Research****Phil Russell****1****, John Livingston****2****, Beat Schmid****3****, Jill Bauman****1****, Jim Eilers****1****, ****Ric Kolyer****1****, Jens Redemann****3****, and Stephanie Ramirez****3****1****NASA Ames Research Center, Moffett Field, CA**** ****2****SRI International, Menlo Park, CA ****3****Bay Area Environmental Research Institute, Sonoma, CA**

## Research Tasks in Our SOSST Proposal

**• ****Stratospheric Aerosol Climatology from **
**  ****SAGE II and CLAES**
**• ****SAGE III Validation and Related Science:**
**	**_**SOLVE II Data Analyses**_
**• ****SAGE III and Related Algorithm Studies using **
**  ****Airborne Sunphotometer Data**
**• ****Necessary Updates to the SAGE III ATBD**
**• ****Radiative Forcing by SAGE III-Measured Aerosols**

## 2 Papers in Press

**Bauman, J.J., P.B. Russell, M. A. Geller, and P. Hamill, A Stratospheric Aerosol Climatology from SAGE II and CLAES Measurements **
**Part 1: Methodology, *****J. Geophys. Res*****., ms# 2002JD002992 **
**Part II: Results and Comparisons, 1984-1999, *****J. Geophys. Res*****., ms# 2002JD002993**
_**Plans**_**:**
**Complete publication (proofing of AGU figures, etc.).  Pay page charges. **
**Make data available to community:**
**CD **
**LaRC Atmospheric Science Data Center?**
_**Example Use**_**: Northrup-Grumman NPP Synthetic Scenes**

## ~15 Year Climatology of SAGE II & CLAES Extinction

- 15-20oN

**Ruiz**

**[Bauman et al., *****JGR***** 2003b]**

**~15 Year Climatology of SAGE II & CLAES Extinction**

**Kelut**

**Pina- tubo**

**1985**
**-**
**1989**

**1990**
**-**
**1994**

**1995**
**-**
**1999**

## [Bauman et al., JGR 2003b]

**[Bauman et al., *****JGR***** 2003b]**

## }

_**tropical volcanic injections: 1. Ruiz**_

**[Bauman et al., **
***JGR***** 2003b]**

- Latitude, °

- Altitude, km

- Altitude, km

**QBO **
**Shear **
**Phase**

**Westerly **
**below **
**24 km**

**Easterly above ~22 km**

**Ruiz Eruption**

- Surface Area, mm-

## }

_**tropical volcanic injections: 2. Kelut**_

**[Bauman et al., *****JGR***** 2003b]**

- Latitude, °

**QBO **
**Shear **
**Phase**

**Westerly at all altitudes**

- Altitude, km

- Surface Area, mm-

**Kelut Eruption**

## Size distribution width varies systematically

_**Size distribution width varies systematically**_
_**in response to volcanic injections**_

- Weighted mean distribution width, g

**[Bauman **
**et al., *****JGR***** **
**2003b]**

## Seasonal variations in S and V are most pronounced in the Northern Hemisphere

_**Seasonal variations in S and V are most pronounced in the Northern Hemisphere**_

**[Bauman et al., *****JGR***** 2003b]**

- Surface Area, mm-

- Volume, mm-

**50-55° North**

**50-55° North**

**50-55° South**

**50-55° South**

## Comparison of Surface Areas 

- (a) Laramie, Wyoming (41° N),
- derived by Deshler *et al. *[1993]
- using lognormal fits to *in situ *
- size distributions.

_**Comparison of Surface Areas **_
_**Derived from Balloonborne Size Distributions and SAGE II-CLAES Extinction Spectra**_

- Surface Area Density, mm-

- (b) 40° to 45° N, retrieved
- from SAGE II & CLAES
- using LUT

**[Bauman et al., *****JGR***** 2003b]**

## 2 Papers in Press

**Bauman, J.J., P.B. Russell, M. A. Geller, and P. Hamill, A Stratospheric Aerosol Climatology from SAGE II and CLAES Measurements **
**Part 1: Methodology, *****J. Geophys. Res*****., ms# 2002JD002992 **
**Part II: Results and Comparisons, 1984-1999, *****J. Geophys. Res*****., ms# 2002JD002993**
_**Plans**_**:**
**Complete publication (proofing of AGU figures, etc.).  Pay page charges. **
**Make data available to community:**
**CD **
**LaRC Atmospheric Science Data Center?**
_**Example Use**_**: Northrup-Grumman NPP Synthetic Scenes**

## Research Tasks in Our SOSST Proposal

**• ****Stratospheric Aerosol Climatology from **
**  ****SAGE II and CLAES**
**• ****SAGE III Validation and Related Science:**
**	**_**SOLVE II Data Analyses**_
**• ****SAGE III and Related Algorithm Studies using **
**  ****Airborne Sunphotometer Data**
**• ****Necessary Updates to the SAGE III ATBD**
**• ****Radiative Forcing by SAGE III-Measured Aerosols**

**• ****SAGE III Validation and Related Science:**
**	**_**SOLVE II Data Analyses**_

## AATS-14 on DC-8 in SOLVE II

**AATS-14 on DC-8 in SOLVE II**

## Slide 14

## Slide 15

## Ames Sunphotometer (AATS-14) on DC-8 in SOLVE II

**Ozone**
**Aerosol**
**Water Vapor**

**Spatial Structure**
**Spectra vs Wavelength**
**Vertical Profiles**

_**8 Successful Science Flights:  Example Results**_

## Brewer Data Courtesy of Ken Lamb, International Ozone Services

## DC-8 Flight Path, 21 Jan 2003, SOLVE II

- SAGE III

- POAM

**DC-8 Flight Path, 21 Jan 2003, SOLVE II**

- Kiruna

## GOME

-  **Closest TOMS Locations**

**TOMS**

## DC-8 Flight Path, 21 Jan 2003, SOLVE II

- SAGE III

- POAM

**DC-8 Flight Path, 21 Jan 2003, SOLVE II**

- Kiruna

## X < 60 km          

******X < 60 km**

## DC-8 Flight Path, 24 Jan 2003, SOLVE II

**DC-8 Flight Path, 24 Jan 2003, SOLVE II**

- SAGE III

- POAM

- Kiruna

## Slide 24

## X < 100 km          

******X < 100 km**

## Ames Sunphotometer (AATS-14) on DC-8 in SOLVE II

**Ozone**
_**Aerosol**_
**Water Vapor**

**Spatial Structure**
**Spectra vs Wavelength**
**Vertical Profiles**

_**8 Successful Science Flights:  Example Results**_

## Airmass is very sensitive to vertical distribution

- [*GRL* *20*, 2571–2574, 1993]

- (AASE II Range: ~85 to 87.5°)

- If AATS optical depth (OD) is too sensitive to airmass, we may do
- SAGE III validation comparisons in _path OD_, rather than vertical OD.

**Airmass is very sensitive to vertical distribution**
**When sun is near horizon (SZA > 89°)**

- Airmass  ODsun-viewing path / ODvertical ,
- assuming homogeneity in spherical shells

## DC-8 Flight Track, 19 Jan 2003 

**DC-8 Flight Track, 19 Jan 2003 **

- 12Z, 19 Jan 2003, 460K

- Kiruna

- SAGE III

- POAM

## Preliminary

- SAGE III

- 19 Jan 2003  SAGE III: 9.87 UT, 69.31 N, 24.20 E

- (SZA ~89.7°)

******X  < 100 km**

## Preliminary

******X  < 60 km**

## AATS-14/SAGE III Coincidences in SOLVE II

## Ames Sunphotometer (AATS-14) on DC-8 in SOLVE II

**Ozone**
**Aerosol**
_**Water Vapor**_

**Spatial Structure**
**Spectra vs Wavelength**
**Vertical Profiles**

_**8 Successful Science Flights:  Example Results**_

## Preliminary

**AATS-14**

**AATS-14**

**DLH raw**

**Calib**

**[DLH Data: G. Diskin, J. Podolske]**

## In Conclusion

**Ozone**
**Aerosol**
**Water Vapor**

**TOMS**
**SOLVE II, ****including the other DC-8 sun viewers: GAMS/LAABS & DIAS**

_**The data set from our 8 successful SOLVE II science flights is extensive and varied:**_

_**First-Year SOSST Plan: Analyze and publish this data set in collaboration with scientists from**_

**SAGE III**
**POAM**
**GOME**

**Spatial Structure**
**Spectra vs Wavelength**
**Vertical Profiles**