# Presentation: 413427

## Examples ofARCTAS results for Dr. Michael FreilichPhil Russell, NASA Ameswith contributions from many, many experimenters, modelers, forecasters, & P-3 air & flight crews

- Mon 14 Jul 2008

## ARCTAS P-3 Data Flight #17, 30 Jun 2008

**GEOS5 Model prediction of **
**Aerosol Optical Thickness (AOT) **

**ARCTAS P-3 Data Flight #17, 30 Jun 2008**
**To measure composition & radiative effects of wildfire smokes in CALIPSO & B200 lidar tracks**

**Flight Plan A**

**Planned P3 **
**Flight Track**

## P-3 photographed from DC-8 

**P-3 photographed from DC-8 **
**on 10 Jul 2008 intercomparison flight below B-200**

## ARCTAS P-3 Data Flight #15, 28 Jun 2008

**AOD, 0Z,7/8**

**View from cockpit approaching Lake Athabasca fires**

**ARCTAS P-3 Data Flight #15, 28 Jun 2008**

## ARCTAS P-3 Data Flight #15, 28 Jun 2008

**AOD, 0Z,7/8**

**A closer view from cockpit**

**ARCTAS P-3 Data Flight #15, 28 Jun 2008**

## A closer view from cockpit

**A closer view from cockpit**

## P-3 in ARCTAS: Payload

**P-3 in ARCTAS: Payload**

| Ames Airborne Tracking 
Sunphotometer (AATS-14) | Solar Spectral Flux Radiometer (SSFR) | Broad-Band Radiometers (BBR)
LW          SW |
| --- | --- | --- |
| HiGEAR Aerosols & O3
 OPC & DMA dry size dist, volatility 
 Tandem Volatility DMA
 Neph scat + PSAP abs
 Humidified Neph f(RH)
 Ultrafine  & CN
 Time of Flight Mass Spec size resolved chemistry
 SP2  black carbon mass  | AERO3X | Cloud Absorption Radiometer (CAR) |
| P-3 Data System (PDS): Nav, Flight, Met (P, T, RH, ...) |  | REVEAL & RTMM |

****** ****AOD**
**** **Ext**
**  ****H****2****O **
** ****vapor**

** ****Cavity Ringdown ext (2********)**
** ****Reciprocal Neph sca (2********, **RH **)**

****** ****Radiance, BRDF**

****** ****Flux****↑****,****↓****(********), albedo(********)**

****** ****Flux****↑****,****↓****, albedo**

** ****Nenes CCN**
** ****PVM cloud drop r****eff****, vol**
** ****TECO ****O****3**

**COBALT:****  ****CO**

## Typical maneuvers flown by P-3 in ARCTAS 

**P-3**

**DC-8**

**Typical maneuvers flown by P-3 in ARCTAS **
**To measure aerosols, CO , O3, & radiative effects**

## ARCTAS P-3 Data Flight #18, 2 July 2008

**“****Atomic Bomb” smoke tower**

**ARCTAS P-3 Data Flight #18, 2 July 2008**

## ARCTAS P-3 Data Flight #18, 2 July 2008

**AOD, 0Z,7/8**

**Capping cloud and surrounding outflow above “Atomic Bomb” smoke tower**

**ARCTAS P-3 Data Flight #18, 2 July 2008**

## ARCTAS P-3 Data Flight #17, 30 Jun 2008

**AOD, 0Z,7/8**

**GEOS5 Model prediction of **
**Aerosol Optical Thickness (AOT) **

**ARCTAS P-3 Data Flight #17, 30 Jun 2008**
**To measure composition & radiative effects of wildfire smokes in CALIPSO & B200 lidar tracks**

**Flight Plan A**

**Planned P3 **
**Flight Track**

## Photos from P3 Data Flight #17, 30 Jun 2008

**Photos from P3 Data Flight #17, 30 Jun 2008**

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## P3 Actual Flight Track, 30 Jun 2008

**P3 Actual Flight Track, 30 Jun 2008**

_**Accomplishments**_**:**
**Smoke AOD and in-situ microphysics measured in CALIPSO curtain. **
**2. Plume differences characterized in “black, flaming” and “white, smoldering” plumes, both chemically and optically.**
**3. Successful coordination of in-situ and radiation in B200 lidar curtain.**
**4. Aerosol physiochemical and optical evolution in aging plumes. **
**5. Radiative flux stacks successful in crosswind legs above and below plume.**
**+ Others...**

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## ARCTAS P-3 Data Flight #21, 7 Jul 2008

**AOD, 0Z,7/8**

**STEM Model prediction of **
**Aerosol Optical Depth (AOD) **

**ARCTAS P-3 Data Flight #21, 7 Jul 2008**
**To measure composition & radiative effects of advancing Asian/Siberian plume**

**Flight Plan A**

## GEOS5 Aerosol Forecast: 

**July 7 P3 Flight**

- Lots of aerosols in the Siberian fire/Asian anthro. Plume, including sulfate, dust, OC, & BC.

## GEOS5 CO Forecast: 

**July 7 P3 Flight**

- No significant California fire or N. American pollution.

- A strong Siberia fire/Asian anthropogenic plume between 7-10 km.Weak Siberia fire/Asian anthropogenic plumes between 1-6 km.

## P3 Actual Flight Track, 7 Jul 2008

**AOD, 0Z,7/8**

**P3 Actual Flight Track, 7 Jul 2008**

**Accomplishments:**
**Aerosol radiative forcing efficiency (********F/********AOT) under edge of advancing Asian/Siberian plume**
**Aerosol effects on MODIS-Terra **_**cloud**_** remote sensing**
**Tests of model aerosol, CO, & O****3**** predictions @ many locations**
**Radiant flux divergence stacks for SSA(********) @ 2 locations**
**CAR circles over AERONET for CAR-AERONET retrievals**
**3-way closure (in situ, AATS, AERONET) in spiral**

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## S. Howell et al., HiGEAR

**S. Howell et al., HiGEAR**

**PRELIMINARY**

## PRELIMINARY DATA

- 220 km

**PRELIMINARY DATA**

**ARCTAS P-3 Data Flight #19, 3 Jul 2008**
**Sampled local and long-distance plume in Terra MISR & MODIS  footprints**

- AATS-measured
- AOD profile

- HiGEAR-measured in situ scattering

## PRELIMINARY

- Missing layers at the top and bottom estimated by extrapolation, as illustrated in subsequent slides.

- Data from AATS, AERONET, & HiGEAR groups:
- Redemann, Shinozuka, Livingston, Ramachandran et al.
- McArthur et al.
- Clarke, McNaughton, Howell, Freitag et al.

- Analysis by Yohei Shinozuka

**ARCTAS P-3 Data Flight #19, 3 Jul 2008**
**3-way agreement of data to test satellite retrievals **