# Western North America Network of Moisture Sensitive Proxy Records from 6000 yr BP #----------------------------------------------------------------------- # World Data Service 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: https://www.ncdc.noaa.gov/paleo/study/23710 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/hydroclimate/hermann2018/hermann2018-aggregatesite.txt # Description: NOAA location of this template # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/hydroclimate/hermann2018/hermann2018-finalnetwork.txt # Description: NOAA template for final network of sites from Aggregate Site data # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/hydroclimate/hermann2018/hermann2018-RecordsUsed_Metadata.txt # Description: NOAA template with metadata about the records used in this project # # # Archive: Climate Reconstructions # # Dataset_DOI: # # Parameter_Keywords: precipitation #--------------------------------------- # Contribution_Date # Date: 2018-03-26 #--------------------------------------- # File_Last_Modified_Date # Date: 2018-03-26 #--------------------------------------- # Title # Study_Name: Western North America Network of Moisture Sensitive Proxy Records from 6000 yr BP #--------------------------------------- # Investigators # Investigators: Hermann, N.W.; Oster, J.L.; Ibarra, D.E. #--------------------------------------- # Description_Notes_and_Keywords # Description: Provided Keywords: mid-Holocene, proxy-model comparison, terrestrial hydroclimate #--------------------------------------- # Publication # Authors: Hermann, N.W., J.L. Oster, and D.E. Ibarra # Published_Date_or_Year: 2018 # Published_Title: Spatial patterns and driving mechanisms of mid-Holocene hydroclimate in western North America # Journal_Name: Journal of Quaternary Science # Volume: # Edition: # Issue: # Pages: # Report Number: # DOI: 10.1002/jqs.3023 # Online_Resource: # Full_Citation: # Abstract: Mid-Holocene paleoclimate proxy records from drought-sensitive western North America suggest widespread aridity in areas dominated by winter precipitation. We present spatial comparisons of a diverse network of moisture-sensitive proxies with 12 global circulation model simulations from the Paleoclimate Model Intercomparison Project to determine the most important atmospheric drivers behind observed mid-Holocene aridity in this region. Although model-proxy agreement is low for most models, in part reflecting small mid-Holocene precipitation anomalies, three show relatively strong agreement by successfully simulating arid conditions across the Pacific Northwest. The model that shows the strongest spatial agreement with the proxy network reveals an anticyclonic wind anomaly that is similar to but weaker than anomalies noted during westwide drought episodes of the past 500 years. This model suggests increased transient upper level ridging that reduced winter water vapor transport from the south-west during the mid-Holocene. These mechanisms are similar to those suggested to have supported megadrought conditions in western North America during the Medieval Climate Anomaly and which are also simulated in anthropogenic warming scenarios. Future work on quantitative proxy records to enhance temporal and spatial coverage, and explicitly address issues of seasonality, will improve the quality of future climate model–data comparison studies. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: AGS-1203701, AGS-1554998 #--------------------------------------- # Site Information # Site_Name: Western North America # Location: North America # Country: United States of America # Northernmost_Latitude: 50 # Southernmost_Latitude: 28 # Easternmost_Longitude: -105 # Westernmost_Longitude: -125 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: WNAm Aggregate Sites Hermann2018 # First_Year: 6000 # Last_Year: 6000 # Time_Unit: cal yr BP # Core_Length: # Notes: #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # 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) ## Site_Identifier sample identification,,,unitless,,climate reconstructions,,,C,number of aggregated site or name of sites aggregated ## RecordType notes,,,unitless,,climate reconstructions,,,C,Type of paleoclimate archive ## Latitude latitude,,,degree north,,climate reconstructions,,,N, ## Longitude longitude,,,degree east,,climate reconstructions,,,N, ## Category notes,,,unitless,,paleolimnology; climate reconstructions,,,C,hydroclimatic designation at 6 ka ## References notes,,,unitless,,climate reconstructions,,,C,Reference for sample ## AggConfidence notes,,,unitless,,paleolimnology; climate reconstructions,,,C,Aggregate Confidence between site designations noted by Robust, Majority, or Conflict #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: NA Site_Identifier RecordType Latitude Longitude Category References AggConfidence 1 NA 48.773 -125.08 No Change NA Robust Effingham Island Bog Terrestrial Pollen 48.87 -125.32 No Change Brown et al 2006 NA Whyac Lake Bog Terrestrial Pollen 48.67 -124.84 No Change Brown et al 2006 NA 2 NA 47.942 -124.49 Drier NA Robust Hoh River Valley Site Terrestrial Sediment 47.83 -124.5 Drier Heusser 1974 NA Wentworth Lake Terrestrial Sediment 48.01 -124.53 Drier Heusser 1973 NA 3 NA 48.542 -123.73 No Change NA Majority East Sooke Fen Terrestrial Sediment 48.35 -123.68 No Change Brown et al 2006 NA Heal Lake Lake Sediment 48.53 -123.47 No Change Brown et al 2006 NA Langford Lake Lake Sediment 48.45 0 No Change Brown et al 2006 NA Pixie Lake Lake Sediment 48.6 -124.2 No Change Brown et al 2006 NA Porphyry Lake Lake Sediment 48.91 -123.83 Drier Brown and Hebda 2003 NA Rhamnus Lake Lake Sediment 48.63 -123.72 No Change Brown et al 2006 NA Walker Lake Lake Sediment 48.53 -124 No Change Brown and Hebda 2003 NA 4 NA 49.191 -124.12 No Change NA Robust Boomerang Lake Lake Sediment 49.18 -124.16 No Change Brown et al 2006 NA Enos Lake Lake Sediment 49.28 -124.16 No Change Brown et al 2006 NA 5 NA 49.028 -122.27 Drier NA Robust Marion and Surprise Lakes Lake Sediment 49.315 -122.555 Drier Mathewes 1973 NA Mosquito Lake Bog Terrestrial Pollen 48.77 -122.12 Drier Hansen and Easterbrook 1974 NA Pangborn Bog Terrestrial Pollen 49 -122.27 Drier Hansen and Easterbrook 1974 NA 6 NA 48.255 -118.61 Drier NA Robust Simpson's Flatts Terrestrial Sediment 48.33 -118.58 Drier Mack et al., 1978a NA Waitts Lake Lake Sediment 48.17 -118.67 Drier Thompson et al 1993 NA 7 NA 48.694 -119.34 Drier NA Robust Bonaparte Meadows Terrestrial Sediment 48.8 -119.06 Drier Mack et al 1979 NA Mud Lake Terrestrial Sediment 48.59 -119.63 Drier Mack et al 1979 NA 8 NA 46.761 -121.96 Drier NA Majority Davis Lake Terrestrial Sediment 46.58 -122.25 Drier Barnosky 1981 NA Jay Bath Terrestrial Sediment 46.77 -121.77 Drier Dunwiddie 1986 NA Log Wallow Terrestrial Sediment 46.78 -121.75 Drier Dunwiddie 1986 NA Mineral Lake Terrestrial Sediment 46.73 -122.2 No Change Tsukada et al., 1982 NA Reflection Pond Lake Sediment 46.77 -121.73 Drier Dunwiddie 1986 NA 9 NA 48.236 115.37 Drier NA Conflict McKillop Creek Pond Terrestrial Sediment 48.15 115.26 No Change Mack et al 1983 NA Teepee Lake Terrestrial Sediment 48.33 -115.5 Drier Thompson et al 1993 NA 10 NA 48.758 -117.19 Drier NA Robust Big Meadow Terrestrial Sediment 48.92 -117.42 Drier Mack et al 1978c NA Hager Lake Terrestrial Sediment 48.6 -116.97 Drier Mack et al 1978d NA 11 NA 44.93 -110.66 Drier NA Conflict Blacktail Pond Terrestrial Sediment 44.96 -110.6 Drier Beiswenger 1991 NA Gardiners Hole Terrestrial Sediment 44.92 -110.73 No Change Thompson et al 1993 NA 12 NA 45.091 -108.45 Drier NA Robust Big Pryor Packrat Middens 45.13 -108.65 Drier Lyford et al 2002 NA East Pryor Packrat Middens 45.05 -108.25 Drier Lyford et al 2002 NA 13 NA 42.066 -123.42 No Change NA Conflict Bolan Lake Lake Sediment 42.02 -123.46 Drier Briles et al 2005 NA Oregon Caves National Monument Speleothem 42.1 -123.41 Wetter Ersek et al 2012 NA 14 NA 41.333 -122.54 Drier NA Robust Bluff Lake Lake Sediment 41.35 -122.56 Drier Mohr et al 2000 NA Cedar Lake Lake Sediment 41.21 -122.5 Drier West, 1989 NA Mumbo Lake Lake Sediment 41.91 -122.51 Drier Daniels et al., 2005 NA Crater Lake Lake Sediment 41.38 -122.58 Drier Mohr et al 2000 NA 15 NA 42.189 -111.76 Drier NA Robust Bear Lake Lake Sediment 42.02 111.36 Drier Colman et al., 2009 NA Minnetonka Cave Speleothem 42.09 -111.52 Drier Lundeen et al 2013 NA 16 NA 39.711 -107.34 Drier NA Robust Bison Lake Lake Sediment 39.77 -107.35 Drier Anderson 2012 NA Yellow Lake Lake Sediment 39.65 -107.35 Drier Anderson 2012 NA 17 NA 38.813 -106.93 Wetter NA Robust Alkali Lake Lake Sediment 38.75 -106.83 Wetter Markgraf and Scott 1981 NA Keystone Iron Bog Terrestrial Sediment 38.87 -107.03 Wetter Fall 1988 NA 18 NA 37.596 -109.61 Wetter NA Robust Allen Canyon Packrat Middens 37.78 109.58 Wetter Betancourt 1984 NA Fishmouth Cave Packrat Middens 37.42 -109.65 Wetter Betancourt 1984 NA 19 NA 39.326 -114.11 Drier NA Conflict Council Hall Cave Packrat Middens 39.33 -114.1 No Change Thompson 1984 NA Lehman Cave Speleothem 39.01 -114.22 Drier Steponaitis et al 2015 NA 20 NA 36.54 -115.15 Wetter NA Majority Desert View Packrat Middens 36.63 -115.03 Wetter Thompson et al 1993 NA Sheep Range Packrat Middens 36.58 -115.25 Wetter Spaulding 1980 NA Tule Springs Terrestrial Sediment 36.32 -115.18 No Change Thompson et al 1993 NA 21 NA 38.074 -119.47 Drier NA Majority Kirman Lake Lake Sediment 38.33 -119.5 Drier MacDonald et al., 2016 NA Mono Lake Lake Sediment 38.01 -119.01 No Change Davis 1999 NA Siesta Lake Lake Sediment 37.85 -119.66 Drier Brunelle and Anderson 2003 NA Swamp Lake Yosemite Lake Sediment 37.95 -119.82 Drier Smith and Anderson 1992 NA Tioga Pass Pond Terrestrial Sediment 37.92 -119.27 No Change Anderson 1990 NA 22 NA 37.086 -119.29 Drier NA Conflict Balsam Meadows Terrestrial Sediment 37.17 -119.5 Drier Davis et al 1985 NA Exchequer Meadow Terrestrial Sediment 37 -119.08 No Change Thompson et al 1993 NA 23 NA 35.473 -116.5 No Change NA Conflict Central Mojave Combined Packrat Middens 35.4 116.5 Wetter Koehler et al 2005 NA Silver Lake Lake Sediment 35.34 -116.11 Drier Kirby et al 2015 NA 24 NA 34.151 -116.85 Drier NA Majority Lower Bear Lake Lake Sediment 34.26 -116.94 Drier Kirby et al 2012 NA Dry Lake Lake Sediment 34.12 -116.83 Drier Bird and Kirby 2006 NA Lucerne Valley Packrat Middens 34.5 -117 No Change King 1976 NA 25 NA 31.151 -115.34 Drier NA Conflict Laguna Seca San Felipe Lake Sediment 31.13 -115.25 Drier Roy et al 2010 NA Sierra San Pedro Martir Packrat Middens 31.14 -115.43 No Change Holmgren et al 2011 NA 26 NA 32.439 -114.08 No Change NA Robust Tinajas Altas Mountains Packrat Middens 32.28 -114.05 No Change Hall et al 1988 NA Wellton Hills Packrat Middens 32.6 -114.12 No Change Thompson et al 1993 NA 27 NA 31.98 -113.18 Wetter NA Robust Eagle Eye Mts Packrat Middens 31.88 -113.17 Wetter McAuliffe and Van Devender 1998 NA Hornaday Mts Packrat Middens 31.98 -113.6 Wetter Hall et al 1988 NA Puerto Blanco Mountains Packrat Middens 31.97 -112.78 Wetter Van Devender 1987 NA 28 NA 32.42 -111.47 Wetter NA Conflict Waterman Mts Packrat Middens 32.4 -111.5 Wetter Anderson and Van Devender 1991 NA Wolcott Peak Packrat Middens 32.45 -111.47 No Change Thompson et al 1993 NA 29 NA 36.282 -112.06 Drier NA Robust Bear Lake Lake Sediment 36.37 -112.15 Drier Weng and Jackson 1999 NA Fracas Lake Lake Sediment 36.63 -112.24 Drier Weng and Jackson 1999 NA Grand Canyon Middens Packrat Middens 36.167 -111.917 Drier Cole 1981 NA 30 NA 31.397 -108.88 No Change NA Conflict Lake Cloverdale Lake Sediment 31.5 -108.83 Drier Krider 1998 NA Peloncillo Mts Packrat Middens 31.31 -108.94 Wetter Holmgren et al 2006 NA 31 NA 31.467 -110.42 Wetter NA Robust Cave of the Bells Speleothem 31.43 -110.47 Wetter Wagner 2006 NA Murray Springs Terrestrial Sediment 31.57 -110.18