# Presentation: 743208

##  Airborne observations and satellite validation: INTEX-A experience and INTEX-B plansH. Singh, W. Brune, J. Crawford, H. Fuelberg and D. Jacob (White paper http://cloud1.arc.nasa.gov)  

_** **_**Airborne observations and satellite validation: INTEX-A experience and INTEX-B plans****H. Singh, W. Brune, J. Crawford, H. Fuelberg and D. Jacob**_** **_(**White paper http://cloud1.arc.nasa.gov)**_** **_** **

**INTEX-A: Summer  2004 **
**large biosphere emissions**
**active photochemistry **
**max terrestrial carbon uptake**
**INTEX-B: Spring 2006 **
**maximum Asian inflow to NA**
**seasonal contrast**

_**GOAL: **_**To***** *****understand the transport, transformation, & impacts of gases & aerosols on air quality & climate on intercontinental scales**

_**Surface spring-O**__**3**__** trend US west coast**_

- 0.5 ppb/yr

**Jaffe et al., 2003**

## INTEX-A/ICARTT PLAN & COORDINATION

**• ****Inter-comparisons**
**• ****Coordinated Science flights**
**• ****Sharing of forecasts & data**
**• ****Joint publications**

** ****Outflow of gases/aerosols **
**• ****Source characterization**
** ****Chemical evolution**
** ****Carbon cycle**
** ****Direct/indirect effects of aerosols **
** ****Satellite validation**

**NASA/**
**INTEX-A**

**NOAA/**
**ITCT**

**UK/ITOP**

**DLR, CNRS**

**US, Canada, UK, France, Germany**

## INTEX-A DC-8 satellite validations(Terra, Aqua, Envisat)

**CO**
**HCHO**
**NO****2**** **
**SO****2**
**H****2****O**
**HCN **
**O****3**
**Aerosol**
**Organics**

- Terra

- Aqua

- Envisat

**Profiles:**
** ****to 11 km**
** ****cloud free**
** ****15 mi spiral**
** ****1 hr window**

** **_**DC-8/J-31/RB**_**:**
** ****MOPITT**
** ****MISR**
**- AIRS**
**- SCIAMACHY**

- 10	      10                  4

## MOPITT, AIRS & DC-8 CO

**Emmons/McMillan/Sachse et al**

## MISR Image with flight track  L’s Superimposed over Ron Brown Location

**INTEX-A MISR Stacked L’s Maneuver in co-ordination with NASA DC-8, J31 and Ron Brown (08/07/2004)**

**Ron Brown**

**DC-8**

**J-31**

- Imaged Region

**MODIS 07/21/2004 1805 UT, for ref**

-  **Aerosol variability along- & across-wind directions.**
** ****Closure tests with *****in-situ *****aerosol observations**

**R. Kahn/ A. Clarke/ P. Russell/T. Bates et al**

## Carbon cycle in INTEX-A

**FTS-CO2 column**

**NASA DC-8 spiral 0.5-33 Kft**
**NSF King Air 0.5-25 Kft**

**CO****2**** **
**Draw down**
**≈ ****3%**

**S. Vay et al**

**440 m Tower**

**Park Falls, WI  [46N, 90W]**

## Alaskan fire influences over Atlantic

_**Alaskan fire influences over Atlantic**_

## Continental CH2O Distributions & convection

**A. Fried et al. **

## Asian outflow seen by AIRS sampled by DC-8

**July 01, 2004**

**E. Browell et al.**

**O****3**

- Aerosol

## 7-day forward Asian Trajectories (past 140W)

_**7-day forward Asian Trajectories (past 140W)**_

**April Data for 15 years**

**344 trajectories ~ 10%**

**H. Fuelberg**

## 3-day forward MEX Trajectories

_**3-day forward MEX Trajectories**_

**March Data for 15 years;   33% over US**

**H. Fuelberg**

## Slide 12

## INTEX-B SCIENTIFIC GOALS

**• **** ****Transport & evolution of Asian pollution to NA and beyond & implications for regional air quality & climate **
**• ****Outflow & evolution of gases and aerosols from the Mexico City megaplex**
**• ****Validation of satellite observations of tropospheric composition**
**• ****Mapping of emissions & relating atmospheric composition to sources and sinks**

## DC-8 & C-130 coordination in INTEX-B

_**DC-8 & C-130 coordination in INTEX-B**_