Jetstream 31 J31 in INTEXBMILAGRO: Campaign Context, Science Goals, Measurement Approach, and Exampl - PowerPoint PPT Presentation

Loading...

PPT – Jetstream 31 J31 in INTEXBMILAGRO: Campaign Context, Science Goals, Measurement Approach, and Exampl PowerPoint presentation | free to download - id: 24b2d8-ZmQxN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Jetstream 31 J31 in INTEXBMILAGRO: Campaign Context, Science Goals, Measurement Approach, and Exampl

Description:

5 A/C based in Veracruz, MX and 1 in Houston, TX. ... Test chemical transport models using AOD & extinction profiles ... and aerosol properties by combining CAR ... – PowerPoint PPT presentation

Number of Views:51
Avg rating:3.0/5.0
Slides: 36
Provided by: john242
Learn more at: http://geo.arc.nasa.gov
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Jetstream 31 J31 in INTEXBMILAGRO: Campaign Context, Science Goals, Measurement Approach, and Exampl


1
Jetstream 31 (J31) in INTEX-B/MILAGRO Campaign
Context, Science Goals, Measurement Approach, and
Example Results
SG Division All-Hands Meeting 5 April 2006
NASA Ames
2
Jetstream 31 (J31) in INTEX-B/MILAGRO Campaign
Context, Science Goals, Measurement Approach, and
Example Results
Phil Russell, Lead PI Instrument PIs Jens
Redemann, Brian Cairns, Peter Pilewskie,
Sebastian Schmidt,
Charles Gatebe, Michael King, Warren Gore, Rose
Dominguez
Project Office Michael Gaunce, Sue Tolley Flight
Ops Ben Hovelman
and the rest of the J31 Team
SG Division All-Hands Meeting 5 April 2006
NASA Ames
3
Campaign Context In March 2006, INTEX-B/MILAGRO
studied pollution from Mexico City and regional
biomass burning, including sources, transport,
transformations, and effects.
MILAGRO included many measurements in and
downwind of Mexico City, 5 A/C based in
Veracruz, MX and 1 in Houston, TX.
4
Campaign Context In March 2006, INTEX-B/MILAGRO
studied pollution from Mexico City and regional
biomass burning, including sources, transport,
transformations, and effects.
MILAGRO included many measurements in and
downwind of Mexico City, 5 A/C based in
Veracruz, MX and 1 in Houston, TX.
J31 Overview
For INTEX-B/MILAGRO the J31 was equipped to
measure solar energy and how that energy
is affected by the above pollution and Earth's
surfaces.
5
Because solar energy drives Earth's climate, the
J31 suite of measurements helps show how changing
atmospheric and surface properties can change the
climate
6
SCIENCE GOALS, J31 in INTEX-B/MILAGRO Aerosol,
Water Vapor, Cloud, Surface Properties and
Radiative Effects
  • Characterize the distributions, properties, and
    effects of aerosols and water vapor advecting
    from Mexico City and biomass fires toward and
    over the Gulf of Mexico
  • Aerosol Optical Depth And Extinction Spectra
    (354-2138 nm)
  • Water Vapor Columns and Profiles
  • Aerosol Radiative Impacts In Clear Sky (Direct
    Effect) Via Clouds (Indirect Effect)
  • Test the ability of Aura, other A-Train Terra
    sensors, airborne lidar to retrieve aerosol,
    cloud, and water vapor properties
  • Characterize surface spectral albedo and
    bidirectional reflectance distribution function
    (BRDF) to help improve satellite retrievals
  • Quantify the relationships between the above and
    aerosol amount and type

Mexico City
Veracruz
7
J31 in INTEX-B/MILAGRO Payload
(RSP)
8
J31 in INTEX-B/MILAGRO Instrument Locations
AATS-14
SSFR
POS
RSP
CAR
NavMet
9
J31 Science Objectives by Sensor 1. Independent
of other J31 sensors
AATS
  • Characterize horizontal vertical distributions
    of aerosol optical depth (AOD) and extinction
    spectra (354-2138 nm), water vapor columns and
    density
  • Validate A-Train Terra products (CALIPSO, OMI,
    MODIS, POLDER, TES, AIRS, MISR)
  • Test closure with remote and in situ sensors on
    other platforms, including airborne lidar
  • Test chemical transport models using AOD
    extinction profiles
  • Assess regional aerosol radiative effects

SSFR
  • Retrieve cloud droplet radius, optical depth, and
    liquid water path
  • Compare with satellite retrievals (MODIS) and
    remote in situ sensors on the surface and
    other aircraft (incl. microwave, radar, optics,
    etc.)
  • Compare spectral irradiance from SSFR to that
    from 3-d model using MODIS input
  • Provide surface spectral albedo to help improve
    satellite aerosol retrievals
  • Determine column solar radiative boundary
    conditions for modeling studies

10
J31 Science Objectives by Sensor 1. Independent
of other J31 sensors
RSP
  • Estimate direct and indirect effects of aerosols
    on radiative forcing of climate
  • Evaluate aerosol and cloud retrieval algorithms
    for the NASA Glory mission Aerosol Polarimetry
    Sensor.
  • Validate aerosol and cloud products from A-train
    Terra (MODIS, MISR, POLDER on Parasol, OMI,
    CLOUDSAT)

CAR
  • Measure bidirectional reflectance distribution
    function (BRDF) for variety of surfaces (e.g.,
    urban center, ocean, cloud, uniformly vegetated
    soil) at different sun angles altitudes
  • Retrieve BRDF and aerosol properties by combining
    CAR with AERONET
  • Validate satellites and inter-compare with
    in-situ measurements (size distribution, SSA,
    albedo, etc.)

11
J31 Science Objectives by Sensor 2. Objectives
that combine data from 2 or more J31 sensors
AATS-SSFR
  • Derive aerosol radiative forcing from
    simultaneously measured radiative flux and AOD
    gradients
  • Study effect of over-cloud AOD on cloud property
    retrievals by SSFR and satellites
  • Study Influence of aerosols on cloud radiative
    forcing AATS-14 extinction above cloud
  • Derive spectra of aerosol absorbing fraction
    (1-SSA) from spectra of radiative flux and AOD in
    thick polluted layers

RSP-AATS
  • Validate RSP retrieved spectral optical depth
  • Atmospheric correction of low altitude
    measurements to provide accurate surface
    polarized BRDF

12
J31 Science Objectives by Sensor 2. Objectives
that combine data from 2 or more J31 sensors
RSP-AATS-SSFR
  • Evaluate remote sensing methods (RSP lidar) for
    determining the aerosol radiative forcing profile
    against the measured spectral optical depth and
    radiative flux profile

CAR-AATS
  • Retrieve BRDF and aerosol optical properties
    simultaneously from combined data sets CAR,
    AATS, and AERONET.

CAR-AATS-RSP
  • Extend CAR retrieval algorithm to include RSP,
    AATS, AERONET.

13
To accomplish these goals and objectives we had
  • 19 Days
  • (3-21 Mar)
  • 45 Flight
  • Hours

14
To accomplish these goals and objectives we had
  • 19 Days
  • (3-21 Mar)
  • 45 Flight
  • Hours
  • A/C Instruments performed very well
  • A/C available to fly every day
  • Instruments had very high data capture rates

15
J31 Science Flights out of Veracruz in
MILAGRO/INTEX-B
16
J31 Science Flights out of Veracruz in
MILAGRO/INTEX-B (cont'd)
17
J31 Example Results
  • Jens Redemann AATS
  • Chris Hostettler AATS-HSRL-HiGEAR Comparison
  • Brian Cairns RSP
  • Sebastian Schmidt, Peter Pilewskie SSFR

18
AATS-14 on the J31 in INTEX-B/MILAGRO Science
Goals, Objectives, and Required Flight
Patterns Jens Redemann, Phil Russell, John
Livingston, Roy Johnson, Nicholas Truong, Beat
Schmid, Qin Zhang and the J31 team
19
J31 Science Flights out of Veracruz in
MILAGRO/INTEX-B
20
March 10, MISR local mode and MODIS-Terra
coincidence over the Gulf of Mexico, the
retrieval maps show MODIS-Terra results and J-31
flight track
21
March 10, 2006 - MODIS-Terra coincidence
over the Gulf of Mexico
MODIS AATS-14
MODIS/AATS 470 / 453 550 / 519 870 / 864 2140 /
2139
22
J31 Science Flights out of Veracruz in
MILAGRO/INTEX-B
23
March 6, MISR local mode over Mexico City
MISR 70 deg aft. Courtesy of Ralph Kahn, MISR team
24
March 6, variability in aerosol and CWV during
MISR local mode over Mexico City
25
J31 Example Results
  • Jens Redemann AATS
  • Chris Hostettler AATS-HSRL-HiGEAR Comparison
  • Brian Cairns RSP
  • Sebastian Schmidt, Peter Pilewskie SSFR

26
One King Air/HSRL Goal Evaluate/validate the
HSRL retrieved profiles of aerosol extinction
27
Evaluate/validate the retrieved profiles of
aerosol extinction
  • Compare aerosol extinction/optical thickness
    with AATS14 on J-31
  • AATS14 data courtesy of Russell, Redemann,
    Livingston

28
Comparison of HSRL extinction/AOT with other
instruments
  • Comparison of aerosol extinction/optical
    thickness with AATS14 on J-31 and HIGEAR on C130
  • AATS14 data courtesy of Russell, Redemann,
    Livingston
  • HIGEAR data courtesy of Tony Clarke

Spiral location for J31 C130
29
J31 Example Results
  • Jens Redemann AATS
  • Chris Hostettler AATS-HSRL-HiGEAR Comparison
  • Brian Cairns RSP
  • Sebastian Schmidt, Peter Pilewskie SSFR

30
RSP on J31 Science Objectives
RSP
  • Evaluate aerosol and cloud retrieval algorithms
    for the NASA Glory mission Aerosol Polarimetry
    Sensor.
  • Validate aerosol and cloud products from A-train
    Terra (MODIS, MISR, POLDER on Parasol, OMI,
    CLOUDSAT)

RSP-AATS
  • Validate RSP retrieved spectral optical depth
  • Atmospheric correction of low altitude
    measurements to provide accurate surface
    polarized BRDF

Mexico City surface photographed by RSP camera on
J31 flight
31
RSP on J31 Example Results
RSP
  • Urban surfaces are bright, heterogeneous and
    filled with man-made objects
  • How well do simple conceptual models work?
  • Surface reflectance is bright
  • Polarized reflectance is not. Polarized surface
    reflectance quite grey.

32
RSP on J31 Example Results (cont'd)
RSP
  • Atmospheric signal large compared to surface
  • Surface quite grey
  • implies aerosol retrievals should be of
    comparable accuracy to other retrievals over land
    (i.e. optical depth within 0.03, refractive
    index, single scattering albedo for optical
    depths greater than 0.3)

33
J31 Example Results
  • Jens Redemann AATS
  • Chris Hostettler AATS-HSRL-HiGEAR Comparison
  • Brian Cairns RSP
  • Sebastian Schmidt, Peter Pilewskie SSFR

34
SSFR Solar Spectral Flux Radiometer on J31
F?
F?
sebastian.schmidt_at_lasp.colorado.edu
jpommier_at_mail.arc.nasa.gov peter.pilewskie_at_lasp.
colorado.edu
35
SSFR Solar Spectral Flux Radiometer on J31
Example MARCH-10 (A.M. flight) Time Series
leveled data as archived
NOTE Archive includes time series of 9
wavelengths in VIS and NIR, and two broadband
(350-700 nm and 350-2200 nm) for the upward and
the downward sensor.
SURFACE ALBEDO FOR T0, T1, T2 We hope to get a
Ci free day to provide this product ?
META DATA We have photos monitoring the general
situation. Where could we post that kind of
information?
below layer
above layer
sebastian.schmidt_at_lasp.colorado.edu
jpommier_at_mail.arc.nasa.gov peter.pilewskie_at_lasp.
colorado.edu
About PowerShow.com