LAI & PAR Data: Light Bar - KSU (FIFE)

The purpose of the Leaf Area Index and PAR Determined from KSU Light Bar Measurements study was to collect extensive non-destructive measurements of Leaf Area Index (LAI) at the flux sites during IFC-5 (August 1989). These data were collected at thirteen locations which were coincident with the surface flux measurements within the FIFE study area from July 3, 1989 through August 18, 1989. The various fractions of the Photosynthetically Active Radiation (PAR) (i.e., diffuse, reflected, transmitted and total) were measured using a Line Quantum meter from LI-COR Inc. From these fractions the ratio of reflected to total incoming PAR was computed. LAI can be estimated from light bar measurements of PAR transmittance from measurements above and below a vegetation canopy. The use of the light bar allows rapid, multiple, and repeatable measurements of LAI at the FIFE sites. This type of measurements could not be done using destructive measurements of LAI.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 22, 2026, 22:18 (UTC)
Created April 1, 2025, 16:50 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 2c0dda73-ced0-4997-bcdf-5a21c55e67f5
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/41
license https://www.usa.gov/government-works
modified 2026-06-15T22:16:00Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 5d9568801ec7113875ee3e9b83aff3d19f40dc2da55f883069b0c4ea2c5a4372
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -96.61, "NorthBoundingCoordinate": 39.1, "EastBoundingCoordinate": -96.45, "SouthBoundingCoordinate": 38.98}]]
temporal 1989-07-03/1989-10-31
theme {"Earth Science"}