Climate Change Impacts on Great Lakes Water Levels. Andrew Gronewold, Ph.D., P.E.

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1 Climate Change Impacts on Great Lakes Water Levels Andrew Gronewold, Ph.D., P.E. Great Lakes Environmental Research Laboratory National Oceanic and Atmospheric Administration The Ohio State University Changing Climate Seminar Series May 10, 2011

2 Outline Introduction 1 Introduction

3 Outline Introduction 1 Introduction 2 Water level observations

4 Outline Introduction 1 Introduction 2 Water level observations 3 Water level models

5 Outline Introduction 1 Introduction 2 Water level observations 3 Water level models 4 Water Level forecasts

6 Outline Introduction 1 Introduction 2 Water level observations 3 Water level models 4 Water Level forecasts

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14 Rank Port State Total cargo volume (million tons)

15 Rank Port State Total cargo volume (million tons) 1 South Louisiana LA 213

16 Rank Port State Total cargo volume (million tons) 1 South Louisiana LA Houston TX New York and New Jersey NY/NJ Long Beach CA 73 5 Corpus Christi TX 68 6 New Orleans LA 68 7 Beaumont TX 68 8 Huntington-Tristate OH/KY/WV 59 9 Los Angeles CA Hampton Roads VA 58

17 Rank Port State Total cargo volume (million tons) 1 South Louisiana LA Houston TX New York and New Jersey NY/NJ Long Beach CA 73 5 Corpus Christi TX 68 6 New Orleans LA 68 7 Beaumont TX 68 8 Huntington-Tristate OH/KY/WV 59 9 Los Angeles CA Hampton Roads VA Duluth/Superior MN/WI 30

18 Rank Port State Total cargo volume (million tons) 1 South Louisiana LA Houston TX New York and New Jersey NY/NJ Long Beach CA 73 5 Corpus Christi TX 68 6 New Orleans LA 68 7 Beaumont TX 68 8 Huntington-Tristate OH/KY/WV 59 9 Los Angeles CA Hampton Roads VA Duluth/Superior MN/WI Chicago IL 19 Table: United States busiest ports ranked by gross tonnage for the calendar year 2009.

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21 Name Country Surface area Volume (km 2 ) (mi 2 ) (km 3 ) (mi 3 ) Caspian Sea Multiple 371, ,000 78,200 18,800 Michigan Huron U.S. and Canada 117,702 45,445 8,458 2,029 Superior U.S. and Canada 82,414 31,820 12,100 2,900 Victoria Multiple 69,485 26,828 2, Tanganyika Multiple 32,893 12,700 18,900 4,500 Baikal Russia 31,500 12,200 23, 5,700 Great Bear Lake Canada 31,080 12,000 2, Malawi Multiple 30,044 11, 8,400 2,000 Great Slave Lake Canada 28,930 11,170 2, Erie U.S. and Canada 25,719 9, Winnipeg Canada 23,553 9, Ontario U.S. and Canada 19,477 7,520 1, Table: Water volume and surface areas of the earth s twelve highest surface area continental water bodies.

22 Name Country Surface area Volume (km 2 ) (mi 2 ) (km 3 ) (mi 3 ) Caspian Sea Multiple 371, ,000 78,200 18,800 Michigan Huron U.S. and Canada 117,702 45,445 8,458 2,029 Superior U.S. and Canada 82,414 31,820 12,100 2,900 Victoria Multiple 69,485 26,828 2, Tanganyika Multiple 32,893 12,700 18,900 4,500 Baikal Russia 31,500 12,200 23, 5,700 Great Bear Lake Canada 31,080 12,000 2, Malawi Multiple 30,044 11, 8,400 2,000 Great Slave Lake Canada 28,930 11,170 2, Erie U.S. and Canada 25,719 9, Winnipeg Canada 23,553 9, Ontario U.S. and Canada 19,477 7,520 1, Table: Water volume and surface areas of the earth s twelve highest surface area continental water bodies.

23 : take home messages Introduction

24 Introduction: take home messages Great lakes - largest freshwater resource system in the world

25 Introduction: take home messages Great lakes - largest freshwater resource system in the world Supports significant population and economy

26 Introduction: take home messages Great lakes - largest freshwater resource system in the world Supports significant population and economy Collectively managed and utilized by two nations

27 Introduction: take home messages Great lakes - largest freshwater resource system in the world Supports significant population and economy Collectively managed and utilized by two nations Benchmark for adaptive management and hydroclimate research

28 Outline Introduction Water level observations Climate and meteorological variables 1 Introduction 2 Water level observations 3 Water level models 4 Water Level forecasts

29 Water level observations Climate and meteorological variables

30 Water level observations Climate and meteorological variables

31 Water level observations Climate and meteorological variables

32 Water level observations Climate and meteorological variables

33 Water level observations Climate and meteorological variables

34 Water level observations Climate and meteorological variables Water levels: observations (long-term) 185 Water level (meters, IGLD85) Water level (feet, IGLD85) Year

35 Water level observations Climate and meteorological variables Water levels: observations (long-term) Water level (meters, IGLD85) Lake Superior Water level (feet, IGLD85) Year

36 Water level observations Climate and meteorological variables Water levels: observations (long-term) Water level (meters, IGLD85) Lake Superior Water level (feet, IGLD85) Year

37 Water level observations Climate and meteorological variables Water levels: observations (long-term) Water level (meters, IGLD85) Lake Superior Lake Michigan and Huron Lake Erie Lake Ontario Water level (feet, IGLD85) Year

38 Water level observations Climate and meteorological variables Water levels: observations (long-term) Water level (meters, IGLD85) Lake Superior Lake Michigan and Huron Lake Erie Lake Ontario Water level (feet, IGLD85) Year

39 Water level observations Climate and meteorological variables Water levels: observations (long-term) Water level (meters, IGLD85) Lake Superior Lake Michigan and Huron Lake Erie Lake Ontario Water level (feet, IGLD85) Year

40 Water level observations Climate and meteorological variables Water Levels: observations (short-term)

41 Water level observations Climate and meteorological variables Water Levels: observations (short-term)

42 Water level observations Climate and meteorological variables : take home messages

43 Water level observations Climate and meteorological variables : take home messages Great lakes water levels spatial and temporal scales

44 Water level observations Climate and meteorological variables : take home messages Great lakes water levels spatial and temporal scales Multiple sources of uncertainty and variability

45 Water level observations Climate and meteorological variables : take home messages Great lakes water levels spatial and temporal scales Multiple sources of uncertainty and variability No single factor (natural or non-natural) explains it all

46 Water level observations Climate and meteorological variables : take home messages Great lakes water levels spatial and temporal scales Multiple sources of uncertainty and variability No single factor (natural or non-natural) explains it all Can we relate, reproduce, and predict using models?

47 Water level observations Climate and meteorological variables Great Lakes hydrologic cycle

48 Water level observations Climate and meteorological variables Great Lakes hydrologic cycle

49 Water level observations Climate and meteorological variables Precipitation 185 Water level (meters, IGLD85) Water level (feet, IGLD85) Year

50 Water level observations Climate and meteorological variables Precipitation Water level (meters, IGLD85) Water level (feet, IGLD85) Basin precipitation (mm) Year

51 Water level observations Climate and meteorological variables Precipitation Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie Water level (feet, IGLD85) Basin precipitation (mm) Lake Ontario Year

52 Water level observations Climate and meteorological variables Precipitation Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie Water level (feet, IGLD85) Basin precipitation (mm) Lake Ontario Year

53 Water level observations Climate and meteorological variables Evaporation 185 Water level (meters, IGLD85) Water level (feet, IGLD85) Year

54 Water level observations Climate and meteorological variables Evaporation Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie Water level (feet, IGLD85) Average annual over lake evaporation (mm) Lake Ontario Year

55 Water level observations Climate and meteorological variables Evaporation Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie Water level (feet, IGLD85) Average annual over lake evaporation (mm) Lake Ontario Year

56 Outline Introduction 1 Introduction 2 Water level observations 3 Water level models 4 Water Level forecasts

57 Great Lakes Advanced Hydrologic Prediction System (AHPS) Daily Meteorological Data Daily precipitation, air temperature for over-land stations. Evapotranspiration model input: dew point, wind speed, cloud cover. Thiessen Polygon Software Computes spatial averages of meteorological data for subbasins and over-lakes Over-lake and Subbasin Averages Over-lake averages (air temp, dew point, wind speed, cloud cover). Subbasin and over-lake averages for air temperature and precipitation. Lake Thermodynamics Model Heat storage, water temperature, and evaporation calculated. Large Basin Runoff Model Daily moisture storage and runoff calculated. Over-lake Average Heat storage, water temperature, evaporation. Subbasin Average Daily moisture storage, runoff. Net Basin Supply Calculations NBS = Runoff + Precipitation - Evaporation Lake Routing and Regulation Model Translates net basin supplies to lake levels and connecting channel fl ows. Predicted Water Levels

58 Great Lakes Advanced Hydrologic Prediction System (AHPS) Daily Meteorological Data Daily precipitation, air temperature for over-land stations. Evapotranspiration model input: dew point, wind speed, cloud cover. Thiessen Polygon Software Computes spatial averages of meteorological data for subbasins and over-lakes Over-lake and Subbasin Averages Over-lake averages (air temp, dew point, wind speed, cloud cover). Subbasin and over-lake averages for air temperature and precipitation. Lake Thermodynamics Model Heat storage, water temperature, and evaporation calculated. Large Basin Runoff Model Daily moisture storage and runoff calculated. Over-lake Average Heat storage, water temperature, evaporation. Subbasin Average Daily moisture storage, runoff. Net Basin Supply Calculations NBS = Runoff + Precipitation - Evaporation Lake Routing and Regulation Model Translates net basin supplies to lake levels and connecting channel fl ows. Predicted Water Levels

59 Great Lakes Advanced Hydrologic Prediction System (AHPS) Daily Meteorological Data Daily precipitation, air temperature for over-land stations. Evapotranspiration model input: dew point, wind speed, cloud cover. Thiessen Polygon Software Computes spatial averages of meteorological data for subbasins and over-lakes Over-lake and Subbasin Averages Over-lake averages (air temp, dew point, wind speed, cloud cover). Subbasin and over-lake averages for air temperature and precipitation. Lake Thermodynamics Model Heat storage, water temperature, and evaporation calculated. Large Basin Runoff Model Daily moisture storage and runoff calculated. Over-lake Average Heat storage, water temperature, evaporation. Subbasin Average Daily moisture storage, runoff. Net Basin Supply Calculations NBS = Runoff + Precipitation - Evaporation Lake Routing and Regulation Model Translates net basin supplies to lake levels and connecting channel fl ows. Predicted Water Levels

60 Great Lakes Advanced Hydrologic Prediction System (AHPS) Daily Meteorological Data Daily precipitation, air temperature for over-land stations. Evapotranspiration model input: dew point, wind speed, cloud cover. Thiessen Polygon Software Computes spatial averages of meteorological data for subbasins and over-lakes Over-lake and Subbasin Averages Over-lake averages (air temp, dew point, wind speed, cloud cover). Subbasin and over-lake averages for air temperature and precipitation. Lake Thermodynamics Model Heat storage, water temperature, and evaporation calculated. Large Basin Runoff Model Daily moisture storage and runoff calculated. Over-lake Average Heat storage, water temperature, evaporation. Subbasin Average Daily moisture storage, runoff. Net Basin Supply Calculations NBS = Runoff + Precipitation - Evaporation Lake Routing and Regulation Model Translates net basin supplies to lake levels and connecting channel fl ows. Predicted Water Levels

61 Water level (meters, IGLD85) month forecast 90% prediction interval 3 month forecast 90% prediction interval Observed monthly average water level Lake Superior Lakes Michigan Huron Lake St. Clair Lake Erie

62 Water level (meters, IGLD85) month forecast 90% prediction interval 3 month forecast 90% prediction interval Observed monthly average water level Lake Superior Lakes Michigan Huron Lake St. Clair Lake Erie

63 Water level (meters, IGLD85) month forecast 90% prediction interval 3 month forecast 90% prediction interval Observed monthly average water level Lake Superior Lakes Michigan Huron Lake St. Clair Lake Erie

64 Water level (meters, IGLD85) month forecast 90% prediction interval 3 month forecast 90% prediction interval Observed monthly average water level Lake Superior Lakes Michigan Huron Lake St. Clair Lake Erie

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67 Outline Introduction 1 Introduction 2 Water level observations 3 Water level models 4 Water Level forecasts

68 Climate forecasts Water level (meters, IGLD85) Water level (feet, IGLD85) Basin precipitation (mm) Year

69 Climate forecasts Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie Water level (feet, IGLD85) Basin precipitation (mm) Lake Ontario Year

70 Climate forecasts Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie (from P. Chao, 1999) Geophysical Fluid Dynamics Laboratory Transient Hadley Center Transient Max Planck Institute Transient Canadian Climate Centre Transient Water level (feet, IGLD85) Basin precipitation (mm) Lake Ontario Year

71 Climate forecasts Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie (from P. Chao, 1999) Geophysical Fluid Dynamics Laboratory Transient Hadley Center Transient Max Planck Institute Transient Canadian Climate Centre Transient Water level (feet, IGLD85) Basin precipitation (mm) Lake Ontario Year

72 Climate forecasts Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie (from P. Chao, 1999) Geophysical Fluid Dynamics Laboratory Transient Hadley Center Transient Max Planck Institute Transient Canadian Climate Centre Transient Water level (feet, IGLD85) Basin precipitation (mm) Lake Ontario Year

73 Climate forecasts Lake Superior Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie (from P. Chao, 1999) Geophysical Fluid Dynamics Laboratory Transient Hadley Center Transient Max Planck Institute Transient Canadian Climate Centre Transient Water level (feet, IGLD85) Basin precipitation (mm) Lake Ontario Year

74 Water level forecasts From: Hayhoe, et al., (2010)

75 Water level forecasts Lake Superior (from Hayhoe, et al., 2010) SRES B1 low emissions SRES A1fi high emissions Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie Water level (feet, IGLD85) Lake Ontario Year

76 Water level forecasts Lake Superior (from Hayhoe, et al., 2010) SRES B1 low emissions SRES A1fi high emissions Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie Water level (feet, IGLD85) Lake Ontario Year

77 Water level forecasts Lake Superior (from Hayhoe, et al., 2010) SRES B1 low emissions SRES A1fi high emissions Water level (meters, IGLD85) Lake Michigan and Huron Lake Erie Water level (feet, IGLD85) Lake Ontario Year

78 Water level forecasts From: Angel and Kunkel (2010)

79 Conclusions Introduction

80 Conclusions Properly acknowledge variability and uncertainty in models and put them within the context of short and long term patterns

81 Conclusions Properly acknowledge variability and uncertainty in models and put them within the context of short and long term patterns

82 Conclusions Properly acknowledge variability and uncertainty in models and put them within the context of short and long term patterns others

83 Acknowledgements Introduction

84 Acknowledgements Tim Hunter, Anne Clites, Cathy Darnell, Brent Lofgren and Craig Stow (NOAA GLERL)

85 Acknowledgements Tim Hunter, Anne Clites, Cathy Darnell, Brent Lofgren and Craig Stow (NOAA GLERL) Frank Quinn, Tom Croley

86 Acknowledgements Tim Hunter, Anne Clites, Cathy Darnell, Brent Lofgren and Craig Stow (NOAA GLERL) Frank Quinn, Tom Croley

87 Acknowledgements Tim Hunter, Anne Clites, Cathy Darnell, Brent Lofgren and Craig Stow (NOAA GLERL) Frank Quinn, Tom Croley NOAA, USEPA, and Duke University

88 Climate Change Impacts on Great Lakes Water Levels Andrew Gronewold, Ph.D., P.E. Great Lakes Environmental Research Laboratory National Oceanic and Atmospheric Administration The Ohio State University Changing Climate Seminar Series May 10, 2011

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