Surface underway pCO2 from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)

<p>CO2 - Surface Underway pCO2 Reduced<br />
<br />
<i>Data columns:</i><br />
Note: Contains additional information about the individual parameters<br />
beyond what is entered in the BCO-DMO parameter metadata<br />
<br />
DOY_UTC: Decimal day of year on UTC. 0000h on 1Jan = 1.00000.<br />
Time stamp from CPU clock, set automatically by a web-based NTP server.<br />
<br />
Lat: signed latitude in decimal degrees<br />
<br />
Lon: signed longitude in decimal degrees<br />
<br />
SST: Sea Surface Temperature, as determined by RHB surface intake sensor.<br />
<br />
Equilibrator T was about 0.8&deg; warmer than SST, and lagged SST by about 30 seconds.<br />
SSS: Salinity (PSS) as measured by the SBE45 TSG unit plumbed to the outlet of the equilibrator.<br />
<br />
pCO2_SST: CO2 partial pressure in &micro;atm, at SST. xCO2 of any kind, wet or dry, is not reported.<br />
<br />
P_atm_kPa: The ambient atmospheric pressure recorded by the LI840, directly vented to the lab air.<br />
<br />
xCO2atm_wet_ppm: The mixing ratio of CO2 in ambient air at ambient humidity,<br />
drawn from an inverted u-tube intake with a shrouded intake on the 02 deck.<br />
Raw data was calibrated exactly as for equilibrator pCO2, but not corrected for<br />
pressure. Periodic spikes in the data were most likely associated with exhaust<br />
contamination, and account for all observations above 385 ppm. Final data have <br />
ejected values higher than 385 ppm for this field.<br />
<br />
Vxmis: Uncalibrated voltage from Wetlabs CStar transmissometer.<br />
<br />
VO2: Uncalibrated voltage from SBE43 O2 sensor.<br />
<br />
VFl: Uncalibrated voltage from WetLabs WetStar chlorophyll fluorometer.<br />
<br />
Bad data: Bad data were replaced by NaN.<br />
Note: NaN replaced by BCO-DMO standard of 'nd' in BCO-DMO processing</p>

<p>CO₂ - 表层走航式二氧化碳分压（pCO₂）缩减数据集<br /><br /><i>数据列说明：</i><br />注意：本数据集包含的单个参数补充信息，多于BCO-DMO参数元数据中录入的内容<br /><br />DOY_UTC：基于协调世界时（UTC）的十进制年积日。1月1日0000时对应1.00000。时间戳由CPU时钟生成，通过基于网页的网络时间协议（NTP）服务器自动校准。<br /><br />Lat：带符号的十进制纬度<br /><br />Lon：带符号的十进制经度<br /><br />SST：海表温度（Sea Surface Temperature），由RHB表层取水传感器测定。<br /><br />平衡器温度较海表温度偏高约0.8℃，且滞后海表温度约30秒。<br />SSS：盐度（PSS），由安装在平衡器出水口的SBE45温盐传感器（TSG）测定。<br /><br />pCO₂_SST：海表温度下的二氧化碳分压，单位为微标准大气压（μatm）。未报告任何形式的湿基或干基二氧化碳摩尔分数（xCO₂）。<br /><br />P_atm_kPa：由LI840分析仪记录的环境大气压力，该传感器直接与实验室空气连通。<br /><br />xCO₂atm_wet_ppm：环境湿度下的大气二氧化碳混合比，采样进气口为安装在02甲板的带护罩倒U型管。原始数据的校准流程与平衡器法测定的pCO₂完全一致，但未进行压力校正。数据中出现的周期性尖峰大概率与排气污染相关，对应所有高于385ppm的观测值。本数据集已剔除该字段中高于385ppm的异常值。<br /><br />Vxmis：来自Wetlabs CStar透射计的未校准电压信号<br /><br />VO₂：来自SBE43溶解氧传感器的未校准电压信号<br /><br />VFl：来自WetLabs WetStar叶绿素荧光计的未校准电压信号<br /><br />异常数据：异常值已替换为非数值（NaN）。<br />注意：在BCO-DMO的处理流程中，已将非数值（NaN）替换为BCO-DMO标准标记'nd'。</p>