GISP2 Concentration of H2O2 in surface snow.

REFERENCES:

Dibb, J.E., and J.L. Jaffrezo. 1997. Air-snow exchange investigations at
Summit, Greenland: An overview. Journal of Geophysical Research 102:26795
26807.

McConnell, J.R., R.C. Bales, J.R. Winterle, H.D. Kuhns, and C.R. Stearns.
1997. A lumped parameter model for the atmosphere-to-snow transfer function
for hydrogen peroxide. Journal of Geophysical Research 102:26809-26818.

Bales, R.C., J.R. McConnell, M.V. Losleben, M.H. Conklin, K. Fuhrer, A.
Neftel, J.E. Dibb, J.D.W. Kahl, and C.R. Stearns. 1995. Diel variations of
H2O2 in Greenland: A discussion of the cause and effect relationship.
Journal of Geophysical Research 100:18661-18668.

Bales, R.C., M.V. Losleben, and J.R. McConnell. 1995. H2O2 in snow, air and
open pore sapce in firn at Summit, Greenland. Geophysical Research Letters
22:1261-1264.

DATA DESCRIPTION:

This file has concentration data for H2O2 in surface snow for the 1993
summer season.  Samples were collected from the top few millimeters of
snow from a 10 x 10 cm area.  Samples were generally melted and analyzed
within 1 to 3 hours after collection.  Analysis was by the peroxidase
method of Sigg et al. (1992). See Bales et al. (1995) for more details. 

DATA:

day of year	H2O2 concentration (um/l)

147.3958	18.3529
148.4063	22.5735
150.4063	15.3353
151.4063	16.3588
152.3958	15.3353
153.3958	15.1176
154.2813	14.4706
154.5208	13.4412
154.7813	14.0882
155.0208	14.6412
155.2813	15.4059
155.5313	17.1765
155.7813	16.8588
156.0139	15.9059
156.3542	16.4059
157.3646	15.8941
158.4375	16.0706
159.4063	15.9647
160.4167	18.4265
161.3542	16.7990
162.3750	17.5941
163.3854	17.4353
164.3646	16.6000
165.3542	19.1059
166.3542	15.9588
167.3542	20.5471
168.3750	17.8412
169.4028	16.2882
170.3958	11.2412
171.2917	20.6324
171.5278	21.6471
171.7847	21.0000
172.0313	23.2500
172.3021	23.5147
172.5278	22.5441
172.7778	24.5000
173.2813	32.0000
173.5208	27.6324
173.8125	25.8824
174.0208	24.6618
174.3333	25.1765
175.3125	23.7059
176.3542	22.7941
177.3542	18.4706
179.3646	12.1912
181.3542	10.1765
182.3542	9.3824
183.3542	11.5515
184.3750	16.8824
185.3542	17.4902
186.5313	21.6471
186.7778	15.1176
186.9896	18.1765
187.2813	18.9412
187.5208	17.1765
187.7813	17.9412
188.0208	15.3824
188.2813	15.3824
188.5208	15.8824
188.7708	15.3824
189.0208	14.8529
189.2917	14.8529
189.5208	14.8529
189.7708	14.8529
190.3333	23.3235
191.3646	20.7353
192.3646	22.7941
193.3646	18.4412
194.3646	16.3824
195.3646	17.4118
199.3229	15.5882
199.5139	15.5882
199.6944	15.8824
199.8785	16.0294
200.2951	17.2353
200.4826	16.7059
200.6910	16.2059
200.8924	16.2647
201.2993	15.5882
201.4826	15.7059
201.6736	14.1176