DOI: 10.5281/zenodo.8211111
title: Zero-degree isotherm latitude (ZIL) position over Antarctica: Historical and Projections

description: This is the dataset associated to the research 'Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: extent and implications' published in Science of the Total Environment.


This repository contains:



	
ZIL_1957-2020_position.zip: Historical position of the ZIL for every longitude point in ERA5 from 1957 to 2020 for different seasons. Files named:

	

		
ZIL_1957-2020_[season].csv

		

			
Dimensions: [years, lons]
			
Units: degrees latitude
		
		
	
	
	
ZIL_1957-2020_timeseries.zip: Historical spatially averaged position of the ZIL for Antartica (Ant) and the Antarctic Peninsula (AP) in ERA5 from 1957 to 2020 for different seasons. Files named:
	

		
ZIL_1957-2020_[season]_[Ant/AP]_timeseries.csv
		

			
Dimensions: [years]
			
Units: degrees latitude
		
		
	
	
	
ZIL_1957-2020_meanposition.zip: Historical temporally averaged position of the ZIL in ERA5 from 1957 to 2020 for different seasons and months. Files named:
	

		
ZIL_1957-2020_[season/month]_mean.csv
		

			
Dimensions: [lons]
			
Units: degrees latitude
		
		
	
	
	
ZIL_CEMIP6_Historical.zip: Mean position and trends of the ZIL for every longitude point in Historical simulations of CEMIP6 from 1957 to 2014 for different seasons. Files named:
	

		
ZIL_CEMIP6_Hist_[season]_mean.csv
		

			
Dimensions: [models, lons]
			
Units: degrees latitude
		
		
		
ZIL_CEMIP6_Hist_[season]_trend.csv
		

			
Dimensions: [models, lons]
			
Units: degrees latitude per year
		
		
	
	
	
ZIL_CEMIP6_SSP2-45.zip: Mean position of the ZIL for every longitude point under the SSP2-4.5 scenario in CEMIP6 for the period 2040-69 and 2070-90 and trends for the period 2015-99 for different seasons. Files named:
	

		
ZIL_CEMIP6_SSP2-45_2040-69_[season]_mean.csv
		

			
Dimensions: [models, lons]
			
Units: degrees latitude
		
		
		
ZIL_CEMIP6_SSP2-45_2070-99_[season]_mean.csv
		

			
Dimensions: [models, lons]
			
Units: degrees latitude
		
		
		
ZIL_CEMIP6_SSP2-45_[season]_trend.csv
		

			
Dimensions: [models, lons]
			
Units: degrees latitude per year
		
		
	
	
	
ZIL_CEMIP6_SSP5-85.zip: Mean position of the ZIL for every longitude point under the SSP5-8.5 scenario in CEMIP6 for the period 2040-69 and 2070-90 and trends for the period 2015-99 for different seasons. Files named:
	

		
ZIL_CEMIP6_SSP5-85_2040-69_[season]_mean.csv
		

			
Dimensions: [models, lons]
			
Units: degrees latitude
		
		
		
ZIL_CEMIP6_SSP5-85_2070-99_[season]_mean.csv
		

			
Dimensions: [models, lons]
			
Units: degrees latitude
		
		
		
ZIL_CEMIP6_SSP5-85_[season]_trend.csv
		

			
Dimensions: [models, lons]
			
Units: degrees latitude per year
		
		
	
	



seasons are:



	
ANN: Annual mean
	
DJF: December-January-February (Summer)
	
MAM: March-April-May (Autumn)
	
JJA: June-July-August (Winter)
	
SON: September-October-November (Spring)



 


How to cite


If you use this dataset, please cite the accompanying paper as:


 


Complementary code


You can find the jupyter notebooks to complement the research in: https://doi.org/10.1002/joc.8020


 


Contact


If you have any question, please contact with Sergi at sergi.gonzalez@slf.ch