Appendix Table 3. Summaries of Total Dissolved Inorganic Carbon Data for Replicate Sea Water Samples Tables 3a to 3e summarize the laboratory DIC measurements by vacuum extraction/manometry on replicate samples of sea water collected on the five expedition legs of 1991, presented in the following order: Table 3a. TUNES Leg 1 WOCE Line P17C Table 3b. TUNES Leg 2 WOCE Lines P17S,P16S Table 3c. TUNES Leg 3 WOCE Line P16C Table 3d. Meteor 15 WOCE Line A9 Table 3e. Meteor 18 WOCE Line A1E Comments on each column in the table follow: LEG to SAMPLE The identifying information for each Niskin bottle sampled at STN DATE sea. EXTRAC The date of extraction of CO2 gas from an aliquot of sea water DATE taken from a given sample bottle is listed. ANALYSIS The date of manometric analysis of the extracted CO2 gas sample DATE is listed. Usually, the date is within one week of the date of extraction. In a few case the intervening time period is longer. See, for example, several stations on TUNES Leg 3, such as Station 238. In April 1992, the quartz spiral manometer was malfunctioning and the new instrument was still under development. Gas extractions were stored for 2 to 3 months sealed in glass tubes before manometric analysis. MANO The manometric system used to analyze the CO2 gas extraction TYPE is identified: M, the mercury manometer; S, the Ruska XR38 quartz spiral manometric system; E, the electronic manometric system using the Ruska DDR6000 quartz spiral pressure source and differential pressure transducer. SAMPLE The label number for the individual replicate sample bottle BOTTLE filled at sea is listed. The prefix "S" indicates a standard 500 ml Corning borosilicate glass bottle with a hollow stopper (individually lapped to the bottle joint with carborundum grit) equipped with an aluminum bale type fixture for holding the stopper in its sealed position. The prefix "R" indicates a 500 ml borosilicate glass bottle equipped with a standard taper (24/40 size) joint and solid stopper with a Rodawiss plastic knurled nut system for holding the stopper. RUN This number indicates whether more than one manometric measurement of a given gas sample was made on each manometer. See, for example, TUNES Leg 2, Station 180, where two measurements on the electronic (E) manometer were made during its initial period of use. Appendix Table 3. Summaries of Total Dissolved Inorganic Carbon Data for Replicate Sea Water Samples (cont.) FLAG The flag code identifies runs that are rejected from further consideration due to identifiable experimental reasons. The flags used have the following meanings: F, evidence indicated that the sample had no mercuric chloride added (see text for further discussion); G, the greased bottle seal showed signs of a severe bottle leak (usually, such bottles were not analyzed); EX, a general flag for some other experimental rejection, such as a procedural extraction error or an equipment malfunction. S.I.O The DIC in micromoles per kilogram of sea water is listed for RUN an individual manometric run of a CO2 gas extraction. RUN The run difference for two runs as discussed above, if both DELTA runs are unflagged. BOTTLE The average bottle DIC for unflagged runs. In most cases DIC (single runs), the S.I.O. RUN and the BOTTLE DIC are identical. In cases where gas extractions were analyzed on both the mercury manometer (first) and one of the other manometers, both DIC's are listed (see, for example, the data from TUNES Leg 1 on Table 3a from Station 74 on). BOTTLE The difference between two bottles collected from a single DELTA Niskin bottle is listed. As noted above for cases of measurement on two manometers, the differences for both manometers are listed. For further analysis and comparisons of data, the mercury manometer data are selected. "NISKIN" Here is listed the average S.I.O. laboratory DIC result for AVG water from a particular Niskin bottle sampled at sea. Again, as discussed above, the averages for both manometers are listed for those cases where gas samples were measured on two manometers. {INSTITUTION} This column lists the shipboard DIC result from a SOMMA or DIC other coulometric system. The institution abbreviations indicate the shipboard CO2 analytical group operating on that expedition leg, as follows: WHOI, the group of Dr. Catherine Goyet, P.I., and Dr. Edward Peltzer of Woods Hole Oceanographic Institution; LDEO, the group of Drs. Taro Takahashi, P. I., and David Chipman of Lamont Doherty Earth Observatory; BNL, the group of Dr. Douglas Wallace, P.I., and Mr. Ken Johnson, of Brookhaven National Laboratory. No inference should be made from the listed data as to the imprecision of the data. Dr. Takahashi estimates the overall imprecision of the LDEO shipboard DIC data as +/- 2. umol/kg (one sigma for a single measurement). Here we choose to list data to one more place than is significant, and thank Dr. Takahashi for his indulgence. {INSTITUTION} The difference between the shipboard DIC result and the - S.I.O. laboratory replicate sample average is listed. Note again that for cases where gas samples are measured on two manometers, the differences for both manometers are listed. Appendix Table 3. Summaries of Total Dissolved Inorganic Carbon Data for Replicate Sea Water Samples (cont.) NOTE: At the end of the Table 3 section for each leg is a note Dilution Factor detailing the multiplicative dilution factor applied to account for the addition of the HgCl2 poison solution to the S.I.O. replicate sample bottles. The nominally 500 ml bottles actually hold about 585 ml. Thus for the addition of 0.1 ml of saturated aqueous HgCl2, a dilution factor of 1.00017 is calculated. The shipboard data listed in the last two columns have also been appropriately corrected for dilution by each shipboard analysis group.