Lidar Laboratory Data Base

Detailed List of the Collected Data
Experiments of the Lidar Laboratory
Symbol	Date	Description	Lidar-Aer	Lidar-Chl	Lidar-Flu
HEL'92	October 1992	Baltic Shore Experiment at Hel Peninsula	Yes	No	No
BAEX-1	October 1993	International Shore Experiment in Lubiatowo	Yes	No	No
HEL'93	November 1993	Baltic Shore Experiment at Hel Peninsula	Yes	No	No
HEL'94(1)	January 1994	Baltic Shore Experiment at Hel Peninsula	Yes	No	No
MAY94	May 1994	R/V Oceania Cruise in South Baltic	Yes	Yes	No
HEL'94(2)	June 1994	Baltic Shore Experiment at Hel Peninsula	Yes	No	No
MOLO	September 1994	Baltic Shore Experiment in Sopot, Poland	Yes	No	No
BAEX-2	September 1994	International Shore Experiment in Lubiatowo	Yes	No	No
NOV94	November 1994	R/V Oceania Cruise in South Baltic	Yes	Yes	No
HEL'94(3)	November 1994	Baltic Shore Experiment at Hel Peninsula	Yes	No	No
HEL'95	February 1995	Baltic Shore Experiment at Hel Peninsula	Yes	No	No
MAR95	March 1995	R/V Oceania Cruise in South Baltic	Yes	Yes	No
CETN'95	May 1995	Baltic Shore Experiment in Cetniewo	Yes	No	No
JUN95	June 1995	R/V Oceania Cruise in South Baltic	Yes	Yes	No
BAEX-3	September 1995	International Shore Experiment in Lubiatowo	Yes	No	No
OCT95	October 1995	R/V Oceania Cruise in South Baltic	No	Yes	No
MAR96	March 1996	R/V Oceania Cruise in South Baltic	No	Yes	Yes
APR96	April 1996	R/V Oceania Cruise in South Baltic	No	Yes	Yes
MAY96	May 1996	R/V Oceania Cruise in South Baltic	No	Yes	Yes

Definitions of the measured values

Aerosol concentration: total number of suspended particles in volume unit of air. Measured every 7.5 m along the optical path of lidar impulse. The measurement is not direct: the value measured directly is the backscattered signal and output energy of the laser for several wavelengths (laser lines). Backscattered signal for a few wavelengths allows for the solution of the inverse lidar problem to get the concentration and rogue shape of concentration size distribution.

Aerosol Concentration Definition Parameters:

symbol: LIDAR-AER
physical unit: m^-3
range: 0 - 10⁹
precision of measurements: 20% with support of PMS data, 50% without PMS data
type of measurement: Vertical [V] , horizonthal [H] and tilted [T]
measurement instrument: Lidar FLS-12, receiver B

Spectra of sea-water fluorescence: emitted spectra of fluorescence of sea-water and Raman bands measured with the lidar system (1024 spectral canals). The sea surface is illuminated with a laser beam at a chlorophyll "a" absorption band. The ratio of the integrals of the chlorophyll "a" emission band to the Raman band allows the calculation of a relative index of chlorophyll fluorescnce. This index, when calibrated with chlorophyll "a" concentration values measured with the classic spectrophotometric method for some neighbouring stations, allows practically continuing measurement of chlorophyll "a" concentration. The concentration is a weighted average for surface water (with light transmission to the depth at laser wavelength used as the weight).

Index of sea-surface oil fluorescence: The index is calculated from the emitted spectra of fluorescence of sea-water and Raman bands measured with the lidar system which are used also for chlorophyll concentration studies. The value of the index is a weighted average for surface water (with light transmission to the depth at laser wavelength used as the weight). By dividing the fluorescence spectrum into bands of the fluorescent substance and backscattered water Raman one obtains the fluorescent coefficient of the oil (fluorescent substance). This expression mainly depends on the oil (fluorescent substance) concentration and is independent on many parameters as: laser power, distance from the object and sensor efficiency coefficients which are the same for both of bands. In this way we can determine the fluorescent coefficient of the oil which is the measure of the oil concentration.

The equipment:

Lidar System FLS-12 uses excimer laser ELI-130 to pump a dye laser DL_LIDAR as the light source, a 280 mm telescope with a polychromator and two receiver cameras (A and B) as the receiver. The parameters of the optical system are:

Data of Lidar Laboratory of IO PAS

The list and description of collected data

List of the experiments of the Lidar Laboratory:

Definitions of the measured values

The equipment:

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