Ground-based aerosol measurements update: AERONET,

MPLNET, SMART-COMMIT

•Operational Status•Science Results•Future Plans•Issues•??•

Brent Holben, Judd Welton, Si-Chee Tsay

AERONET Status

• 321 instruments• ~160-220 Operational sites• Network Partners

– GSFC– Photons (France)– RIMA (Spain)– CSIRO (Australia)– AEROCAN (Canada)

• Expansion to Asia, Africa, high latitudes and over water sites

Provide a long term data set to:•Characterize aerosol optical properties• Validate Satellite & model aerosol retrievals• Synergism with Satellite obs., models sfc net

AERONET support for Field Campaigns

• East AIRE-east China• Base Asia-Thailand• Milagro-Mexico• AMMA-W. Africa• ABC- Pacific, Indian Oceans, East Asia• ARM sites• RAJO-MEGHA: Indo-Gangenic Plain (2007)• JAMEX: Asian Monsoon (2008-2010)• Seven Seas-S. Asia and SE Asia (2008?)• International Polar Year

AERONET Inversion: Ver. 2.0

• Unified Inversion products from combined Sphere/Spheroid models

• Dynamic surface reflectances– MODIS & IGBP Ecosystem reflectance (16 day

product) + generic BRDF– Cox-Munk for ocean sites (hybrid for coastal sites)– Snow and Ice from NISE product (daily)

• Forcing computations• Uncertainty Assessment w/ all products• Inversion Products for PP retrievals

AERONET-OC(Ocean Color)

• SeaPRISM (cimel)• Normalized water

leaving radiances (Lwn) QA➨

• Ship based AOD network– Class 1 & 2 waters– Ocean transects– Coastal Cruises

AERONET Science

• Aerosol Characterization• Algorithm Development

– AOD– Retrievals

• Validation• Synergism

Significant Enabling:

•‘AERONET Paper’- 605 citations since 1998,113 citations in 2006

•Staff citations of 4 keyAERONET papers since2000: 765

AERONET Directions• Collaboration and co-location w/ other networks and

observatories• Cloud Optical depth retrievals• Lunar Photometer• 2008-new Sun-Sky system to be phased in• 2008-CO2 network (±3ppm accuracy anticipated),

collaboration w/Heaps and Georgieva

– BAMGOMAS Synergy Tool➔– REASoN Measure for MEaSUREs ➔– Linking site data sets ESDRs➔

Status:11 active sites7 planned sites (in preparation)6 proposed sites (funding dependent)12 short-term field campaigns1 Ocean cruise (two cruises pre-dating MPLNET are available)

* Most sites are co-located with AERONET* Campaigns utilize SMART-COMMIT and/or MAARCO platforms

Goddard team + 11 Partners compose MPLNET:NASA LaRCNOAA ESRLNaval Research Lab - MontereyJapan’s National Institute of Polar ResearchSpain’s Instituto Nacional de Técnica Aeroespacial - INTA4 US Universities2 Korean Universities1 Taiwan University other partners pending

Objective: Long-term, local - regional - worldwide aerosol and cloud profile observations using common instrument & data processing in a federated network

Overview & Status

active sites

field campaigns

planned sites

proposed sites

former campaign, permanent site planned

former campaign, permanent site proposed

* line denotes research cruise

http://mplnet.gsfc.nasa.gov

Campbell, J. R., Autonomous full-time lidar measurements of polar stratospheric clouds at the South Pole, Ph. D. dissertation, Atmospheric Sciences Program, University of Alaska, Fairbanks, 189 pp, 2006.

Polar Stratospheric Cloud Product

New MPLNET Products Coming Soon:

•Aerosol• Level 2 (quality assured) extinction and Level 3 continuous extinction online

• currently available offline only on request• level 2 products recently validated, error <20% (Schmid et al. 2006)

• AERONET derived lidar ratio will be included in 1.5 & 2 products• Cirrus flag for AERONET AOD obs will be generated

• Clouds• Multiple cloud height product under development

• joint with Haeffelin et al. at LMD (STRAT algorithm)• includes thin cloud (cirrus) optical depth & PBL height

• Thick cloud optical depth product will come on-line• Chiu & Marshak collaboration• see example in right panel

• Polar Stratospheric Cloud Products• Campbell development during PhD• see example below

• CALIPSO Validation: we will provide orbit subsets over each site to all partners

GSFC: 10/29/2005

Chiu et al., Cloud optical depth retrievals from solar background “signal” of micropulse lidars, Geosci. Rem. Sens. Lett., accepted, 2007.

Thick Cloud OpticalDepth Product

Stratus -- MPL blocked

Clo

ud O

ptic

al D

epth

MPLNET People:

Principal Investigator:Judd Welton, NASA GSFC Code 613.1

Data Processing & Analysis:James Campbell, University of Alaska - Fairbanks

Larry Belcher, UMBC GSFC Code 613.1

Instrumentation & Network Management:Tim Berkoff, UMBC GSFC Code 613.1

Sebastian Stewart, SSAI GSFC Code 613.1Sandra Valencia, recently left project for grad school

GLAS Validation Activities:Jim Spinhirne, NASA GSFC Code 613.1

Judd Welton, Tim Berkoff

CALIPSO Validation Activities:Judd Welton, Tim Berkoff, James Campbell, Ken Sassen

AERONET & Synergy Tool Partnership:Brent Holben, NASA GSFC Code 614.4Dave Giles, NASA GSFC Code 614.4

NASA SMART-COMMIT Field Deployments:Si-Chee Tsay, NASA GSFC 613.2

Jack Ji, NASA GSFC 613.2

Site Operations & Science Investigations…. many network partners around the world

Other News Since the 2006 Aerosol Update:

• Publications:• Chiu et al., Cloud optical depth retrievals from solar background “signal” of micropulse lidars, Geosci. Rem. Sens. Lett., accepted, 2007.• Campbell, J. R., Autonomous full-time lidar measurements of polar stratospheric clouds at the South Pole, Ph. D. dissertation, Atmospheric Sciences Program, University of Alaska, Fairbanks, 189 pp, 2006.• Kuzmanoski, M., et al., Aerosol properties computed from aircraft-based observations during the ACE-Asia campaign: 2. A case study of lidar ratio closure, Aerosol Sci. Tech., accepted, 2007.• M. Shiobara, et al., Arctic experiment for the ICESat/GLAS ground validation with a Micro-Pulse Lidar at Ny-Alesund, Svalbard, Polar Meteorol. Glaciology, 20, 28-39, 2007.

• MPLNET will participate in the WMO sponsored Gaw Aerosol LIdar Observation Network (GALION) - an attempt at worldwide coordinated aerosol lidar measurements

• 1st implementation meeting is scheduled in Hamburg next month, whitepaper to be completed soon

• Our website is being redesigned, and the new site will be public soon. The new synergy tool will be integrated into our website for expanded data browsing, and new data product search and download tools will be provided (including multi-month downloads).

• MPLNET is funded by the NASA Radiation Sciences Program and the Earth Observing System.

• Recently renewed for operations through 2010

http://mplnet.gsfc.nasa.gov

SMART and COMMIT

Field Campaigns:

SCSMEXEOPACEDESIREPRIDESAFARIACE-ASIACRYSTAL-FACEARM AEROSOL IOPUAE2

EAST-AIREBASE-ASIA, 2006NAMMA, 2006

AERONET

Ground-based mobile laboratories armed with sophisticated instrumentation

Mission: • Earth Observing System (EOS) validation

• Innovative investigations

• Long-term atmospheric monitoring

Field deployment:

Bring 50+ more instruments to an AERONET site and turn it into a super-site

Measure for MEaSUREs:

• Ground-based data sets• Multi-Satellite Aerosol products• Assimilation aerosol products• MODIS surface albedos• Retrieved surface albedos from joint inversion• Ancillary products:

– Backtrajectories– 0 Hr Met forecasts

Create dynamic Earth System Data Records over ground-based sites