# Monteverde Cloud Forest, Costa Rica, Tree Cellulose d18O Data
#----------------------------------------------------------------------- 
#                World Data Center for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#----------------------------------------------------------------------- 
# 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: http://www.hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:16139 
#
# Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/treering/isotope/northamerica/costarica/anchukaitis2010/monteverde2010mv12monthly.txt
# 
# Description/Documentation lines begin with #
# Data lines have no #
#
# Archive: Tree Ring
#--------------------
# Contribution_Date
#	Date: 2014-03-06
#--------------------
# Title
#	Study_Name: Monteverde Cloud Forest, Costa Rica, Tree Cellulose d18O Data 
#--------------------
# Investigators
#       Investigators: Anchukaitis, K.J.; Evans, M.N.
#--------------------
# Description_and_Notes
#	Description: Stable oxygen isotopes (d18O) measured at constant depth in two montane cloud forest trees (Pouteria, 
#       specimens MV12 and MV15), plus the d18O data on monthly age scale for the 2 trees and for a composite of both samples. 
#--------------------
# Publication 
#       Authors: Kevin J. Anchukaitis and Michael N. Evans 
#       Published_Date_or_Year: 2010-03-16
#       Published_Title: Tropical cloud forest climate variability and the demise of the Monteverde golden toad
#       Journal_Name: Proceedings of the National Academy of Sciences of the United States of America
#       Volume: 107
#       Edition: 
#       Issue: 11
#       Pages:  5036-5040
#       DOI: 10.1073/pnas.0908572107
#       Online_Resource: http://www.pnas.org/content/107/11/5036.abstract
#       Full_Citation: 
#       Abstract: Widespread amphibian extinctions in the mountains of the American tropics have been blamed on the interaction of anthropogenic climate change and a lethal pathogen. However, limited meteorological records make it difficult to conclude whether current climate conditions at these sites are actually exceptional in the context of natural variability. We use stable oxygen isotope measurements from trees without annual rings to reconstruct a century of hydroclimatology in the Monteverde Cloud Forest of Costa Rica. High-resolution measurements reveal coherent isotope cycles that provide annual chronological control and paleoclimate information. Climate variability is dominated by interannual variance in dry season moisture associated with El Niño Southern Oscillation events. There is no evidence of a trend associated with global warming. Rather, the extinction of the Monteverde golden toad (Bufo periglenes) appears to have coincided with an exceptionally dry interval caused by the 1986-1987 El Niño event.
#------------------
# Funding_Agency 
#       Funding_Agency_Name: US National Science Foundation
#       Grant: IGERT Program DGE-0221594, ATM-0349356, ATM-0321348 
#------------------
# Funding_Agency 
#       Funding_Agency_Name: U.S. Department of Energy
#       Grant: Graduate Research Environmental Fellowship
#------------------
# Site_Information 
#	Site_Name: Monteverde Cloud Forest
#	Location: North America>Central America>Costa Rica
#	Country: Costa Rica
#	Northernmost_Latitude: 10.2 
# 	Southernmost_Latitude: 10.2 
# 	Easternmost_Longitude: -85.35 
# 	Westernmost_Longitude: -85.35 
# 	Elevation: 1800 m  
#------------------
# Data_Collection   
#	Collection_Name: Monteverde2010mv12monthly
#	Earliest_Year: 1948 
#	Most_Recent_Year: 2002 
#	Time_Unit: Year AD
#	Core_Length: 302.4 mm

#	Notes: MV12 d18O, monthly age scale
#
#------------------
# Chronology: 
# see Anchukaitis and Evans 2010, Table S1 for details
# sample	lab_number	depth(mm)	Fraction modern carbon(F14C)	Precision	calibrated_date AD
# MV12	AA74375	167	1.5111	0.0078	1969-1972
# MV12	AA74376	230	1.0842	0.0088	1955-1957
# MV12	AA74377	242	0.992	0.004	1951-1956
# MV15	AA76775	19.5	1.126	0.0048	1957-1961
# MV15	AA74381	57	0.9859	0.0069	1938-1939
# MV15	AA74379	69	0.9882	0.006	1931-1932
# MV15 	AA74378	121	0.9833	0.004	1908-1909
# 
#----------------	
# Variables 
#
# Data variables follow (have no #)
# Data line variables format:  Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) 

age_AD	Age, , , Year AD, , , , ,N
d18Ocellulose	delta18O, alpha cellulose, , per mil VSMOW, , , , ,N 

#----------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Values:  NaN

age_AD	d18Ocellulose
1948.29	29.1476
1948.38	28.6481
1948.46	28.2716
1948.54	27.3876
1948.63	27.3731
1948.71	27.1161
1948.79	27.3271
1948.88	27.2246
1948.96	27.7789
1949.04	28.0693
1949.13	28.3483
1949.21	28.8268
1949.29	29.0503
1949.38	28.8704
1949.46	27.7982
1949.54	27.6844
1949.63	27.5376
1949.71	27.0326
1949.79	26.9515
1949.88	26.8901
1949.96	27.1168
1950.04	26.9108
1950.13	27.0706
1950.21	27.1052
1950.29	28.0531
1950.38	27.853
1950.46	27.4339
1950.54	27.5511
1950.63	27.4888
1950.71	27.0382
1950.79	27.1255
1950.88	27.5409
1950.96	28.0956
1951.04	27.9428
1951.13	27.9065
1951.21	28.6845
1951.29	28.9283
1951.38	28.0012
1951.46	28.1132
1951.54	28.114
1951.63	27.4115
1951.71	27.8559
1951.79	27.4946
1951.88	27.5014
1951.96	27.2472
1952.04	27.484
1952.13	27.7324
1952.21	28.4823
1952.29	28.9733
1952.38	28.2508
1952.46	27.7565
1952.54	27.2965
1952.63	27.2341
1952.71	27.2318
1952.79	27.027
1952.88	26.5788
1952.96	26.5607
1953.04	27.6538
1953.13	28.9481
1953.21	29.6345
1953.29	29.6513
1953.38	29.2022
1953.46	27.7995
1953.54	27.0416
1953.63	26.7056
1953.71	26.8147
1953.79	26.5963
1953.88	26.8776
1953.96	27.0968
1954.04	27.3475
1954.13	27.8173
1954.21	28.471
1954.29	29.1558
1954.38	28.7981
1954.46	28.7866
1954.54	28.6222
1954.63	27.8058
1954.71	26.5833
1954.79	26.1263
1954.88	26.0979
1954.96	26.1613
1955.04	26.0462
1955.13	26.2273
1955.21	26.6861
1955.29	27.4038
1955.38	27.2797
1955.46	27.1085
1955.54	26.8073
1955.63	26.2928
1955.71	26.154
1955.79	26.2808
1955.88	26.5054
1955.96	26.6601
1956.04	27.5387
1956.13	28.3776
1956.21	29.047
1956.29	29.4171
1956.38	29.149
1956.46	28.6713
1956.54	27.9395
1956.63	26.9086
1956.71	26.4331
1956.79	26.5479
1956.88	26.8067
1956.96	26.7636
1957.04	26.6455
1957.13	27.1008
1957.21	27.7725
1957.29	28.3031
1957.38	27.9062
1957.46	28.0126
1957.54	27.779
1957.63	27.4096
1957.71	27.3456
1957.79	27.1329
1957.88	27.0541
1957.96	27.6186
1958.04	28.2741
1958.13	28.66
1958.21	29.769
1958.29	29.9001
1958.38	29.5735
1958.46	29.6289
1958.54	29.5901
1958.63	28.9811
1958.71	28.2735
1958.79	27.7989
1958.88	27.5097
1958.96	27.3586
1959.04	28.178
1959.13	28.6098
1959.21	28.7831
1959.29	28.8266
1959.38	28.0575
1959.46	27.7588
1959.54	27.7551
1959.63	27.9171
1959.71	28.1311
1959.79	28.3221
1959.88	28.6418
1959.96	28.9843
1960.04	29.2244
1960.13	29.89
1960.21	30.3329
1960.29	30.8921
1960.38	30.7936
1960.46	30.6196
1960.54	29.9545
1960.63	29.0298
1960.71	28.0471
1960.79	26.9421
1960.88	26.6286
1960.96	26.8391
1961.04	27.0577
1961.13	27.5741
1961.21	28.0427
1961.29	28.2221
1961.38	27.6004
1961.46	27.1641
1961.54	26.9684
1961.63	26.9704
1961.71	27.187
1961.79	27.8516
1961.88	27.7304
1961.96	28.2318
1962.04	28.8901
1962.13	29.3759
1962.21	29.6645
1962.29	30.2041
1962.38	29.8484
1962.46	29.4326
1962.54	28.9566
1962.63	28.6116
1962.71	28.0506
1962.79	27.2736
1962.88	26.4539
1962.96	26.0609
1963.04	26.0946
1963.13	26.7856
1963.21	27.1838
1963.29	27.2891
1963.38	27.1974
1963.46	27.1058
1963.54	27.0141
1963.63	26.9224
1963.71	26.892
1963.79	27.1066
1963.88	27.3212
1963.96	27.3993
1964.04	27.4432
1964.13	27.4966
1964.21	27.5641
1964.29	27.6316
1964.38	27.1598
1964.46	27.0606
1964.54	27.3339
1964.63	27.4046
1964.71	27.6237
1964.79	27.9914
1964.88	28.7731
1964.96	29.4091
1965.04	29.8994
1965.13	29.9034
1965.21	29.9094
1965.29	29.9174
1965.38	28.7357
1965.46	27.4354
1965.54	27.0292
1965.63	26.7984
1965.71	27.1964
1965.79	27.2474
1965.88	27.2737
1965.96	27.2484
1966.04	27.3261
1966.13	28.2619
1966.21	29.4529
1966.29	29.7434
1966.38	29.6604
1966.46	29.1309
1966.54	28.0064
1966.63	27.7609
1966.71	26.9449
1966.79	26.3764
1966.88	26.8234
1966.96	27.0349
1967.04	27.5854
1967.13	28.1094
1967.21	28.1534
1967.29	28.4419
1967.38	28.3766
1967.46	28.3206
1967.54	28.2883
1967.63	27.8491
1967.71	27.1048
1967.79	26.9042
1967.88	26.8298
1967.96	26.9687
1968.04	27.1391
1968.13	27.3517
1968.21	27.4669
1968.29	27.543
1968.38	27.226
1968.46	27.1769
1968.54	27.7979
1968.63	28.0191
1968.71	27.9405
1968.79	27.8619
1968.88	27.9159
1968.96	28.7658
1969.04	29.4016
1969.13	29.7519
1969.21	30.3195
1969.29	30.974
1969.38	30.8156
1969.46	30.3159
1969.54	30.0789
1969.63	28.6315
1969.71	27.6141
1969.79	26.782
1969.88	26.4348
1969.96	26.428
1970.04	26.1154
1970.13	26.6578
1970.21	27.5958
1970.29	28.6345
1970.38	28.2677
1970.46	27.5113
1970.54	25.2425
1970.63	24.8637
1970.71	24.6795
1970.79	24.8295
1970.88	25.6332
1970.96	26.9987
1971.04	28.1662
1971.13	29.0539
1971.21	29.9368
1971.29	30.1372
1971.38	29.6553
1971.46	29.1734
1971.54	28.8964
1971.63	28.084
1971.71	26.924
1971.79	26.2929
1971.88	25.7029
1971.96	25.5589
1972.04	26.2202
1972.13	27.0318
1972.21	27.9848
1972.29	28.4657
1972.38	28.1581
1972.46	27.8506
1972.54	27.543
1972.63	27.2966
1972.71	27.0961
1972.79	26.8956
1972.88	26.6789
1972.96	26.3654
1973.04	26.2263
1973.13	26.3199
1973.21	26.3838
1973.29	26.4357
1973.38	26.0278
1973.46	25.9958
1973.54	26.0015
1973.63	26.0071
1973.71	25.9853
1973.79	26.3725
1973.88	27.0921
1973.96	27.9104
1974.04	28.8704
1974.13	29.4945
1974.21	29.5369
1974.29	29.793
1974.38	29.3454
1974.46	29.0008
1974.54	28.4059
1974.63	27.7146
1974.71	27.2001
1974.79	26.8679
1974.88	26.2744
1974.96	26.3826
1975.04	26.8796
1975.13	27.5493
1975.21	28.2185
1975.29	28.7017
1975.38	28.6088
1975.46	28.5474
1975.54	28.5447
1975.63	27.71
1975.71	26.4945
1975.79	26.1561
1975.88	26.0715
1975.96	26.5102
1976.04	27.5697
1976.13	28.9969
1976.21	30.1125
1976.29	30.2088
1976.38	29.5502
1976.46	29.0093
1976.54	27.3922
1976.63	26.036
1976.71	25.3972
1976.79	25.1099
1976.88	24.954
1976.96	25.2485
1977.04	25.6715
1977.13	25.9986
1977.21	26.784
1977.29	27.3733
1977.38	27.3935
1977.46	27.4136
1977.54	27.6753
1977.63	28.098
1977.71	28.5068
1977.79	28.8603
1977.88	29.2137
1977.96	29.5601
1978.04	29.9047
1978.13	30.1115
1978.21	30.1116
1978.29	30.1118
1978.38	29.0985
1978.46	28.7574
1978.54	28.1702
1978.63	27.5401
1978.71	27.0875
1978.79	26.6722
1978.88	26.726
1978.96	26.6274
1979.04	27.2181
1979.13	27.8857
1979.21	28.2618
1979.29	28.5981
1979.38	27.296
1979.46	26.58
1979.54	25.9539
1979.63	25.4976
1979.71	25.6782
1979.79	26.1412
1979.88	25.9994
1979.96	26.406
1980.04	26.7099
1980.13	28.7422
1980.21	29.9364
1980.29	30.4077
1980.38	29.7846
1980.46	28.9581
1980.54	28.2707
1980.63	27.4615
1980.71	26.9799
1980.79	26.1953
1980.88	25.5086
1980.96	25.5624
1981.04	26.6687
1981.13	26.7745
1981.21	25.8734
1981.29	25.9697
1981.38	26.1244
1981.46	26.279
1981.54	26.4652
1981.63	26.6724
1981.71	26.9177
1981.79	27.316
1981.88	27.7142
1981.96	27.6365
1982.04	27.4399
1982.13	27.4258
1982.21	27.6854
1982.29	27.9451
1982.38	27.4595
1982.46	26.4794
1982.54	25.6375
1982.63	25.2923
1982.71	25.0119
1982.79	25.4501
1982.88	25.9561
1982.96	27.1669
1983.04	28.1977
1983.13	29.1149
1983.21	30.2749
1983.29	30.328
1983.38	30.5748
1983.46	29.6274
1983.54	29.1635
1983.63	27.3619
1983.71	26.3588
1983.79	25.98
1983.88	26.1996
1983.96	26.4925
1984.04	26.9054
1984.13	28.4935
1984.21	29.4807
1984.29	29.6275
1984.38	29.451
1984.46	28.9146
1984.54	28.899
1984.63	28.3507
1984.71	27.5169
1984.79	26.7295
1984.88	26.3948
1984.96	26.358
1985.04	26.4793
1985.13	27.1108
1985.21	26.9913
1985.29	27.6035
1985.38	27.1375
1985.46	26.6715
1985.54	25.6895
1985.63	25.619
1985.71	25.4255
1985.79	25.652
1985.88	25.6695
1985.96	26.242
1986.04	27.2185
1986.13	28.4125
1986.21	29.5255
1986.29	30.0985
1986.38	29.6752
1986.46	29.3021
1986.54	28.0634
1986.63	27.8099
1986.71	27.5056
1986.79	27.1884
1986.88	27.7071
1986.96	27.9304
1987.04	29.2534
1987.13	29.9766
1987.21	30.4042
1987.29	31.1904
1987.38	30.7255
1987.46	30.3229
1987.54	29.9008
1987.63	28.9179
1987.71	27.6837
1987.79	27.0712
1987.88	27.1336
1987.96	26.9734
1988.04	26.718
1988.13	26.7051
1988.21	27.7963
1988.29	28.5914
1988.38	28.4859
1988.46	27.8584
1988.54	26.9674
1988.63	26.7274
1988.71	26.3549
1988.79	26.7304
1988.88	27.5544
1988.96	27.156
1989.04	27.808
1989.13	28.16
1989.21	29.269
1989.29	29.7075
1989.38	29.2363
1989.46	28.5524
1989.54	27.548
1989.63	26.8785
1989.71	26.0804
1989.79	25.6677
1989.88	25.6935
1989.96	25.8538
1990.04	27.0816
1990.13	28.285
1990.21	29.0552
1990.29	29.6455
1990.38	29.6267
1990.46	28.7429
1990.54	28.0861
1990.63	27.4097
1990.71	26.9508
1990.79	26.6427
1990.88	26.7528
1990.96	27.135
1991.04	27.4622
1991.13	28.6178
1991.21	29.418
1991.29	29.4845
1991.38	28.638
1991.46	28.316
1991.54	27.3096
1991.63	26.7642
1991.71	26.8476
1991.79	27.0622
1991.88	27.1634
1991.96	27.2205
1992.04	27.3165
1992.13	27.581
1992.21	28.132
1992.29	29.051
1992.38	27.7882
1992.46	27.0951
1992.54	26.7422
1992.63	26.7686
1992.71	27.2605
1992.79	27.2494
1992.88	27.2646
1992.96	27.9137
1993.04	28.8484
1993.13	29.8181
1993.21	30.233
1993.29	30.6984
1993.38	30.1452
1993.46	29.5274
1993.54	28.6185
1993.63	27.8591
1993.71	27.1633
1993.79	26.7816
1993.88	26.6964
1993.96	26.6777
1994.04	26.8231
1994.13	27.3777
1994.21	28.4305
1994.29	28.6079
1994.38	27.5468
1994.46	27.3901
1994.54	26.0178
1994.63	26.3044
1994.71	26.5891
1994.79	26.7234
1994.88	27.0315
1994.96	27.6817
1995.04	28.6988
1995.13	29.9101
1995.21	30.5985
1995.29	30.7169
1995.38	30.5903
1995.46	30.3633
1995.54	29.8798
1995.63	28.3134
1995.71	27.9075
1995.79	27.5016
1995.88	27.0748
1995.96	26.8225
1996.04	26.6048
1996.13	26.7929
1996.21	27.4473
1996.29	27.9173
1996.38	27.3224
1996.46	26.5025
1996.54	25.6885
1996.63	25.389
1996.71	25.5421
1996.79	25.8451
1996.88	26.148
1996.96	26.7003
1997.04	27.5008
1997.13	27.8852
1997.21	28.5963
1997.29	28.7223
1997.38	28.5246
1997.46	28.2861
1997.54	26.5167
1997.63	25.6516
1997.71	25.3354
1997.79	25.8108
1997.88	26.2712
1997.96	26.5236
1998.04	27.7162
1998.13	29.1329
1998.21	30.8725
1998.29	31.1243
1998.38	31.1709
1998.46	30.0178
1998.54	28.7376
1998.63	27.4132
1998.71	26.0734
1998.79	26.9282
1998.88	27.622
1998.96	27.2278
1999.04	26.7897
1999.13	27.6553
1999.21	28.8941
1999.29	29.1186
1999.38	28.0163
1999.46	27.3094
1999.54	26.736
1999.63	26.6583
1999.71	27.0416
1999.79	26.7216
1999.88	26.7431
1999.96	26.3634
2000.04	26.4762
2000.13	27.1664
2000.21	28.092
2000.29	28.6726
2000.38	28.2779
2000.46	27.7659
2000.54	27.035
2000.63	27.6266
2000.71	26.6019
2000.79	26.1124
2000.88	26.2151
2000.96	26.0459
2001.04	26.2815
2001.13	27.0779
2001.21	28.5958
2001.29	29.7279
2001.38	28.8196
2001.46	28.0628
2001.54	27.6558
2001.63	26.6527
2001.71	26.539
2001.79	26.8479
2001.88	26.9598
2001.96	26.5399
2002.04	27.2509
2002.13	28.5654
2002.21	29.5981
2002.29	30.3794
2002.38	29.9994
2002.46	28.5771
2002.54	27.8309
2002.63	28.3039
2002.71	28.1862
2002.79	28.1199