From emerson@u.washington.edu Fri Apr 23 19:06:07 2004 Return-path: Received: from mailserver2.Princeton.EDU (imap2.Princeton.EDU [128.112.128.25]) by imap2.Princeton.EDU (iPlanet Messaging Server 5.2 HotFix 1.21 (built Sep 8 2003)) with SMTP id <0HWN009SEC6382@imap2.Princeton.EDU> for key@princeton.edu; Fri, 23 Apr 2004 19:06:07 -0400 (EDT) Received: from smtpserver1.Princeton.EDU ([128.112.129.65]) by mailserver2.Princeton.EDU (NAVGW 2.5.2.12) with SMTP id M2004042319060702563 for ; Fri, 23 Apr 2004 19:06:07 -0400 Received: from Princeton.EDU (postoffice01.Princeton.EDU [128.112.129.75]) by smtpserver1.Princeton.EDU (8.12.9/8.12.9) with ESMTP id i3NN66pJ022622 for ; Fri, 23 Apr 2004 19:06:06 -0400 (EDT) Received: from postoffice01.Princeton.EDU (localhost [127.0.0.1]) by Princeton.EDU (8.12.9/8.12.9) with SMTP id i3NN5vlf009160 for ; Fri, 23 Apr 2004 19:06:03 -0400 (EDT) Received: from Princeton.EDU ([128.112.129.75]) by postoffice01.Princeton.EDU (SAVSMTP 3.1.3.37) with SMTP id M2004042319060231837 for ; Fri, 23 Apr 2004 19:06:02 -0400 Received: from mxout4.cac.washington.edu (mxout4.cac.washington.edu [140.142.33.19]) by Princeton.EDU (8.12.9/8.12.9) with ESMTP id i3NN61J7009225 for ; Fri, 23 Apr 2004 19:06:01 -0400 (EDT) Received: from mailhost2.u.washington.edu (mailhost2.u.washington.edu [140.142.33.2]) by mxout4.cac.washington.edu (8.12.11+UW04.02/8.12.11+UW04.03) with ESMTP id i3NN5uc2016789 for ; Fri, 23 Apr 2004 16:05:56 -0700 Received: from emerson2 (D-128-208-72-174.dhcp4.washington.edu [128.208.72.174]) by mailhost2.u.washington.edu (8.12.11+UW04.02/8.12.11+UW04.03) with SMTP id i3NN5u0p021794 for ; Fri, 23 Apr 2004 16:05:56 -0700 Date: Fri, 23 Apr 2004 16:05:57 -0700 From: Steve Emerson Subject: Re: Stud97 To: Robert Key Message-id: <002801c42987$897a3d70$ae48d080@emerson2> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit X-Priority: 3 X-MSMail-priority: Normal X-Spam-Level: - X-Spam-KB: http://www.Princeton.EDU/spam X-Spam-Report: BAYES_10,QUOTED_EMAIL_TEXT,REFERENCES References: <81C092BB-9493-11D8-84D5-000A959C6F86@noaa.gov> Original-recipient: rfc822;key@princeton.edu Hi Bob, I can answer some of your questions now and for some I'll have to do some investigation. O2 values were mannually titrated by my technician Chuck Stump. CTD O2 data exists, but I think it is useless for anything quantitative the reasons you mentioned. I don't understand your question about pressure and depth. The Ship was the New Thompson; Cruise TTN-72 I can't remember about pre and post cruise calibration. I'll check with the ship guys. We did and exhaustive calibration of the CTD salinity using Auto Sal salinities and came to the conclusion that there should be no correction. (The Auto Sal measurements were done by a student and didn't become real high quality till near the end of the cruise.) Responsible person for the measurements. CTD, Emerson Nuts, Emerson O2, Emerson and Stump Regards, Steve ----- Original Message ----- From: "Robert Key" To: "Marilyn Roberts" Cc: "Sabine Mecking" ; "Steve Emerson" ; "Paul Quay" Sent: Friday, April 23, 2004 7:09 AM Subject: Re: Stud97 > Marilyn, Sabine, Paul and Steve, > > Steve and Paul: This is the middle of a discussion which you may be > able to add to regarding the STUD97 cruise. > The "files" in question came to me from Marilyn (who got her copy from > Paul) and from Sabine. I am trying to finish what has been started > (merge, qc, submit to CDIAC, etc.). Sabine recommended I use CTD rather > than bottle salinity, and I have done that. > > thx, > bob > > I manually went through the ids in the STUD97 cruise file from > Marilyn/Paul and corrected them to be unique. I then merged (as far as > possible) with the vanilla data from the file from Sabine. > > Remaining questions/comments: > > 1. The Marilyn/Paul file started at station 1. Sabine's started at > station 4. Does this imply that 1-3 were discarded as > substandard/practice somewhere during processing? > > 2. There is a decided offset in the tco2 data relative to WOCE > (P16N/P16C). The uniformity of the offset looks to me like a > calibration problem rather than a "change". Based on an earlier message > and the delta distribution these data have probably NOT been adjusted > to CRM. Marilyn, if you have Winn's e-mail I can help follow up on this > issue. Additionally, the following samples are a bit anomalous and need > a close investigation. I do not recommend changing the flag values at > this point: > 8-1-12 > 16-1-24 > 18-1-19 > 20-1-9 > > 3. I'd recommend flagging the following 3 alkalinity values with 3 > (station-cast-bottle) > 10-1-13 > 12-2-13 > 14-1-14 > and take a close look at 26-1-12 > > 4. Were the bottle oxygen values manually or automatically titrated? I > don't normally pay attention to CTD oxygen values because of the known > problems (hysteresis, calibration, spikes, etc.), but this is one case > where a consistency check is probably justified. Does anyone have the > CTD oxygen (if it exists)? > > 5. Pressure or Depth, chapter 2. The file Marilyn received from Chris > Winn had sample location labeled as "desired pressure" which Marilyn > truncated to "pressure" in her file with the merged carbon data. In > Sabine's file it is labeled as depth which she confirmed was the listed > label in the original file sent to her. The values in the two files are > identical for a significant fraction (but not all) of the samples. The > values are listed to a precision of Y.X which is consistent with > pressure by WOCE standard (WOCE depths are integer). Hopefully Paul or > Steve can resolve this issue. > > 6. Metadata details: > Chief Scientist S. Emerson > Ship Thompson ? > Cruise number TT??? (not listed at the Thompson web site) > Dates 11/1-23/1997 > Post-cruise CTD data calibration? > Person/group responsible for: > CTD (temperature, salinity, pressure) Emerson? > nutrients ? > oxygen ? > carbon (C. Winn) > other measurements if any ? > >