Seminar and Events Schedule

Note: During the Fall 2020 semester, the Ecoinformatics Seminar will  meet on Mondays from 11:30-12:20 via Zoom. If you are interested in getting on the list to receive the Zoom link, please contact Dr. Katharyn Duffy

The calendar below lists all Ecoinformatics and related events, including our weekly seminar. The weekly Ecoinformatics Seminar series includes a full schedule of world-class speakers who will present their research and take some time to talk about career development and how they got where they are today. Please join us every week for this exciting seminar series!

 

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  • Seminar: Arturo Sanchez

    Seminar: Arturo Sanchez

    11:30 am-12:30 pm
    January 11, 2021

    Validating MODIS fPAR in a Tropical Dry Forest using Wireless Sensor Networks
    Arturo Sanchez-Azofeifa, Ph.D., P.Eng. SM IEEE
    Centre for Earth Observation Sciences, Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada T6G2E3
    Email: Arturo.sanchez@ualberta.ca

    The fraction of Photosynthetic Active Radiation (fPAR) is a component of determining canopy photosynthesis and is a crucial component of determining carbon flux product. The MODIS fPAR product has been shown to work well in the Northern Hemisphere but has not been validated in the Tropical Dry Forest which encompasses 42% of all tropical forests. This study uses a Wireless Sensor Network (WSN) to produce a representative in-situ Green fPAR product in the Santa Rosa National Park Environmental Monitoring Super Site for validating the MODIS fPAR product between 2013-2017.  This study implements 2-flux fPAR estimation for the in-situ product before subsequently using the Savitsky-Golay derivate-based smoothing, univariate-wavelet transforms, and cross-wavelet analysis to compare the phenometric variables between in-situ and MODIS fPAR.  Results indicate that the MODIS fPAR products are incapable of accurately predicting the onset of green-up or senescence, with detection of these events 18-55 days; however despite these temporal offsets, the annual and inter-seasonal patterns are replicated in both the MODIS and in-situ products with significance (p<0.05).  These patterns break down under extreme water conditions, with the effects of droughts under-predicted by MODIS and hurricane effects not represented at all in the MODIS data.

    Additionally, small scale fPAR changes and intra-seasonal differences are not significantly replicated by the MODIS fPAR products. This study, therefore, illustrates the inflexibility and insensitivity of the MODIS observations, and therefore these products should not be relied upon to give feedback to rapid changes in the phenological cycle of Tropical Dry Forests and more important provide important challenges to efforts to quantity essential climatic variables in tropical dry forest environments.

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  • Martin Luther King, Jr. Day (NAU closed)

    Martin Luther King, Jr. Day (NAU closed)

    All day
    January 18, 2021

    No additional detail for this event.

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  • Seminar: Chris Lant

    Seminar: Chris Lant

    11:30 am-12:30 pm
    January 25, 2021

    Utah State

    Title: Human appropriation of net primary productivity: a critical component of the U.S. food-energy-water system

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