Skip all navigation and jump to content Jump to site navigation Jump to section navigation.
NASA Logo - Goddard Space Flight Center + Visit NASA.gov region to select the NASA home page region to select the NASA GSFC home page
Aerosol Robotic Network (AERONET)
AEROSOL OPTICAL DEPTH AEROSOL INVERSIONS SOLAR FLUX OCEAN COLOR Maritime Aerosol Network
Web Site FeatureAERONET Data Synergy Tool - Access Earth Science data sets for AERONET sites

 +Home

 

Aerosols
AEROSOL/FLUX NETWORKS
CAMPAIGNS
COLLABORATORS
DATA
LOGISTICS
NASA PROJECTS
OPERATIONS
PUBLICATIONS
SITE INFORMATION
STAFF
SYSTEM DESCRIPTION
 
AERONET DATA ACCESS
 
AERONET Site Lists (V3)

+ Text Format

+ Google Earth Format

+ All Lists

 
FIELD CAMPAIGN -
Distributed Regional Aerosol Gridded Observation Networks (DRAGON)-USA 2011
 

 

Background
 

Aerosol measurement observations from ground-based sun photometers and sun/sky radiometers have played a critical role in developing, reformulating and validating satellite algorithms to characterize aerosol optical depth, modal aerosol retrievals and single scattering albedo among other parameters.   New and improved algorithms are being developed for current and future satellite missions that will place a greater demand on the accuracy and fidelity of the ground-based measurements for validation, multi data set synergism and long-term climate research.  Heretofore satellite validation studies using sun and sky scanning spectral radiometer measurements such as AERONET have relied on point observations extrapolated to a two dimensional domain to compare to the satellite retrieval.  Additionally few of the ground-based remote sensing measurements have had a rigorous comparison or validation against other ground-based measurements particularly in situ observations of aerosol size and absorption.  DRAGON-USA will provide a data set to address satellite validation and in situ comparisons.

+ DRAGON White Paper

 
Experimental Objectives (Top)
 
  • Establish a mesoscale gridded network of sun photometers that encompasses, urban, agricultural and mountain landscapes over the Washington DC metro area
  • Optimize the grid to validate/collaborate inversion products in conjunction with aircraft flights performing in situ measurements
  • Optimize the gridded network to validate satellite retrievals from 50 m to 10 Km pixel resolution
  • Supplement the gridded network with non gridded sites to capture known aerosol variability
  • Develop a geo-referenced database that will accommodate supplementary/complimentary data sets
 
Measurement Plan (Top)
 

The campaign will be implemented under the NASA-funded Earth Venture airborne mission, DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality). The campaign will employ NASA aircraft to make a series of flights, with scientific instruments on board to measure gaseous and particulate pollution, beginning in July 2011 in the Baltimore-Washington metropolitan area. The series of flights will be made by NASA Langley's King Air and NASA's P-3B. The measurements will be taken in concert with ground observations in order to shed light on how satellites could be used to make similar, consistent measurements over time, with the ultimate goal of putting better data in the hands of policymakers and elected officials. DISCOVER-AQ is a collaboration among scientists at NASA’s Langley Research Center in Hampton, Va.; NASA’s Goddard Space Flight Center in Greenbelt, Md.; NASA’s Ames Research Center, outside San Francisco; and multiple universities. DRAGON will be a significant part of the ground-based aerosol measurement program.

In addition to DISCOVER-AQ collaborators, AERONET will participate with the following groups:

WeatherBug Networks/Earth Networks: Establish approximately 30 AERONET sites co-located with school based WxBug automatic weather station sites. Ten to twenty more AERONET sites will be located in the region to complete the mesoscale gridded network of sun photometers.

Ihab Abboud-AEROCAN: Canadian affiliate, Environment Canada, contributing approximately 15 AERONET sites to DRAGON.

Philippe Goloub-PHOTONS: French AERONET affiliate will provide polarized sun photometer, car mounted mobile sun photometer and lidar system.

The network is planned for six weeks of operation over the Washington DC-Baltimore metropolitan area from July 1 to August 15, 2011. The network will be strategically located to take advantage of DISCOVER AQ in situ and airborne resources, see Figures 1 and 2.

Figure 1 shows the AERONET sites (yellow AERONET/WxBug and purple AERONET/DISCOVER AQ and orange long term AERONET sites).

Figure 1 shows the AERONET sites (yellow AERONET/WxBug and purple AERONET/DISCOVER AQ and orange long term AERONET sites). Download KMZ file for Figure 1.

DRAGON Text Lists

+ Level 1.0 AOD Data (TXT)
+ Level 1.5 AOD Data
(TXT)
+ Level 2.0 AOD Data (TXT)

DRAGON Google Earth Distribution

+ Level 1.0 AOD Data (Google Earth KMZ)
+ Level 1.5 AOD Data
(Google Earth KMZ)
+ Level 2.0 AOD Data (Google Earth KMZ)

 
Contacts (Top)
 
Collaborators
Project/Instrument Organization
Brent Holben
AERONET PI
NASA GSFC
Joel Schafer
AERONET
NASA GSFC
James Crawford
DISCOVER-AQ PI
NASA LaRC
Ken Pickering
DISCOVER-AQ, Deputy PI
NASA GSFC
Jay Herman
PANDORA
UMBC
Ray Hoff
UMBC Lidar
UMBC
Philippe Goloub
PHOTONS: Plasm, mobile MPL
LOA/Lille 1
Ihab Abboud
AEROCAN
Environment Canada
Dave Whiteman
Raman Lidar
NASA GSFC
Rich Ferrare
HSRL
NASA LaRC
Russ Dickerson
RAMMP Aircraft
UMCP
Judd Welton
MPLNET
NASA GSFC
Bruce Anderson
P-3B: LARGE (aerosols)
NASA LaRC
Yang Liu
Ground-based In Situ Filter Measurements
Emory University
 
Data (Top)
 

Aerosol Optical Depth Products (including Water Vapor and SDA)

+ DRAGON AOD Data Browser

+ DRAGON AOD Data Download Tool

Almcuantar Inversion Aerosol Properties (including Size Distributions, Complex Index of Refraction, Single Scattering Albedo, etc.)

+ DRAGON Inversion Data Browser

+ DRAGON Inversion Data Download Tool

 

Combined Data Download Table (April 1 to October 1, 2011)

Data
Data Format
Level 1.0 Aerosol Optical Depth (AOD)

+ All Points
+ Daily Averages
+ Monthly Averages

Level 1.5 Aerosol Optical Depth (AOD)
Level 2.0 Aerosol Optical Depth (AOD)
Level 1.0 Spectral Deconvolution Algorithm (SDA) Retrievals
Level 1.5 Spectral Deconvolution Algorithm (SDA) Retrievals
Level 2.0 Spectral Deconvolution Algorithm (SDA) Retrievals
Level 1.5 Almucantar Inversion Products
(except Phase Functions)
Level 1.5 Almucantar Inversion Products Phase Functions
Level 2.0 Almucantar Inversion Products
(except Phase Functions)
Level 2.0 Almucantar Inversion Phase Functions

 

 

  + Privacy Policy and Important Notices NASA Curator: David M. Giles
NASA Official: Brent N. Holben
Last Updated: March 28, 2017