NCEAS Project 6340

SpecNet

  • John A. Gamon
  • Faiz Rahman


ActivityDatesFurther Information
Working Group23rd—25th January 2003Participant List  
Working Group1st—4th June 2003Participant List  
Working Group18th—22nd September 2006Participant List  

Abstract
SpecNet (Spectral Network) is a network of terrestrial flux tower sites where 'near surface' remote sensing is being conducted to improve our understanding of controls on the biosphere-atmosphere carbon exchange. SpecNet sampling closely matches the spatial and temporal scale of flux measurements, allowing a direct comparison of remotely sensed signals to factors affecting fluxes. We propose a SpecNet Working Group that will examine the optical, thermal, and flux data emerging from these sites. A primary goal will be to standardize the remote sensing instrument, algorithms, data processing protocols, and data products for comparative analyses. The next step will be to compare results across ecosystems to reveal contrasting controls on carbon flux. This effort will help link remote sensing to fluxes, assist in validating satellite products (e.g. NPP derived from the MODIS sensor), and will provide an improved scientific foundation for emerging carbon policy.

TypeProducts of NCEAS Research
Journal Article Castro-Esau, K.; Sanchez-Azofeifa, G. A.; Rivard, B. 2006. Comparison of spectral indices obtained using multiple spectroradiometers. Remote Sensing of Environment. Vol: 103. Pages 276-288.
Journal Article Chen, Xuexia; Vierling, Lee. 2006. Spectral mixture analyses of hyperspectral data acquired using a tethered balloon. Remote Sensing of Environment. Vol: 103. Pages 338-350.
Journal Article Cheng, Yufu; Gamon, John A.; Fuentes, D.; Mao, Zhiyan; Sims, Dan; Qiu, Hong-lie; Claudio, Helen; Huete, Alfredo; Rahman, Abdullah F. 2006. A multi-scale analysis of dynamic optical signals in a Southern California chaparral ecosystem: A comparison of field, AVIRIS and MODIS data. Remote Sensing of Environment. Vol: 103. Pages 369-378.
Journal Article Claudio, Helen; Cheng, Yufu; Fuentes, D.; Gamon, John A.; Luo, Hongyan; Oechel, Walter C.; Qiu, Hong-lie; Rahman, Abdullah F.; Sims, Dan. 2006. Monitoring drought effects on vegetation water content and fluxes in chaparral with the 970nm water band index. Remote Sensing of Environment. Vol: 103. Pages 304-311.
Journal Article Foley, Sheri; Rivard, B.; Sanchez-Azofeifa, G. A.; Calvo, Julio. 2006. Foliar spectral properties following leaf clipping and implications for handling techniques. Remote Sensing of Environment. Vol: 103. Pages 265-275.
Journal Article Fuentes, D.; Gamon, John A.; Cheng, Yufu; Qiu, Hong-lie; Mao, Zhiyan; Sims, Dan; Rahman, Abdullah F.; Oechel, Walter C.; Luo, Hongyan. 2006. Mapping carbon and water vapor fluxes in a chaparral ecosystem using vegetation indices derived from AVIRIS. Remote Sensing of Environment. Vol: 103. Pages 312-323.
Journal Article Gamon, John A.; Cheng, Yufu; Claudio, Helen; MacKinney, Loren; Sims, Dan. 2006. A mobile tram system for systematic sampling ecosystem optical properties. Remote Sensing of Environment. Vol: 103. Pages 246-254.
Journal Article Gamon, John A.; Rahman, Faiz; Dungan, Jennifer L.; Schildhauer, Mark P.; Huemmrich, Karl F. 2006. Spectral network (SpecNet) - what is it and why do we need it?. Remote Sensing of Environment. Vol: 103. Pages 227-235.
Presentations Gamon, John A. 2008. Living on the Red Edge: Integrating Remote Sensing with Carbon through FLUXNET and SpecNet. Canadian Carbon Programme Meeting, March 2008. Calgary.
Presentations Gamon, John A. 2008. SpecNet. July 2008. Toolik Lake, AK.
Presentations Gamon, John A. 2009. SpecNet Workshop – Introduction. Canadian Society of Remote Sensing, June 2009. Alberta.
Journal Article Hill, Michael J.; Held, A. Alexander; Leuning, Ray; Coops, Nicholas; Hughes, Dale; Cleugh, H. A. 2006. MODIS spectral signals at a flux tower site: Relationships with high-resolution data, and CO2 flux and light use efficiency measurements. Remote Sensing of Environment. Vol: 103. Pages 351-368.
Journal Article Leuning, Ray; Hughes, Dale; Daniel, Paul; Coops, Nicholas; Newnham, Glenn. 2006. A multi-angle spectrometer for automatic measurement of plant canopy reflectance spectra. Remote Sensing of Environment. Vol: 103. Pages 236-245.
Journal Article Oliphant, Andrew; Susan, C.; Grimmond, B.; Schmid, Hans-Peter; Wayson, Craig A. 2006. Local-scale heterogeneity of photosynthetically active radiation (PAR), absorbed PAR and net radiation as a function of topography, sky conditions and leaf area index. Remote Sensing of Environment. Vol: 103. Pages 324-337.
Journal Article Sims, Dan; Luo, Hongyan; Hastings, Steven J.; Oechel, Walter C.; Rahman, Abdullah F.; Gamon, John A. 2006. Parallel adjustments in vegetation greenness and ecosystem CO2 exchange in response to drought in a Southern California chaparral ecosystem. Remote Sensing of Environment. Vol: 103. Pages 289-303.
Journal Article Vierling, Lee; Fersdahl, Mark; Chen, Xuexia; Li, Zhengpeng; Zimmerman, Patrick. 2006. The Short Wave Aerostat-Mounted Imager (SWAMI): A novel platform for acquiring remotely sensed data from a tethered balloon. Remote Sensing of Environment. Vol: 103. Pages 255-264.