Climate drivers of regionally synchronous fires in the inland Northwest (1651–1900)
Emily K. Heyerdahl A G , Donald McKenzie B , Lori D. Daniels C , Amy E. Hessl D , Jeremy S. Littell E and Nathan J. Mantua F
A UDSA Forest Service, Rocky Mountain Research Station, 5775 US West Highway 10, Missoula, MT 59808, USA.
B UDSA Forest Service, Pacific Northwest Research Station, 400 N 34th Street, Suite 201, Seattle, WA 98103, USA.
C University of British Columbia, Department of Geography, 1984 West Mall, Vancouver, BC V6T 1Z2, Canada.
D West Virginia University, Department of Geology and Geography, Box 6300, Morgantown, WV 26506, USA.
E University of Washington, College of Forest Resources, Box 352100, Seattle WA 98195-2100, USA.
F University of Washington, Climate Impacts Group, Box 354235, Seattle, WA 98195-4235, USA.
G Corresponding author. Email: firstname.lastname@example.org
International Journal of Wildland Fire 17(1) 40-49 http://dx.doi.org/10.1071/WF07024
Submitted: 11 November 2006 Accepted: 10 August 2007 Published: 15 February 2008
We inferred climate drivers of regionally synchronous surface fires from 1651 to 1900 at 15 sites with existing annually accurate fire-scar chronologies from forests dominated by ponderosa pine or Douglas-fir in the inland Northwest (interior Oregon, Washington and southern British Columbia). Years with widespread fires (35 years with fire at 7 to 11 sites) had warm spring–summers and warm-dry summers, whereas years with no fires at any site (18 years) had the opposite conditions. Spring climate likely affected the length of the fire season via the effects of snowmelt on soil and fuel moisture, whereas summer climate influenced fuel moisture during the fire season. Climate in prior years was not a significant driver of regionally synchronous surface fires, likely because fuels were generally sufficient for the ignition and spread of such fires in these forests. Fires occurred significantly more often than expected by chance when the El Niño–Southern Oscillation (ENSO) and the Pacific Decadal Oscillation (PDO) were both warm phase and less often when they were both cool phase. Interactions between large-scale climate patterns influenced fire synchrony in the inland Northwest because phases of ENSO and PDO were associated with changes in the frequency of warm-dry v. cool-wet spring–summer climate.
Additional keywords: British Columbia, El Niño–Southern Oscillation, fire scars, Oregon, Pacific Decadal Oscillation, Palmer Drought Severity Index, temperature, Washington.
Baisan CHSwetnam TW1990Fire history on a desert mountain range, Rincon Mountain Wilderness, Arizona, USA.Canadian Journal of Forest Research2015591569doi:10.1139/X90-208
Briffa KR, Jones PD, Schweingruber FH (1992) Tree-ring density reconstructions of summer temperature patterns across western North America since 1600. Journal of Climate 5, 735–754. (IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series 2002–067. NOAA/NGDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/recons.html [Verified 4 January 2008])
Brown TJHall BL1999The use of t values in climatological composite analysis.Journal of Climate1229412944doi:10.1175/1520-0442(1999)012<2941:TUOTVI>2.0.CO;2
Collins BMOmi PNChapman PL2006Regional relationships between climate and wildfire-burned area in the Interior West, USA.Canadian Journal of Forest Research36699709doi:10.1139/X05-264
Cook ER, Woodhouse CA, Eakin CM, Meko DM, Stahle DW (2004) Long-term aridity changes in the western United States. Science 306, 1015–1018. (IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series 2004–045. NOAA/NGDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/recons.html [Verified 4 January 2008])
Daniels LD, Watson E (2003) Climate–fire–vegetation interactions in Cariboo forests: a dendroclimatic analysis. Forest Innovation and Investment, Forest Research Program. (Vancouver, BC)
D’Arrigo R, Villalba R, Wiles G (2001) Tree-ring estimates of Pacific decadal climate variability. Climate Dynamics 18, 219–224. (IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series 2005–020. NOAA/NGDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/recons.html [Verified 4 January 2008])
D’Arrigo RD, Cook ER, Wilson RJ, Allan R, Mann ME (2005) On the variability of ENSO over the past six centuries. Geophysical Research Letters 32, L03711. doi:10.1029/2004GL022055 (IGBP PAGES/World Data Center-A for Paleoclimatology Data Contribution Series 2000–052. NOAA/NGDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/recons.html [Verified 4 January 2008])
Environment Canada (2005a) ‘Canadian Climate Normals 1971–2000.’ (Meteorological Service of Canada, National Archives and Data Management Branch: Ottawa, ON) Available at climate.weatheroffice.ec.gc.ca/climate_normals/index_e.html [Verified 4 January 2008]
Environment Canada (2005b) ‘2002 CD-CD West CD.’ (Meteorological Service of Canada, National Archives and Data Management Branch: Ottawa, ON) Available at climate.weatheroffice.ec.gc.ca/prods_servs/cdcd_iso_e.html [Verified 4 January 2008]
Everett RL, Schellhaas R, Keenum D, Spurbeck D, Ohlson P (2000) Fire history in the ponderosa pine/Douglas-fir forests on the east slope of the Washington Cascades. Forest Ecology and Management 129, 207–225. (Data archived with the International Multiproxy Paleofire Database, IGBP PAGES/World Data Center for Paleoclimatology. NOAA/NCDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/impd/paleofire.htmldoi:10.1016/S0378-1127(99)00168-1 [Verified 4 January 2008]
Ferguson SA (1999) Climatology of the interior Columbia River Basin. USDA Forest Service, Pacific Northwest Research Station General Technical Report PNW-GTR-445. (Portland, OR)
Galbraith WAAnderson EW1991Grazing history of the Northwest.Rangelands13213218
Gedalof ZPeterson DLMantua NJ2005Atmospheric, climatic and ecological controls on extreme wildfire years in the Northwestern United States.Ecological Applications15154174doi:10.1890/03-5116
Gibson CE (2006) A northern Rocky Mountain polygon fire history: accuracy, limitations, strengths and recommended protocol of digital fire perimeter data. MS Thesis, University of Idaho, Moscow, ID.
Grissino-Mayer HD2001FHX2 – Software for analyzing temporal and spatial patterns in fire regimes from tree rings.Tree-Ring Research57115124
Gershunov ABarnett TPCayan DR1999North Pacific interdecadal oscillation seen as factor in ENSO-related North American climate anomalies.EOS, Transactions, American Geophysical Union802530doi:10.1029/99EO00019
Hessburg PFAgee JK2003An environmental narrative of inland Northwest United States forests, 1800–2000.Forest Ecology and Management1782359doi:10.1016/S0378-1127(03)00052-5
Hessburg PFSalter RBJames KM2007Re-examining fire severity relations in pre-management era mixed conifer forests: Inferences from landscape patterns of forest structure.Landscape Ecology22524doi:10.1007/S10980-007-9098-2
Hessl AE, McKenzie D, Schellhaas R (2004) Drought and Pacific Decadal Oscillation linked to fire occurrence in the inland Pacific Northwest. Ecological Applications 14, 425–44. (Data archived with the International Multiproxy Paleofire Database, IGBP PAGES/World Data Center for Paleoclimatology. NOAA/NCDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/impd/paleofire.html [Verified 4 January 2008])
Hessl AMiller JKernan JKeenum DMcKenzie D2007Mapping wildfire boundaries from binary point data: comparing approaches.The Professional Geographer5987104doi:10.1111/J.1467-9272.2007.00593.X
Heyerdahl EK, Brubaker LB, Agee JK (2001) Spatial controls of historical fire regimes, a multiscale example from the interior West, USA. Ecology 82, 660–678. (Data archived with the International Multiproxy Paleofire Database, IGBP PAGES/World Data Center for Paleoclimatology. NOAA/NCDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/impd/paleofire.html [Verified 4 January 2008])
Heyerdahl EKBrubaker LBAgee JK2002Annual and decadal climate forcing of historical fire regimes in the interior Pacific Northwest.The Holocene12597604doi:10.1191/0959683602HL570RP
Heyerdahl EK, Lertzman KP, Karpuk S (2007) Local-scale controls of a low-severity fire regime (1750–1950), southern British Columbia, Canada. Ecoscience 14, 40–47. (Data archived with the International Multiproxy Paleofire Database, IGBP PAGES/World Data Center for Paleoclimatology. NOAA/NCDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/impd/paleofire.html [Verified 4 January 2008])
Heyerdahl EKMorgan PRiser JPIIin pressMulti-season climate synchronized widespread historical fires in dry forests (1630–1900), Northern Rockies, USA.Ecology
Insightful Inc. (2002) ‘Splus 6 for Windows’. (Insightful Inc.: Seattle, WA)
Kitzberger TBrown PMHeyerdahl EKSwetnam TWVeblen TT2007Contingent Pacific–Atlantic Ocean influence on multi-century wildfire synchrony over western North America.Proceedings of the National Academy of Sciences of the United States of America104543548doi:10.1073/PNAS.0606078104
Littell JS (2006) Climate impacts to forest ecosystem processes: Douglas-fir growth in northwestern US mountain landscapes and area burned by wildfire in western US ecoprovinces, PhD Dissertation, University of Washington, Seattle.
Little ELJr (1971) Atlas of United States Trees, Volume 1, Conifers and Important Hardwoods. USDA Miscellaneous Publication 1146. (Washington, DC)
Mantua NJ (2002) La Niña impacts on the Pacific Northwest. In ‘La Niña and its impacts: facts and speculation’. (Ed. M Glantz) pp. 102–114. (United Nations University Press: Tokyo, Japan)
McCabe GJDettinger MD1999Decadal variability in the strength of ENSO teleconnections with precipitation in the western United States.International Journal of Climatology1913991410doi:10.1002/(SICI)1097-0088(19991115)19:13<1399::AID-JOC457>3.0.CO;2-A
McCullagh P, Nelder JA (1989) ‘Generalized linear models.’ p. 511. (Chapman and Hall: London)
McKenzie DGedalof ZPeterson DLMote P2004Climatic change, wildfire, and conservation.Conservation Biology18890902doi:10.1111/J.1523-1739.2004.00492.X
Mooney CZ, Duval RD (1993) ‘Bootstrapping, a non-parametric approach to statistical inference.’ Sage University Paper Series on Quantitative Applications in the Social Sciences 07–095. (Sage Publications: Newbury Park, CA)
Moore RDMcKendry IG1996Spring snowpack anomaly patterns and winter climatic variability, British Columbia, Canada.Water Resources Research32623632doi:10.1029/95WR03640
Morgan PHeyerdahl EKGibson CEin pressMulti-season climate synchronized widespread forest fires throughout the 20th-century, Northern Rocky Mountains.Ecology
Murphy AHWinkler RL1987A general framework for forecast verification.Monthly Weather Review11513301338doi:10.1175/1520-0493(1987)115<1330:AGFFFV>2.0.CO;2
Preisendorfer RW (1988) ‘Principal component analysis in meteorology and oceanography.’ (Elsevier: New York)
Redmond KTKoch RW1991Surface climate and streamflow variability in the western United States and their relationship to large-scale circulation indices.Water Resources Journal2723812399doi:10.1029/91WR00690
Robbins WG, Wolf DW (1994) Landscape and the intermontane Northwest, an environmental history. USDA Forest Service, Pacific Northwest Research Station General Technical Report PNW-GTR-319. (Portland, OR)
SAS Institute (2003) ‘SAS Release 9.1.’ (SAS Institute: Cary, NC)
Seager RKushnir YHerweijer CNaik NVelez J2005Modeling of tropical forcing of persistent droughts and pluvials over western North America: 1856–2000.Journal of Climate1840654088doi:10.1175/JCLI3522.1
Swetnam TW, Baisan CH (2003) Tree-ring reconstructions of fire and climate history in the Sierra Nevada and Southwestern United States. In ‘Fire and climatic change in temperate ecosystems of the Western Americas’. (Eds TT Veblen, WL Baker, G Montenegro, TW Swetnam) pp. 158–195. (Springer-Verlag: New York)
Swetnam TWBetancourt JL1990Fire–Southern Oscillation relations in the southwestern United States.Science24910171020doi:10.1126/SCIENCE.249.4972.1017
Swetnam TWAllen CDBetancourt JL1999Applied historical ecology, using the past to manage for the future.Ecological Applications911891206doi:10.1890/1051-0761(1999)009[1189:AHEUTP]2.0.CO;2
Swets JA1988Measuring the accuracy of diagnostic systems.Science24012851293doi:10.1126/SCIENCE.3287615
Taylor AHSkinner CN2003Spatial patterns and controls on historical fire regimes and forest structure in the Klamath Mountains.Ecological Applications13704719doi:10.1890/1051-0761(2003)013[0704:SPACOH]2.0.CO;2
Westerling ALSwetnam TW2003Interannual to decadal drought and wildfire in the western United States.EOS, Transactions, American Geophysical Union84545560doi:10.1029/2003EO490001
Westerling ALHidalgo HGCayan DRSwetnam TW2006Warming and earlier spring increase western US forest wildfire activity.Science313940943doi:10.1126/SCIENCE.1128834
Wright CS, Agee JK (2004) Fire and vegetation history in the eastern Cascade Mountains, Washington. Ecological Applications 14, 443–459. (Data archived with the International Multiproxy Paleofire Database, IGBP PAGES/World Data Center for Paleoclimatology. NOAA/NCDC Paleoclimatology Program, Boulder, CO. Available at www.ncdc.noaa.gov/paleo/impd/paleofire.html [Verified 4 January 2008])