DocOtak
commented
10 years ago Original comment by Carolina Berys-Gonzalez (Bitbucket: cberysgo, ).
Added XMISSCP to the parameters_descriptions table. The name and description can be updated or edited as seen fit or with new information.
Parameter_descriptions id 221
Original report by see (Bitbucket: sescher, GitHub: sescher).
Can XMISSCP be put into the programs so when checking the CTD files a warning will not be produced? Can it also be put in the parameters documentation?
-sharon
message from Rick Reynolds,
From: "Reynolds, Rick" rreynolds@ucsd.edu Date: February 19, 2014 1:27:06 PM PST To: "Swift, James" jswift@ucsd.edu, "Escher, Sharon" sescher@ucsd.edu Cc: "cchdo@ucsd.edu" cchdo@ucsd.edu Subject: RE: XMISSCP ???
Hi Sharon and Jim,
I would guess the following. "xmiss" is commonly used as an abbreviation for light transmission (scale T= 0-100%), which is the primary measurement output by a transmissometer. Many optical oceanographers prefer the so-called beam attenuation coefficient (c), which is simply the natural logarithmic transform of the transmission per unit pathlength (i.e., c = (-1/r) ln(T)) ). Thus, I would assume "xmisscp" probably is the beam attenuation coefficient calculated from the transmissometer; the ending "p" refers to the fact that it is the attenuation due to suspended particles alone and the contribution of water has been subtracted (part of the calibration process). Standard Seabird CTD software allows you to output either (or both) when processing.
I'm out of town at the moment, but happy to answer in more detail when back on Friday.
Regards, -rick