Index of /ftp/oceans/NDP_094

[ICO]NameLast modifiedSizeDescription
[DIR]Parent Directory  -  
[DIR]tco2_maps/08-Sep-2014 18:44 -  
[DIR]talk_maps/08-Sep-2014 18:41 -  
[DIR]ph_maps/08-Sep-2014 18:34 -  
[DIR]pco2_maps/08-Sep-2014 18:35 -  
[DIR]omg_calcite_maps/08-Sep-2014 18:37 -  
[DIR]omg_aragonite_maps/08-Sep-2014 18:39 -  
[ ]TALK_TCO2_pCO2_GLOB_Grid_Dat.nc13-Mar-2015 14:21 4.8M 
[TXT]TALK_TCO2_pCO2_GLOB_Grid_Dat.csv08-Sep-2014 19:29 2.3M 
[TXT]README13-Mar-2015 15:26 3.8K 
[TXT]Original_obs_data.csv09-Sep-2014 20:15 1.8M 
[ ]NDP_094.pdf08-Sep-2014 19:46 8.7M 

Note: The NetCDF file TALK_TCO2_pCO2_GLOB_Grid_Dat.nc for Climatological Distributions of pH, pCO2, 
Total CO2, Alkalinity, and CaCO3 Saturation in the Global Surface Ocean was created by Andy Jacobson of 
NOAA Earth System Research Laboratory Boulder, Colorado. The variables in the TALK_TCO2_pCO2_GLOB_Grid_Dat.nc 
were created from the TALK_TCO2_pCO2_GLOB_Grid_Dat.csv file, and follow their descriptions exactly.

Please cite this data set as:

Takahashi, T., S. C. Sutherland, D. W. Chipman, J. G. Goddard, T. Newberger and C. Sweeney. 2014. 
Climatological Distributions of pH, pCO2, Total CO2, Alkalinity, and CaCO3 Saturation in the Global 
Surface Ocean. ORNL/CDIAC-160, NDP-094. Carbon Dioxide Information Analysis Center, Oak Ridge National 
Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee. doi: 10.3334/CDIAC/OTG.NDP094

This is the documentation file for the data of carbonate chemistry
interpolated and calculated on our 4∞ Latitude by 5∞ Longitude
monthly grid in the reference year of 2005.  
The parameters TCO2, pH, CO3=, Hydrogen Ion, calcite, and aragonite
saturation, are calculated from pCO2 and TALK.

The variables in the TALK_TCO2_pCO2_GLOB_Grid_Dat.csv are described as follows:

MONTH		Calendar Month, 1 = Jan, 2 = Feb, etc.
LATITUDE	Latitude of the center point of the box.  
		North = +, South = -
LONGITUDE_360	Longitude of the center point of the box.
		in degrees East.  (i.e. 75∞W = -75 + 360 = 285)
SLOPE		Slope of linear relation between Salinity and
		Potential Alkalinity.
INTERCEPT	Intercept of linear relation between Salinity and
		Potential Alkalinity.
SST		Climatological Sea Surface Temperature (deg C).
SSS		Climatological Sea Surface Salinity
		(Practical Salinity Scale).
PALK		Potential Alkalinity. PALK = Total Alkalinity + Nitrate
		(microequivalents per kilogram) estimated from SAL.
 		PALK = SLOPE * Salinity + INTERCEPT
NITRAT		Climatological Nitrate (micromoles per kilogram seawater).
PHSPHT		Climatological Phosphate (micromoles per kilogram seawater).
SILCAT		Climatological Silicate (micromoles per kilogram seawater).
ALKALI		Total Alkalinity calculated from Potential Alkalinity.
		TALK = PALK - NO3.
PCO2_WAT_SST	Partial Pressure of CO2 at sea surface temperature.
		(microatmospheres), Adjusted to year 2005.
TCARBN		Total CO2 (micromoles per kilogram seawater) calculated
		from TALK and pCO2.
CO3		Carbonite ion concentration ((micromoles per kilogram seawater.) 
PH		Total hydrogen ion concentration scale.
HION		Total Hydrogen Ion Concentration (10^-9 moles per kilogram seawater). 
OMGARAG		Degree of saturation (Omega) of Aragonite.
OMGCALC		Degree of saturation (Omega) of Calcite.

The variables in the Original_obs_data.csv are described as follows:

Data name	Description
LATITUDE	Latitude (decimal degrees) North is +, South is -
LONGITUDE_360	Longitude (decimal degrees) East is +, West is -
DAY		Day of the month.
MONTH		Month of the year (Jan = 1, Feb = 2, etc.)
YEAR		Calendar year
CTD_PRE		Pressure (decibars)
CTDTMP		Temperature (Deg C)
SALNTY		Salinity (Practical Salinity Scale)
OXYGEN		OXYGEN (micromoles per kilogram seawater)
NITRAT		Nitrate (micromoles per kilogram seawater)
NITRIT		Nitrite (micromoles per kilogram seawater)
SILCAT		Silicate (micromoles per kilogram seawater)
PHSPHT		Phosphate (micromoles per kilogram seawater)
CFC-11		Freon 11 (picomoles per kilogram seawater)
CFC-12		Freon 12 (picomoles per kilogram seawater)
TCARBN		Total CO2 (micromoles per kilogram seawater)
ALKALI 		Observed Total Alkalinity (microequivalents per kilogram seawater)
PCO2_WAT	Observed Partial Pressure of CO2 (microatmospheres) at 
		TEMP_PCO2 temperature
PCO2_TMP	Temperature at which pCO2 was measured.
PCO2_WAT_SST	Partial Pressure of CO2 (microatmospheres) at 
		seawater temperature

Blank values are indicated by -999.90