This dataset provides chlorophyll fluorescence measurements made on pine and spruce needle tissues at the Niwot Ridge AmeriFlux Core site (US-NR1) near Nederland, Colorado, USA, during the summers of 2017 and 2018. Two types of measurements were made using pulse-amplitude-modulation (PAM) fluorometry: the photosystem II (PSII) operating efficiency in the light (Fq'/Fm' at variable light levels), and the maximum quantum efficiency of PSII photochemistry (Fv/Fm) on dark-acclimated tissues. Chlorophyll fluorescence measurements were made to determine seasonality of photosynthetic performance at the needle level.
Science Keywords: | |||
Spatial Extent: | Points: Lat: Lon: |
Data Format(s): | Distribution: Not provided |
Temporal Extent: | Platform(s): | FIELD SURVEYS | |
Data Center(s): | ORNL_DAAC | Instrument(s): | PAM |
Version: | 1 |
10.3334/ORNLDAAC/1722
https://doi.org
Creation | |
Last Revision |
2
Derived geophysical variables at the same resolution as L1 source data
Complete
Project Short Name | Campaigns | Project Dates |
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CMS | No campaigns listed. | No dates provided. |
Coverage Type | Zone Identifier | Geometry | Granule Representation |
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HORIZONTAL | CARTESIAN | CARTESIAN |
ORNL DAAC User Services Office, P.O. Box 2008, MS 6407, Oak Ridge National Laboratory
Oak Ridge,
Tennessee
37831-6407
(865) 241-3952
There are no listed data contacts for this collection.
Format: Not provided
Format Type: Native
Fees: 0