N2O Data Covering Abrupt Climatic Changes: Readme file
--------------------------------------------------------------------------------
			World Data Center A - Paleoclimatology
--------------------------------------------------------------------------------
NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!!


NAME OF DATA SET: N2O Data Covering Abrupt Climatic Changes
CONTRIBUTORS: Jacqueline Flückiger, André Dällenbach, Bernhard Stauffer, 
Climate and Environmental Physics, University of Bern, Switzerland

IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 1999-057
SUGGESTED DATA CITATION: Flückiger, J., A. Dällenbach, B. Stauffer, 1999, 
N2O Data Covering Abrupt Climatic Changes.
IGBP Pages/World Data Center-A for Paleoclimatology
Data Contribution Series #1999-057
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

ORIGINAL REFERENCE:
Flückiger, J., A. Dällenbach, T. Blunier, B. Stauffer, T. F. Stocker, 
D. Raynaud and J.-M. Barnola, 1999, Variations in atmospheric N2O 
concentration during abrupt climatic changes, Science 285, 227-230.

LAST UPDATE: 11/1999 (Original receipt by WDC-A Paleo)
GEOGRAPHIC REGION: Global
PERIOD OF GRIP TRANSITION RECORD: 10.9 - 16.4 kyr BP
PERIOD OF GRIP DANSGAARD-OESCHGER EVENT 8 RECORD: 32.9 - 36.8 kyr BP
PERIOD OF BYRD RECORD: 33.4 - 36.3 kyr BP

LIST OF FILES: readme.n2o_fl99.txt (this file), grip_n2o_tr_fl99.txt, 
grip_n2o_do8_fl99.txt, byrd_n2o_do8_fl99.txt

DESCRIPTION:
grip_n2o_tr_fl99.txt: N2O record from the GRIP ice core (Greenland) 
covering the last glacial-interglacial transition
grip_n2o_do8_fl99.txt: N2O record from the GRIP ice core (Greenland) 
covering Dansgaard-Oeschger event 8
byrd_n2o_do8_fl99.txt: N2O record from the Byrd ice core (Antarctica) 
covering Dansgaard-Oeschger event 8

File name: grip_n2o_tr_fl99.txt
The file contains five columns:
Column 1: depth [m]
Column 2: age [yr BP]
Column 3: N2O concentration [ppbv]
Column 4: N2O artefacts [ppbv] (for further information see original reference)
Column 5: one standard deviation [ppbv]

File name: grip_n2o_do8_fl99.txt
The file contains five columns:
Column 1: depth [m]
Column 2: age [yr BP]
Column 3: N2O concentration [ppbv]
Column 4: N2O artefacts [ppbv] (for further information see original reference)
Column 5: one standard deviation [ppbv]

File name: byrd_n2o_do8_fl99.txt
The file contains four columns:
Column 1: depth [m]
Column 2: age [yr BP]
Column 3: N2O concentration [ppbv]
Column 5: one standard deviation [ppbv]
Eurocore				GRIP			
depth	age	N20	uncertainty	depth	age	N2O	uncertainty
		mean	(1 sigma)			mean	(1 sigma)
[m]	[yr AD]	[ppbv]	[ppbv]	[m]	[yr AD]	[ppbv]	[ppbv]
73.8	1962	297.1	5.7	111.63	1809	274	4.1
83.09	1933	292.7	3	127.58	1737	269	3.4
92.62	1892	274.7	2.1	133.08	1712	270.7	3.5
103.06	1848	276.5	3.1	149.58	1637	273.7	3.5
110.58	1815	272.3	7.5	154.59	1614	265.7	3.5
112.33	1807	271	7.6	171.58	1538	270.3	3.5
117.25	1783	272.8	4	177.06	1513	268.7	3.8
122.26	1758	277.7	2.5	195.78	1425	271.7	3.5
126.89	1740	271.6	4.2	199.08	1411	273.7	3.5
133	1716	270.7	4.7	215.54	1331	266.3	3.8
142.61	1677	272.4	5.3	221.08	1303	267.3	3.8
152.37	1634	272.3	4	237.54	1225	267	8
163.7	1580	269.9	4.8	242.59	1200	269	3.4
167.22	1563	263.7	3.5	259.65	1115	264.7	6.6
172.37	1537	273.8	2.2	275.74	1037	270	3.7
182.85	1490	269.7	2.5	281.07	1012	270	3.4
186.47	1474	266.3	2.2	292.07	958	268.7	3.5
194.17	1438	268.4	4.2				
156	1615	262.8	2.7				
253.2	1159	261.7	3.6