# North American Hydroclimate Synthesis (NAHS) from multi-proxy hydroclimate records over the Common Era #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # 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/24910 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/rodysill2018/rodysill2018-bacon.txt # Description: NOAA location of the template # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/rodysill2018/rodysill2018-RecordsUsed_Metadata.txt # Description: NOAA location of the Records Used metadata template # # Archive: Climate Reconstructions # # Dataset_DOI: # # Parameter_Keywords: precipitation #--------------------------------------- # Contribution_Date # Date: 2018-08-17 #--------------------------------------- # File_Last_Modified_Date # Date: 2018-08-17 #--------------------------------------- # Title # Study_Name: North American Hydroclimate Synthesis (NAHS) from multi-proxy hydroclimate records over the Common Era #--------------------------------------- # Investigators # Investigators: Rodysill, Jessica R.; Anderson, Lesleigh; Cronin, Thomas M.; Jones, Miriam C.; Thompson, Robert S.; Wahl, David B.; Willard, Debra A.; Addison, Jason A.; Alder, Jay R.; Anderson, Katherine H.; Anderson, Lysanna; Barron, John A.; Bernhardt, Christopher E.; Hostetler, Steven W.; Kehrwald, Natalie M.; Khan, Nicole S.; Richey, Julie N.; Starratt, Scott W.; Strickland, Laura E.; Toomey, Michael R.; Treat, Claire C.; Wingard, G. Lynn #--------------------------------------- # Description_Notes_and_Keywords # Description: North American multi-proxy hydroclimate records are synthesized with new chronologies. Hydroclimate reconstructions document clear regional trends during the Common Era. Regionally asynchronous spatial variability occurred at centennial timescales. Widespread North American drought coincided with warm N. Hemisphere temperatures. Wet and dry climates occurred during both warm and cool climates. # Provided Keywords: precipitation, ground water, lake level, salinity, vegetation, lake salinity #--------------------------------------- # Publication # Authors: Rodysill, Jessica R.; Anderson, Lesleigh; Cronin, Thomas M.; Jones, Miriam C.; Thompson, Robert S.; Wahl, David B.; Willard, Debra A.; Addison, Jason A.; Alder, Jay R.; Anderson, Katherine H.; Anderson, Lysanna; Barron, John A.; Bernhardt, Christopher E.; Hostetler, Steven W.; Kehrwald, Natalie M.; Khan, Nicole S.; Richey, Julie N.; Starratt, Scott W.; Strickland, Laura E.; Toomey, Michael R.; Treat, Claire C.; Wingard, G. Lynn # Published_Date_or_Year: 2018 # Published_Title: A North American Hydroclimate Synthesis (NAHS) of the Common Era # Journal_Name: Global and Planetary Change # Volume: 162 # Edition: # Issue: # Pages: 175-198 # Report_Number: # DOI: 10.1016/j.gloplacha.2017.12.025 # Online_Resource: www.sciencedirect.com/science/article/pii/S0921818117304174 # Full_Citation: # Abstract: This study presents a synthesis of century-scale hydroclimate variations in North America for the Common Era (last 2000 years) using new age models of previously published multiple proxy-based paleoclimate data. This North American Hydroclimate Synthesis (NAHS) examines regional hydroclimate patterns and related environmental indicators, including vegetation, lake water elevation, stream flow and runoff, cave drip rates, biological productivity, assemblages of living organisms, and salinity. Centennial-scale hydroclimate anomalies are obtained by iteratively sampling the proxy data on each of thousands of age model realizations and determining the fractions of possible time series indicating that the century-smoothed data was anomalously wet or dry relative to the 100 BCE to 1900 CE mean. Results suggest regionally asynchronous wet and dry periods over multidecadal to centennial timescales and frequent periods of extended regional drought. Most sites indicate drying during previously documented multicentennial periods of warmer Northern Hemisphere temperatures, particularly in the western U.S., central U.S., and Canada. Two widespread droughts were documented by the NAHS: from 50 BCE to 450 CE and from 800 to 1100 CE. Major hydroclimate reorganizations occurred out of sync with Northern Hemisphere temperature variations and widespread wet and dry anomalies occurred during both warm and cool periods. We present a broad assessment of paleoclimate relationships that highlights the potential influences of internal variability and external forcing and supports a prominent role for Pacific and Atlantic Ocean dynamics on century-scale continental hydroclimate. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: U.S. Geological Survey Climate and Land Use Change Research and Development Program # Grant: #--------------------------------------- # Site_Information # Site_Name: North America NAHS # Location: North America # Country: United States, Canada, Mexico # Northernmost_Latitude: 74.89164 # Southernmost_Latitude: 17.4 # Easternmost_Longitude: -63.5392 # Westernmost_Longitude: -159.4316 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: NAHS Bacon Params Rodysill2018 # First_Year: # Last_Year: # Time_Unit: # 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) ## data_source sample identification,,,,,,,,C,data source identification ## acc.shape notes,,,,,,,,N,Bacon V 2.2 input parameter ## acc.mean notes,,,,,,,,N,Bacon V 2.2 input parameter ## mem.strength notes,,,,,,,,N,Bacon V 2.2 input parameter ## mem.mean notes,,,,,,,,N,Bacon V 2.2 input parameter ## thick notes,,,,,,,,N,Bacon V 2.2 input parameter ## #sections notes,,,,,,,,N,Bacon V 2.2 input parameter ## hiatus.depths notes,,,,,,,,N,Bacon V 2.2 input parameter ## hiatus.mean notes,,,,,,,,N,Bacon V 2.2 input parameter ## h.shape notes,,,,,,,,N,Bacon V 2.2 input parameter ## d.R notes,,,,,,,,N,Bacon V 2.2 input parameter ## d.STD notes,,,,,,,,N,Bacon V 2.2 input parameter ## #agemodels notes,,,,,,,,N,Total number of age model iterations exported from Bacon V 2.2 #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NA data_source acc.shape acc.mean mem.strength mem.mean thick #sections hiatus.depths hiatus.mean h.shape d.R d.STD #agemodels 1-AguadaXcaamal 1.5 10 4 0.7 5 83 NA NA NA NA NA 7033 2-Baie 1.5 10 4 0.7 5 92 NA NA NA NA NA 5005 3-BearLake 1.5 20 4 0.7 2 128 NA NA NA NA NA 6948 4-BlueLake 1.5 50 4 0.7 5 88 NA NA NA NA NA 1000 5-BuckeyeCreekCave 1.5 500 4 0.7 0.2 101 NA NA NA NA NA 5737 6-CastorLime[Castor Lake] 1.5 20 4 0.7 5 78 NA NA NA NA NA 3196 6-CastorLime[Lime Lake] 1.5 20 4 0.7 5 62 NA NA NA NA NA - 7-ChesapeakeBay_MD03-2661 1.5 5 4 0.7 20 81 NA NA NA NA NA 5799 8-ChesapeakeBay_MD99-2209 1.5 5 4 0.7 5 157 NA NA NA NA NA 9889 9-ClelandLake 1.5 20 4 0.7 5 50 NA NA NA NA NA 1777 10-ColdwaterLake 1.5 5 4 0.7 5 132 NA NA NA NA NA 9431 11-CrystalCave 1.5 100 4 0.7 1 32 NA NA NA NA NA 6732 12-DavisPond 1.5 10 4 0.7 5 36 NA NA NA NA NA 5912 13-DeepPond 1.5 20 4 0.7 1.5 79 NA NA NA NA NA 4237 14-DixieLake 1.5 20 4 0.7 1 118 NA NA NA NA NA 8998 15-DuneLake 1.5 20 4 0.7 5 110 NA NA NA NA NA 1596 16-EastLake NA NA NA NA NA NA NA NA NA NA NA 1000 17-ELALake239 1.5 50 4 0.7 0.5 81 NA NA NA NA NA 8192 18-ELALake442 1.5 20 4 0.7 2 95 NA NA NA NA NA 7107 19-ElkLake NA NA NA NA NA NA NA NA NA NA NA 1000 20-FoyLake NA NA NA NA NA NA NA NA NA NA NA 1000 21-FoyLake NA NA NA NA NA NA NA NA NA NA NA 1000 22-GallLake 1.5 50 4 0.7 1 87 NA NA NA NA NA 8100 23-GreatHeath 2 10 4 0.7 5 100 NA NA NA NA NA 4165 24-GreatSaltLake 1.5 20 4 0.7 5 133 NA NA NA NA NA 4083 25-HiddenLake 1.5 50 4 0.7 0.5 77 NA NA NA NA NA 6196 26-HobartLake 1.5 5 4 0.7 7 162 NA NA NA NA NA 5964 27-HorsetrailFen 1.5 20 4 0.7 5 85 NA NA NA NA NA 4088 28-IrwinSmithBog 1.5 50 4 0.7 5 45 57 500 1 NA NA 2973 29-JenningsCave 1.5 20 4 0.7 2 53 NA NA NA NA NA 5574 30-JuxtlahuacaCave 1.5 20 4 0.7 5 22 NA NA NA NA NA 2146 31-KecheLake 1.5 20 4 0.7 5 54 NA NA NA NA NA 3274 32-KirmanLake 1.5 60 4 0.5 5 52 NA NA NA NA NA 3292 33-KiteLake 1.5 20 4 0.7 5 137 NA NA NA NA NA 4524 34-LacLeCaron 1.5 20 4 0.7 1 106 NA NA NA NA NA 7121 35-LagunadeAljojuca 1.5 5 10 0.7 50 24 NA NA NA NA NA 2100 36-LagunadeJuanacatlan 1.5 10 4 0.7 5 145 NA NA NA NA NA 4068 37-LakeChichancanab 1.5 10 4 0.7 5 52 NA NA NA NA NA 6826 38-LakeElsinore 1.5 10 4 0.7 5 215 NA NA NA NA NA 4115 39-LakeoftheWoods 1.5 50 4 0.7 1 34 NA NA NA NA NA 5386 40-Lebel 1.5 10 4 0.7 5 116 NA NA NA NA NA 3767 41-LittleRaleighLake 1.5 20 4 0.7 1 109 NA NA NA NA NA 7633 42-LowerBearLake 1.5 20 4 0.7 5 76 NA NA NA NA NA 2669 43-MarcellaJelly 1.5 20 4 0.7 5 27 NA NA NA NA NA 5431 44-MartinLake 1.5 10 4 0.7 5 115 NA NA NA NA NA 5592 45-MB01 1.5 50 4 0.7 0.5 101 NA NA NA NA NA 5241 46-MeekinLake 1.5 20 4 0.7 2 96 NA NA NA NA NA 7046 47-MindenBog 1.5 20 4 0.7 5 37 NA NA NA NA NA 4987 48-Mono Lake NA NA NA NA NA NA NA NA NA NA NA - 49-MoonLake 1.5 10 4 0.7 5 92.5 NA NA NA NA NA 8441 50-Morts 1.5 10 4 0.7 5 58 NA NA NA NA NA 3272 51-NewLongPond 1.5 50 4 0.7 1 62 NA NA NA NA NA 6222 52-OngokeLake 1.5 10 4 0.7 5 43 NA NA NA NA NA 6363 53-OregonCaves 1.5 500 4 0.7 0.2 76 10.8 1500 1 NA NA 4908 54-ParadiseLake 1.5 50 4 0.7 5 59 NA NA NA NA NA 2308 55-PathLake 1.5 20 4 0.7 5 81 NA NA NA NA NA 5180 56-Plaine 1.5 20 4 0.7 5 72 NA NA NA NA NA 2264 57-PuntaLaguna 1.5 5 4 0.7 5 99 NA NA NA NA NA 8183 58-RiceLake 1.5 5 4 0.7 5 114 NA NA NA NA NA 9823 59-RoeIsland 1.5 10 4 0.7 5 70 NA NA NA NA NA 8358 60-SchellingsBogSB70 1.5 5 4 0.7 5 201 NA NA NA NA NA 10092 61-Site4 1.5 20 4 0.7 1 62 NA NA NA NA NA 6493 62-SouthBay 1.5 10 4 0.7 5 71 NA NA NA 323 52 8434 63-SteelLake NA NA NA NA NA NA NA NA NA NA NA 1000 64-Sugluk 1.5 10 4 0.7 5 37 NA NA NA NA NA 4154 65-UpperPinto 1.5 20 4 0.7 5 78 NA NA NA NA NA 3584 66-WalkerLake 1.5 5 4 0.7 4 114 NA NA NA NA NA 6461 67-WolverineLake 1.5 50 4 0.7 1 111 NA NA NA NA NA 5568 68-YellowBison 1.5 50 4 0.7 1 63 NA NA NA NA NA 6602 69-ZacaLake 1.5 5 4 0.7 5 169 NA NA NA NA NA 8033