Dataset: NASA_overflights
Deployment: NASA_P-3B

NASA Airborne Oceanographic Lidar (AOL)

Principal Investigator:

Dr Frank E. Hoge (National Aeronautics and Space Administration, NASA)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. JGOFS Arabian Sea (Arabian Sea)

Version:

July 2, 1997

Version Date:

1997-07-02

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/450732/data

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Description

NASA Airborne Oceanographic Lidar (AOL)

Methods & Sampling

Dataset acquisition description

  PI:              Frank Hoge
  of:              NASA
  dates:           July 06, 1995 to July 21, 1995
  location:        N: 23.5286  S: 15.44155  W: 54.24402  E: 65.85029
  dataset:         NASA Airborne Oceanographic Lidar (AOL)
  project:         Arabian Sea, July 1995, NASA P-3B aircraft

The originating PI provided a link to the NASA Airborne Oceanographic Lidar (AOL) Homepage (http://aol.wff.nasa.gov/) but this site is no longer available.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Funding

Award Number	Funding Source
unknown Arabian Sea NASA	National Aeronautics & Space Administration

Instruments

Light Detection and Ranging System

Supplied Description:

NASA Airborne Oceanographic Lidar(AOL). The Light Detection and Ranging (LIDAR) system is a laser sounder located on the Lander deck. It is composed of a sensor and electronics assembly. The LIDAR transmitter uses a Galium-Aluminum-Arsenic laser which emits energy in pulses at a constant rate and wavelength. The LIDAR has two sounding modes: active and acoustic.

Instrument Type

Generic Name: Light Detection and Ranging System

Acronym: LIDAR

Community Identifier: http://vocab.nerc.ac.uk/collection/P10/current/GI000288/

Generic Description:

The Light Detection and Ranging (LIDAR) system is an active remote sensing system that can be operated in either a profiling or scanning mode using pulses of light to illuminate the terrain. LIDAR data collection involves mounting an airborne laser scanning system onboard an aircraft along with a kinematic Global Positioning System (GPS) receiver to locate an x, y, z position and an inertial navigation system to monitor the pitch, roll, and heading of the aircraft. By accurately measuring the round trip travel time of the laser pulse from the aircraft to the ground, a highly accurate spot elevation can be calculated. Depending upon the altitude and speed of the aircraft along with the laser repetition rate it is possible to obtain point densities that would likely take months to collect using traditional ground survey methods (June 2010 definition from: http://www.ngs.noaa.gov/RESEARCH/RSD/main/lidar/lidar.shtml).The LIDAR transmitter uses a Galium-Aluminum-Arsenic laser which emits energy in pulses at a constant rate and wavelength. The LIDAR has two sounding modes: active and acoustic.

Note: A LIDAR system was used during US JGOFS Arabian Sea cruises to acquire SST, DOM and fluorometric pigment data, but there are also bathymetric LIDAR systems.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
year	year of flight	YYYY	year
flight_day	day flight occurred	MMDD	no_bcodmo_term
flight_segment	different legs of the flight	hhmmss	no_bcodmo_term
time	seconds of the day since midnight		no_bcodmo_term
lat	latitude (negative = south)	decimal degrees	lat
lon	longitude (negative = west)	decimal degrees	lon
temp_SST	temperature from infrared radiometer	decimal degrees C	no_bcodmo_term
fluor_CDOM	dissolved organic matter stimulated by UV (355 nm) laser. Emission is measured at 450 nm and normalized to the water Raman emission at 404 nm. This is a relative measurement.		no_bcodmo_term
fluor_PUB	phycoerythrin-phycouribilin complex stimulated by green (532 nm) laser. Emission is measured at 570 nm and normalized to the water Raman signal at 650 nm. This is a relative measurement.		no_bcodmo_term
fluor_PEB	phycoerythrin fluorescence stimulated by green (532 nm) laser. Emission is measured at 585 nm and normalized to the water Raman signal at 650 nm. This is a relative measurement.		no_bcodmo_term
chl	chlorophyll concentration converted from chlorophyll fluorescence. The chlorophyll fluorescence was stimulated with a 532 nm laser and emission measured at 685 nm. The emission was normalized to the water Raman signal at 650 nm and the relative measurement converted to chlorophyll concentration. This is a good faith final calibration.	micrograms/liter	no_bcodmo_term

Database

Contribute Data

Dataset: NASA_overflights
Deployment: NASA_P-3B

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: NASA_overflightsDeployment: NASA_P-3B

Dataset acquisition description

Dataset Processing Description

Dataset: NASA_overflights
Deployment: NASA_P-3B