ground-based aerosol measurements update: aeronet, mplnet, smart-commit
DESCRIPTION
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. Provide a long term data set to: Characterize aerosol optical properties - PowerPoint PPT PresentationTRANSCRIPT
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