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BioSAR 30  An airborne radar for the mapping of forest biomass and embedded carbon Presentation for the Third USDA Symposium Greenhouse Gases & Carbon.

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Presentation on theme: "BioSAR 30  An airborne radar for the mapping of forest biomass and embedded carbon Presentation for the Third USDA Symposium Greenhouse Gases & Carbon."— Presentation transcript:

1 BioSAR 30  An airborne radar for the mapping of forest biomass and embedded carbon Presentation for the Third USDA Symposium Greenhouse Gases & Carbon Sequestration in Agriculture and Forestry March 23, 2005 Zimmerman Associates, Inc (ZAI) BioSAR 30 

2 BioSAR 30  Acknowledgements Dr. Marc Imhoff, NASA GSFC Dr. Roger Dahlman, DOE BER Mr. John Litynski, DOE FE

3 BioSAR 30  Overview Radar (RF) Remote Sensing of Biomass NASA Experiments DOE Refinements – BioSAR 30 TM February 2005 Mission Features, Advantages, Benefits Spin-Off Company – Terresense

4 BioSAR 30  Radar Remote Sensing of Biomass Radar energy is reflected by leaves Radar receivers are saturated by these reflections Beyond saturation, measurement not possible Radar Biomass load limits at saturation –X-Band (10 GHz –  1”) ~ 10 tons/ha –P-Band (500 MHz -  2’) ~ 100 tons/ha

5 BioSAR 30  Location of World Biomass 90 % of world biomass resides in stands of over 100 tons/ha For Radar remote sensing of 90% of world biomass need VHF frequency ~ 100 MHz,  10’

6 BioSAR 30  Basic BioSAR 30  Technology Airborne Small Synthetic Aperture Radar (SAR) Operates at MHz, ~ 10’ Low power < 1 watts Data collected at 166 KHz Data tagged with dGPS time and location Radar footprint is a 600 mt circle (80 acres) Processed cell size 30 x 300 meters (1 acre)

7 BioSAR 30  NASA C-130 In Flight BioSAR 30 TM antenna

8 BioSAR 30  Biomass (tons/ha) Site # Latitude Longitude Biomass (tons/ha) Smithsonian Tropical Research Institute Test Sites Biomass 200 to 300 tons/ha (above-ground, dry, biomass).

9 BioSAR 30  BioSAR Estimated Biomass vs.Ground Truth Ground Truth Biomass, tons/hectare Estimated Biomass, tons/hectare ±10% of Total (total above-ground dry biomass)

10 BioSAR 30  BioSAR-Generated Biomass Map of the Panama Canal Zone, Panama ° N Lat ° E Long. 9.20° N Lat ° E Long. Canal Above-ground dry biomass (Metric Tons/Hectare)

11 BioSAR 30  DOE Refinements - BioSAR 30 TM DOE Grants –Improved processing algorithms –Improved data storage and archiving –Addition of Laser Radar –Addition of external calibration device

12 BioSAR 30  BioSAR 30 TM Installed in Twin Otter Aircraft

13 BioSAR 30  BioSAR 30 TM Operators Station

14 BioSAR 30  BioSAR 30 TM Antenna

15 BioSAR 30  DOE Mission to North Carolina February 17, Sites selected – Each Site ~ 100 acres –Collaboration with Weyerhaeuser Corp. –GPS waypoints for each site computed –North-South, East-West Leg for each site –All sites flown in one day, repeated next day

16 BioSAR 30  Aerial Photograph of Site 19

17 BioSAR 30  BioSAR 30 TM Flight Lines - Site 19

18 BioSAR 30  Data Points and Biomass for Site 19

19 BioSAR 30  Video View of Site 19

20 BioSAR 30  Observations vs. Ground Truth Feb 17 Feb 18 N-S E-W N-S E-W 2003 Ground Truth ~ 160 tons/ha Site 19

21 BioSAR 30  30 Square Mile Survey - 1 Day 5.5 Miles 250 Meters – 36 transects

22 BioSAR 30  Features, Advantages, Benefits FeatureAdvantageBenefit 1.Time Required 2.Coverage 3.Cost 4.Platform 5.Accuracy Remote vs. manual 100% vs. 1% survey ~ $2 vs. $10 per acre Aircraft vs. vehicle Measurement vs. approximation Hours vs. weeks Reproducibility Reduced costs Accessibility Better Results

23 BioSAR 30  New Company –Spin-Off from ZAI –Offering commercial BioSAR 30  services $2.00/acre (Minimum $50K) + ferry charges 30 sq. miles/day (~ 19K acres, 7.8K ha) –Product will be GIS/GPS Overlays: Biomass/Carbon –Brochures and details available –Taking orders now

24 BioSAR 30  Points of Contact ZAI: –Patrick W. Johnson Terresense: –Marie Sparrow


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