# Common Era Evolution of Ocean Temperature
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#                World Data Service for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#             National Centers for Environmental Information (NCEI)
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# Template Version 3.0
# Encoding: UTF-8
# NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. 
# If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. 
#
# Online_Resource: https://www.ncdc.noaa.gov/paleo/study/26611 
#       Description: NOAA Landing Page
# Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/gcmoutput/gebbie2019/readme-gebbie2019.txt
#       Description: NOAA location of the template
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# Original_Source_URL:  
#       Description:
# 
# Description/Documentation lines begin with #
# Data lines have no #
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# Archive: Paleoclimate Modeling
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# Dataset DOI: 
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# Parameter_Keywords: ocean model
#--------------------
# Contribution_Date
#	Date: 2019-04-09 
#--------------------
# File_Last_Modified_Date
#	Date: 2019-11-25
#--------------------
# Title
#	Study_Name: Common Era Evolution of Ocean Temperature
#--------------------
# Investigators
#	Investigators: Gebbie, G.; Huybers, P.
#--------------------
# Description_Notes_and_Keywords
#	Description: This data package includes an inversion of ocean data to reconstruct the evolution of Common Era (15-2015 CE) ocean temperature (labeled OPT-0015). 
#	It also includes the output of a model simulation initialized from equilibrium in the year 15 (EQ-0015) and 1750 (EQ-1750). Output includes both the potential
#	temperature and potential temperature anomaly fields. Note that an error occurred with the Pacific Tropical surface mask, where parts of the Caribbean are
#	included as part of the Pacific. In additional simulations at 4 degree horizontal resolution (not included here), the resulting error is insignificant for the deep
#	ocean as Gulf of Mexico waters do not subduct to the deep ocean. In addition, atmospheric processes may impart some dependence between the Caribbean
#	and Pacific so that these regions may be linked.
#	
#	These data, including output from two simulations and output from an inversion, provide supplementary information to the Science manuscript. 
#	
#	Also see NCEI Accession Number 0178641 for the observations that were used to constrain this model output. 
#	
#	NOTE: Files Theta_OPT-0015.nc and Theta_anom_OPT-0015.nc were replaced 2019-11-25 to correct erroneous values.
#	
#	netCDF format files are as follows:
#	Theta_OPT-0015.nc  1710729748 Bytes, MD5 sum: 0f790c4625891a0e2d55627df2dfc12d
#	Theta_EQ-1750.nc size: 256612272 Bytes, hash sum: 85f9621b4bde815968dbf46d522bbf5cc096107fa910bd7b4b8e3a787fedcfe3fc02c3b8b3ea2f183888c41bf7936c0e
#	Theta_EQ-0015.nc size: 1710729712 Bytes, hash sum: 36b08fa9b23ff744d402be19f0638f51dee5c586eba6f37925cbab02d65d428ec3bf8f7d146f20ede4c0f8e8499505ea
#	Theta_anom_OPT-0015.nc  size: 1710729756 Bytes, MD5 sum: f1ca8583ea679c1d3b70848aeca2ca50
#	Theta_anom_EQ-1750.nc  size: 256612280 Bytes, hash sum: 2319239597150d63a3893deffe8fd5015ef824ae1569ae29c4fc5d4a16e426af4641c24aa08287d9287eacf55071ea64
#	Theta_anom_EQ-0015.nc  size: 1710729720 Bytes, hash sum: 4e13fcab97a7275c7c01aedb564c0d9e0be5b9c8c265800bb4ae9f5e6612025c52a94e32eff45f8217bb28ad85abfe69 
#
#	Variables: Potential temperature (theta) (Calculated) and Potential temperature anomaly (theta) (Calculated)
#	Units: degrees Celsius   Observation Category: model output  Sampling and Analyzing Method: Ocean numerical simulation and inversion of observations
#	
#	netcdf Theta_EQ-0015 {
#	dimensions:
#		year = 400 ;
#		depth = 33 ;
#		latitude = 90 ;
#		longitude = 180 ;
#	variables:
#		double longitude(longitude) ;
#			longitude:long_name = "Longitude" ;
#			longitude:units = "degrees east" ;
#		double latitude(latitude) ;
#			latitude:long_name = "Latitude" ;
#			latitude:units = "degrees north" ;
#		double depth(depth) ;
#			depth:long_name = "Depth" ;
#			depth:units = "meters" ;
#		double year(year) ;
#			year:long_name = "Year CE" ;
#			year:units = "Common Era calendar year" ;
#		double theta(longitude, latitude, depth, year) ;
#			theta:long_name = "potential temperature" ;
#			theta:units = "deg Celsius" ;
#		double notes(year) ;
#			notes:author = "Geoffrey (Jake) Gebbie (ggebbie@whoi.edu)" ;
#			notes:version = "Gebbie & Huybers, EQ-0015" ;
#			notes:output\ created = "1 July 2018" ;
#			notes:file\ created = "6 Dec 2018" ;
#	}
#	
#--------------------
# Publication 
#	Authors: G. Gebbie, P. Huybers
#	Published_Date_or_Year: 2019-01-04     
#	Published_Title: The Little Ice Age and 20th-century deep Pacific cooling
#	Journal_Name: Science
#	Volume: 363
#	Edition: 
#	Issue: 6422
#	Pages: 70-74
#	Report_Number: 
#	DOI: 10.1126/science.aar8413 
#	Online_Resource: https://science.sciencemag.org/content/363/6422/70
#	Full_Citation: 
#	Abstract: Proxy records show that before the onset of modern anthropogenic warming, globally coherent cooling occurred from the Medieval Warm Period to the Little Ice Age. The long memory of the ocean suggests that these historical surface anomalies are associated with ongoing deep-ocean temperature adjustments. Combining an ocean model with modern and paleoceanographic data leads to a prediction that the deep Pacific is still adjusting to the cooling going into the Little Ice Age, whereas temperature trends in the surface ocean and deep Atlantic reflect modern warming. This prediction is corroborated by temperature changes identified between the HMS Challenger expedition of the 1870s and modern hydrography. The implied heat loss in the deep ocean since 1750 CE offsets one-fourth of the global heat gain in the upper ocean.
#------------------
# Funding_Agency 
#	Funding_Agency_Name: James E. and Barbara V. Moltz Fellowship
#	Grant: 
#------------------
# Funding_Agency 
#	Funding_Agency_Name: US National Science Foundation
#	Grant: OCE-1357121, OCE-1558939
#------------------
# Site_Information 
#	Site_Name: Global Ocean
#	Location: Geographic Region>Global Ocean
#	Country:  
#	Northernmost_Latitude: 90
# 	Southernmost_Latitude: -80
# 	Easternmost_Longitude: 180
# 	Westernmost_Longitude: -180
# 	Elevation:  
#------------------
# Data_Collection   
#	Collection_Name: Gebbie2019OceanTemp 
#	Earliest_Year: 15
#	Most_Recent_Year: 2015
#	Time_Unit: Year CE
#	Core_Length: 
#	Notes: 
#------------------
# Chronology_Information
#	Chronology: 
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#----------------	
# Variables 
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# Data variables follow are preceded by "##" in columns one and two.
# Data line variables format:  one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) 
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## temp	Potential temperature, seawater, , degrees C, ,Paleoclimate Modeling,,,N,
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#----------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Values:  
#