<div><p>See Platform deployments for cruise specific documentation</p>
<h2>Arabian Sea particulate absorption data</h2>
<pre>
Process Cruises 2, 6 and 7
Chuck Trees
Particulate absorption methodology
Arabesque 1 and Process Cruises 2, 6 and 7
Particulate matter was collected by filtering approximately 1.1 liters of
sample through 25 mm GF/F glass fiber filters having a nominal pore size
of 0.7 micrometers. Spectral absorption was measured on a Perkin-Elmer
Lambda 3b dual beam spectrophotometer. Diffuse absorption coefficients
for total particulate matter was calculated using the equations described
in the SeaWiFS Optical Protocols (Mueller and Austin, 1995) and a pathlength
amplification factor determined from two diatom cultures. The amplification
factor, beta, is calculated by plotting optical densities on a filter versus
optical densities in suspension and fitting a 2nd order polynomial to the
data. The Beta factor for the Lambda 3b is
ODs = 0.3090*(ODf) + 0.5473*(ODf)**2,
r**2 = 0.993.
Hot methanol was used to extract pigmented compounds from the filtered
sample, and the bleached filter was then measured to estimate detrital
absorption. The difference between the two measurements represent absorption
by phytoplankton pigments. The units for the particulate absorption are
in per meter; measurements have been scaled by the volume filtered and
the area of the filter on which the particles were deposited.
Charles C. Trees
Center for Hydro-Optics and Remote Sensing
San Diego State University
ctrees@chors.sdsu.edu
</pre></div>
Particulate absorption data
<div><p>Particulate absorption data</p></div>
particle_absorp
2564
particle_absorp
2010-06-16T16:40:39-04:00
2010-06-16T16:40:39-04:00
2020-03-30T14:08:12-04:00
urn:bcodmo:dataset:2564
Particulate absorption data from R/V Thomas G. Thompson TT053, TT045, TT054 cruises in the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea project)
false
Trees, C. C. (2002) Particulate absorption data from R/V Thomas G. Thompson TT053, TT045, TT054 cruises in the Arabian Sea in 1995 (U.S. JGOFS Arabian Sea project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version July 2, 2002) Version Date 2002-07-02 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/2564 [access date]
true
July 2, 2002
false
2002-07-02
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