Dr. Lucy R. Hutyra Profile

Dr. Lucy R. Hutyra

at Boston Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 14 May 2019 Paper

Solar-induced fluorescence retrievals in the context of physiological, environmental, and hardware-based sources of uncertainty

Julia Marrs, Lucy Hutyra, David Allen

Proceedings Volume 10986, 109860F (2019) https://doi.org/10.1117/12.2520457

KEYWORDS: Spectroscopy, Signal to noise ratio, Absorption, Luminescence, Calibration, Vegetation, Sensors, Carbon, Signal detection, Atmospheric corrections

Read Abstract +

The terrestrial biosphere is a crucial sink for anthropogenic emissions of carbon to the atmosphere, but is also the source of the largest uncertainties in estimated global carbon budgets. Numerous tower- and satellite-based platforms have recently been established to measure solar-induced fluorescence (SIF), which, as a proxy for photosynthesis, shows great promise for constraining global estimates of gross primary productivity. Nonetheless, published SIF retrievals span two orders of magnitude, illustrating an opportunity for improved characterization of the SIF signal in the context of instrument noise, detector calibrations and limitations, viewing geometry, and typical signal magnitude. In 2017, the Forested Optical Reference for Evaluating Sensor Technology (FOREST) site was established at the National Institute of Standards and Technology (NIST) as a test-bed for SIF instrument intercomparison and calibration methods development. Further, we empirically characterize the physiological and ecological meaning of SIF by directly linking to carbon exchange with an extensive suite of ground measurements. Following optimizations to our SIF spectrometer deployment, we find that deviations from ideal measurement conditions, including low light or intermittent cloud cover, introduce significant noise outside even dramatic physiological manipulations. It is critical that common standards are developed for SIF measurement systems to ensure validation of data quality and clear linkages to physiological and biophysical parameters. SIF is a promising technique to improve measurement and understanding of local to global trends in primary productivity, but data quality control is a key challenge to tackle with the rapid deployment of new sensors across the globe. This work is an initial evaluation of sensitivities of SIF signals to hardware and methodologies.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years