# Calder fire data from Seven Lakes, Colorado - IMPD USPSV001 #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: http://www.ncdc.noaa.gov/paleo/study/19367 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/uspsv001.txt # Archive: Fire History # # Parameter_Keywords: charcoal sediment #--------------------------------------- # Contribution_Date # Date: 2015-09-16 #--------------------------------------- # Title # Study_Name: Calder fire data from Seven Lakes, Colorado - IMPD USPSV001 #--------------------------------------- # Investigators # Investigators: Calder, John, W.; Stopka, Cody; Parker, Dusty; Jiménez-Moreno, Gonzalo; Shuman, Bryan, N. #--------------------------------------- # Description and Notes # Description: Chronology and macroscopic charcoal counts (number of pieces >125 microns) from Seven Lakes in the Mount Zirkel Wilderness Area, Colorado # Provided Keywords: fire climate, warming # Calder et al. includes datasets for twelve sites, including the one documented here. A list of all dataset site names and URLs follow: # Lake Eileen http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/uselk001.txt # Gem Lake http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/usgem001.txt # Gold Creek Lake http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/usgcr001.txt # Hidden Lake near Mount Zirkel Wilderness Area http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/usphd001.txt # Hinman Lake http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/usphn001.txt # Middle Rainbow Lake http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/usprb001.txt # Round Lake near Mount Zirkel Wilderness Area http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/usprd001.txt # Seven Lakes http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/uspsv001.txt # Summit Lake near Mount Zirkel Wilderness Area http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/ussbw001.txt # Teal Lake http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/usptl001.txt # Tiago Lake http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/ustig001.txt # Whale Lake http://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/charcoal/northamerica/uspwl001.txt # # Contact person: Calder, John # Sample storage location: University of Wyoming # Sampling date: 8/16/2011 # Site size(ha): 3.2 # State/Province: Colorado # Water depth(cm): 575 # Sampling device: Modified Livingston with a polycarbonate tube # Analysis method: Macroscopic charcoal counts - see Calder et al. 2015 for details #--------------------------------------- # Publication # Authors: Calder, W. John; Stopka, Cody; Parker, Dusty; Jiménez-Moreno, Gonzalo; Shuman, Bryan # Published_Date_or_Year: 2015 # Published_Title: Medieval Warming initiated exceptionally large wildfire outbreaks in the Rock Mountains # Journal_Name: Proceedings of the National Academy of Sciences # Volume: # Issue: # Pages: # Report Number: # DOI: 10.1073/pnas.1500796112 # Abstract: Many of the largest wildfires in US history burned in recent decades, and climate change explains much of the increase in area burned. The frequency of extreme wildfire weather will increase with continued warming, but many uncertainties still exist about future fire regimes, including how the risk of large fires will persist as vegetation changes. Past fire-climate relationships provide an opportunity to constrain the related uncertainties, and reveal widespread burning across large regions of western North America during past warm intervals. Whether such episodes also burned large portions of individual landscapes has been difficult to determine, however, because uncertainties with the ages of past fires and limited spatial resolution often prohibit specific estimates of past area burned. Accounting for these challenges in a subalpine landscape in Colorado, we estimated century-scale fire synchroneity across 12 lakesediment charcoal records spanning the past 2,000 y. The percentage of sites burned only deviated from the historic range of variability during the Medieval Climate Anomaly (MCA) between 1,200 and 850 y B.P., when temperatures were similar to recent decades. Between 1,130 and 1,030 y B.P., 83% (median estimate) of our sites burned when temperatures increased ~0.5 degrees C relative to the preceding centuries. Lake-based fire rotation during the MCA decreased to an estimated 120 y, representing a 260% higher rate of burning than during the period of dendroecological sampling (360 to -60 y B.P.). Increased burning, however, did not persist throughout the MCA. Burning declined abruptly before temperatures cooled, indicating possible fuel limitations to continued burning. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: BCS-0845129 #--------------------------------------- # Site Information # Site_Name: Seven Lakes # Location: Colorado # Country: United States of America # Northernmost_Latitude: 40.896 # Southernmost_Latitude: 40.896 # Easternmost_Longitude: -106.681 # Westernmost_Longitude: -106.681 # Elevation: 3276 #--------------------------------------- # Data_Collection # Collection_Name: USPSV001 CHAR # First_Year: 4243 # Last_Year: -60 # Time_Unit: cal yr BP # Core_Length: # Notes: Core was extracted in -61 BP but the Bayesian based age model (see Calder et al. 2015 for age model details) would sometimes ascribe the previous year as the median age, hence the youngest age is -60 and not -61 #--------------------------------------- # Chronology: # Core was extracted in -61 BP but the R package, Bchron, that generated the age model (see Calder et al. 2015 for age model details) would sometimes ascribe the previous year as the median age, hence the youngest age in the charcoal data is -60 and not -61 # Depth (cm) Lab Number Material Age (14C BP +/-1Sigma ) # 8 Sediment surface # 33.5-35.5 UCIAMS-127556 Charcoal 1150+/-15 # 47-48.5 UCIAMS-127557 Charcoal 1620+/-15 # 78-78.5 UCIAMS-119934 Picea needle 2515+/-20 # 102.5-103 UCIAMS-119940 Picea needle 3455+/-25 # 137-138 UCIAMS-102568 Charcoal 3840+/-40 # #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## depth-cm-top depth,,,cm,,,top depth,,N ## depth-cm-bottom depth,,,cm,,,bottom depth,,N ## age-calBP-top age,,,calendar years BP,,Fire History,top of sample,,N ## age-calBP-bottom age,,,calendar years BP,,Fire History,top of sample,,N ## vol-wetsed volume,wet sediment,,ml,,Fire History,used for charcoal counts,,N ## char>125um charcoal,,,counts,,Fire History,>125 um,,N #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: n/a depth-cm-top depth-cm-bottom age-calBP-top age-calBP-bottom vol-wetsed char>125um 8 8.5 -60 -39 2 19 8.5 9 -39 -17 2 28 9 9.5 -17 4 2 15 9.5 10 4 26 2 11 10 10.5 26 48 1 8 10.5 11 48 69 2 17 11 11.5 69 91 2 8 11.5 12 91 112 2 23 12 12.5 112 134 2 22 12.5 13 134 155 2 23 13 13.5 155 177 2 6 13.5 14 177 199 2 12 14 14.5 199 220 2 9 14.5 15 220 242 2 2 15 15.5 242 263 2 1 15.5 16 263 285 2 13 16 16.5 285 306 2 9 16.5 17 306 328 2 12 17 17.5 328 349.5 2 17 17.5 18 349.5 371 2 15 18 18.5 371 393 2 22 18.5 19 393 414 2 15 19 19.5 414 436 2 16 19.5 20 436 457 2 16 20 20.5 457 479 2 9 20.5 21 479 500 2 15 21 21.5 500 521 2 12 21.5 22 521 543 2 15 22 22.5 543 565 2 16 22.5 23 565 586 2 10 23 23.5 586 607 2 15 23.5 24 607 629 2 10 24 24.5 629 650 2 11 24.5 25 650 672 2 8 25 25.5 672 694 2 8 25.5 26 694 715 2 9 26 26.5 715 736.5 2 23 26.5 27 736.5 758 2 13 27 27.5 758 779 2 11 27.5 28 779 801 2 10 28 28.5 801 822 2 17 28.5 29 822 844 2 12 29 29.5 844 865 2 16 29.5 30 865 886 2 17 30 30.5 886 908 2 11 30.5 31 908 930 2 14 31 31.5 930 951 2 10 31.5 32 951 972 2 9 32 32.5 972 994.5 2 7 32.5 33 994.5 1018 2 9 33 33.5 1018 1040 2 13 33.5 34 1040 1061 2 18 34 34.5 1061 1079 2 22 34.5 35 1079 1097 2 27 35 35.5 1097 1114 2 31 35.5 36 1114 1132 2 8 36 36.5 1132 1150 2 26 36.5 37 1150 1167 2 11 37 37.5 1167 1185 2 10 37.5 38 1185 1203 2 6 38 38.5 1203 1221 2 6 38.5 39 1221 1239 2 15 39 39.5 1239 1256.5 2 20 39.5 40 1256.5 1275 2 14 40 40.5 1275 1293 2 19 40.5 41 1293 1311 2 18 41 41.5 1311 1329 2 19 41.5 42 1329 1348 2 17 42 42.5 1348 1367 2 15 42.5 43 1367 1385 2 13 43 43.5 1385 1403 2 14 43.5 44 1403 1421 2 14 44 44.5 1421 1439 2 22 44.5 45 1439 1458 2 25 45 45.5 1458 1476 2 7 45.5 46 1476 1494 2 25 46 46.5 1494 1513 2 7 46.5 47 1513 1531 2 19 47 47.5 1531 1548 2 41 47.5 48 1548 1566.5 2 56 48 48.5 1566.5 1584 2 38 48.5 49 1584 1601 2 31 49 49.5 1601 1619 2 15 49.5 50 1619 1636 2 13 50 50.5 1636 1653 1 5 50.5 51 1653 1670 1 8 51 51.5 1670 1687 1 10 51.5 52 1687 1705 1 6 52 52.5 1705 1721 1 17 52.5 53 1721 1739 1 8 53 53.5 1739 1756 1 6 53.5 54 1756 1772 1 8 54 54.5 1772 1789 1 20 54.5 55 1789 1806 1 14 55 55.5 1806 1822 1 11 55.5 56 1822 1840 1 12 56 56.5 1840 1857 1 10 56.5 57 1857 1874 1 14 57 57.5 1874 1891 1 12 57.5 58 1891 1908 1 15 58 58.5 1908 1924 1 14 58.5 59 1924 1942 1 4 59 59.5 1942 1958 1 7 59.5 60 1958 1975 1 9 60 60.5 1975 1992 1 12 60.5 61 1992 2009 1 17 61 61.5 2009 2026 1 5 61.5 62 2026 2043 1 29 62 62.5 2043 2060 1 7 62.5 63 2060 2076 1 11 63 63.5 2076 2094 1 7 63.5 64 2094 2110 1 3 64 64.5 2110 2127 1 7 64.5 65 2127 2144 1 8 65 65.5 2144 2160 1 8 65.5 66 2160 2177 1 3 66 66.5 2177 2193 1 7 66.5 67 2193 2210 1 3 67 67.5 2210 2227 1 3 67.5 68 2227 2244 1 1 68 68.5 2244 2262 1 12 68.5 69 2262 2278 1 8 69 69.5 2278 2294.5 1 6 69.5 70 2294.5 2312 1 6 70 70.5 2312 2329 1 7 70.5 71 2329 2345 1 9 71 71.5 2345 2363 1 6 71.5 72 2363 2380 1 0 72 72.5 2380 2397 1 8 72.5 73 2397 2414 1 17 73 73.5 2414 2430 1 9 73.5 74 2430 2447 1 6 74 74.5 2447 2463 1 7 74.5 75 2463 2480 1 4 75 75.5 2480 2496 1 9 75.5 76 2496 2512 1 15 76 76.5 2512 2529 1 8 76.5 77 2529 2546 1 18 77 77.5 2546 2566 1 19 77.5 78 2566 2593 1 12 78 78.5 2593 2634.5 1 17 78.5 79 2634.5 2659 1 12 79 79.5 2659 2685 1 29 79.5 80 2685 2710 1 25 80 80.5 2710 2732 1 23 80.5 81 2732 2752 1 25 81 81.5 2752 2774 1 16 81.5 82 2774 2795 1 19 82 82.5 2795 2816.5 1 18 82.5 83 2816.5 2837 1 11 83 83.5 2837 2858 1 9 83.5 84 2858 2879 1 15 84 84.5 2879 2901 1 15 84.5 85 2901 2922 1 26 85 85.5 2922 2945 1 46 85.5 86 2945 2967 1 18 86 86.5 2967 2989 1 17 86.5 87 2989 3011.5 1 9 87 87.5 3011.5 3035 1 16 87.5 88 3035 3057.5 1 20 88 88.5 3057.5 3080 1 24 88.5 89 3080 3102 1 25 89 89.5 3102 3125 1 14 89.5 90 3125 3147 1 18 90 90.5 3147 3169 1 13 90.5 91 3169 3191 1 17 91 91.5 3191 3214 1 10 91.5 92 3214 3236 1 20 92 92.5 3236 3259 1 21 92.5 93 3259 3281 1 14 93 93.5 3281 3304 1 18 93.5 94 3304 3326 1 12 94 94.5 3326 3347 1 20 94.5 95 3347 3369 1 21 95 95.5 3369 3391 1 15 95.5 96 3391 3412 1 40 96 96.5 3412 3434 1 11 96.5 97 3434 3456 1 25 97 97.5 3456 3479 1 16 97.5 98 3479 3501 1 15 98 98.5 3501 3524 1 11 98.5 99 3524 3547 1 12 99 99.5 3547 3568 1 15 99.5 100 3568 3590 1 3 100 100.5 3590 3613 1 13 100.5 101 3613 3635 1 9 101 101.5 3635 3657 1 12 101.5 102 3657 3681 1 23 102 102.5 3681 3705 1 12 102.5 103 3705 3719 1 6 103 103.5 3719 3728 1 12 103.5 104 3728 3737 1 27 104 104.5 3737 3746 1 20 104.5 105 3746 3755 1 18 105 105.5 3755 3765 1 12 105.5 106 3765 3773 1 10 106 106.5 3773 3781 1 17 106.5 107 3781 3789 1 16 107 107.5 3789 3797 1 23 107.5 108 3797 3806 1 17 108 108.5 3806 3814 1 26 108.5 109 3814 3822 1 17 109 109.5 3822 3830 1 31 109.5 110 3830 3839 1 11 110 110.5 3839 3846 1 15 110.5 111 3846 3854 1 14 111 111.5 3854 3862 1 17 111.5 112 3862 3869 1 8 112 112.5 3869 3877 1 8 112.5 113 3877 3885 1 11 113 113.5 3885 3893 1 30 113.5 114 3893 3901 1 3 114 114.5 3901 3909 1 3 114.5 115 3909 3917 1 8 115 115.5 3917 3925 1 9 115.5 116 3925 3933 1 23 116 116.5 3933 3941 1 14 116.5 117 3941 3948 1 16 117 117.5 3948 3955.5 1 15 117.5 118 3955.5 3964 1 39 118 118.5 3964 3972 1 18 118.5 119 3972 3979 1 33 119 119.5 3979 3987 1 7 119.5 120 3987 3994 1 20 120 120.5 3994 4001 1 7 120.5 121 4001 4008 1 4 121 121.5 4008 4015 1 4 121.5 122 4015 4024 1 6 122 122.5 4024 4032 1 7 122.5 123 4032 4039.5 1 8 123 123.5 4039.5 4047.5 1 14 123.5 124 4047.5 4055 1 9 124 124.5 4055 4063 1 14 124.5 125 4063 4070 1 10 125 125.5 4070 4077 1 6 125.5 126 4077 4085 1 21 126 126.5 4085 4092 1 3 126.5 127 4092 4100 1 7 127 127.5 4100 4107 1 2 127.5 128 4107 4115 1 5 128 128.5 4115 4123 1 3 128.5 129 4123 4130 1 7 129 129.5 4130 4138 1 23 129.5 130 4138 4145 1 5 130 130.5 4145 4153 1 25 130.5 131 4153 4160.5 1 23 131 131.5 4160.5 4169 1 12 131.5 132 4169 4177.5 1 19 132 132.5 4177.5 4184.5 1 5 132.5 133 4184.5 4193 1 9 133 133.5 4193 4199 1 17 133.5 134 4199 4208.5 1 25 134 134.5 4208.5 4217 1 5 134.5 135 4217 4224 1 6 135 135.5 4224 4233 1 2 135.5 136 4233 4243 1 19