Imnavait Creek spring activities -2013

Jun
05

An unusually late, cold spring has delayed snow melt in northern Alaska.  Our site visit this year included re-installing the methane sensor, calibrating and repairing analyzers and communications equipment, all in winter-like conditions despite it being late May.  This will be the second summer of continuous CH4 flux measurement at the Fen moist-acidic tundra site.  The instrument was set up well ahead of the melt, so we hope to get some exciting data.  Our webcams are all online now, and images are still being harvested by the PhenoCam network.

May 23, 2013 Imnavait Cr:

 

May 23, 2013 Imnavait Cr:

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Webcam image archives now available

Apr
26

See our data access page to download archived webcam images from past years.   Currently, these are rather large files for an entire calendar year.  Contact us if you would like a specific date range or have trouble downloading the archives.

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AON data presented at NACP/AmeriFlux meetings

Feb
01

Dr. Eugenie Euskirchen is presenting CO2 and CH4 data summaries from the Imnavait Creek sites at the 2013 AmeriFlux/NACP meetings in Albuquerque, New Mexico.  Her poster is available on our Presentations page, under the Publications menu.

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Phenology Webcams join PhenoCam Network

Nov
12

Images from our four webcams at Imnavait Creek join the PhenoCam network.  This is an effort to improve understanding of vegetation phenology via a network of canopy cameras.  Images from our phenology webcams begin in June 2012 and can now be found in the 'Affiliated sites' section of the PhenoCam website: http://phenocam.sr.unh.edu/webcam/gallery/

Examples from the Ridge Phenocam, including some caribou passing through:

 

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Collaborative study from Imnavait Creek flux sites published

Oct
03

Research examining seasonal and spatial variation in plot-level CO2 fluxes at our flux tower sites will be published in the Journal of Geophysical Research.  Lead author and AON collaborator Dr. Anja Kade classified tundra vegetation types within the 3 flux tower footprints and then measured chamber-level CO2 fluxes in dominant vegetation types during both the growing season and winter months.   Scaling net ecosystem exchange rate of CO2 from plot-level to tower-level produced generally good agreeement between methods during summer, but not during wintertime.  
Read the abstract or download the pdf from our bibiliography page.

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