Conifer Needle Chlorophyll Fluorescence, Niwot Ridge, Colorado, USA, 2017-2018
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.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"026:00"
]
|
| contactPoint |
{
"fn": "Earthdata Forum",
"@type": "vcard:Contact",
"hasEmail": "mailto:earthdata-support@nasa.gov"
}
|
| description | 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. |
| distribution |
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|
| identifier | 10.3334/ORNLDAAC/1722 |
| keyword |
[
"earth-science-ecological-dynamics-biosphere-ecosystem-functions-photosynthesis",
"earth-science-ecosystems-biosphere-terrestrial-ecosystems-forests",
"earth-science-vegetation-biosphere-chlorophyll",
"earth-science-vegetation-biosphere-leaf-characteristics"
]
|
| landingPage | https://search.earthdata.nasa.gov/search?q=Niwot_Ridge_CNPAM_Fluorescence_1722&ac=true |
| modified | 2026-02-17 |
| programCode |
[
"026:000"
]
|
| publisher |
{
"name": "ORNL_DAAC",
"@type": "org:Organization"
}
|
| spatial |
"[[{"WestBoundingCoordinate":-105.55,"NorthBoundingCoordinate":40.03,"EastBoundingCoordinate":-105.55,"SouthBoundingCoordinate":40.03}],"CARTESIAN"]"
|
| temporal | 2017-07-10/2017-07-10 |
| theme |
[
"Earth Science"
]
|
| title | Conifer Needle Chlorophyll Fluorescence, Niwot Ridge, Colorado, USA, 2017-2018 |
