A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D....

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A Drought History of A Drought History of Alabama, Georgia and the Alabama, Georgia and the Panhandle of Florida Panhandle of Florida David Emory Stooksbury, Ph.D. David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor State Climatologist – Associate Professor Engineering and Atmospheric Sciences Engineering and Atmospheric Sciences The University of Georgia The University of Georgia [email protected] [email protected] 706-583-0156 706-583-0156

Transcript of A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D....

Page 1: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

A Drought History of A Drought History of Alabama, Georgia and the Alabama, Georgia and the

Panhandle of Florida Panhandle of Florida

David Emory Stooksbury, Ph.D.David Emory Stooksbury, Ph.D.State Climatologist – Associate ProfessorState Climatologist – Associate ProfessorEngineering and Atmospheric SciencesEngineering and Atmospheric Sciences

The University of GeorgiaThe University of Georgia

[email protected]@engr.uga.edu706-583-0156706-583-0156

Page 2: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Drought in the SoutheastDrought in the Southeast

Page 3: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Drought in the SoutheastDrought in the Southeast

Is a normal component of the Is a normal component of the climate systemclimate system

Page 4: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Drought in the SoutheastDrought in the Southeast

Is a normal component of the Is a normal component of the climate systemclimate system

Has occurred in the past and will in Has occurred in the past and will in the futurethe future

Page 5: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Drought in the SoutheastDrought in the Southeast

Is a normal component of the Is a normal component of the climate systemclimate system

Has occurred in the past and will in Has occurred in the past and will in the futurethe future

No evidence of change in drought No evidence of change in drought frequency or intensityfrequency or intensity

Page 6: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Drought in the SoutheastDrought in the Southeast

Is a normal component of the climate Is a normal component of the climate systemsystem

Has occurred in the past and will in the Has occurred in the past and will in the futurefuture

No evidence of change in drought No evidence of change in drought frequency or intensityfrequency or intensity At least from a climatic viewAt least from a climatic view

Page 7: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Drought in the SoutheastDrought in the Southeast

Is a normal component of the climate systemIs a normal component of the climate system

Has occurred in the past and will in the futureHas occurred in the past and will in the future

No evidence of change in drought frequency No evidence of change in drought frequency or intensityor intensity

Societal Changes change our vulnerability to Societal Changes change our vulnerability to drought – both increasing and decreasing our drought – both increasing and decreasing our vulnerabilityvulnerability

Page 8: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Page 9: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II

Page 10: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II Accelerated growth since 1980Accelerated growth since 1980

Page 11: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II Accelerated growth since 1980Accelerated growth since 1980

1960 – Metro Atlanta about 1,000,0001960 – Metro Atlanta about 1,000,000

Page 12: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II Accelerated growth since 1980Accelerated growth since 1980

1960 – Metro Atlanta about 1 million1960 – Metro Atlanta about 1 million 1960 – State of Georgia about 4.5 million1960 – State of Georgia about 4.5 million

Page 13: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II Accelerated growth since 1980Accelerated growth since 1980

1960 – Metro Atlanta about 1 million1960 – Metro Atlanta about 1 million 1960 – State of Georgia about 4.5 million1960 – State of Georgia about 4.5 million

2008 – Metro Atlanta over 4.5 million2008 – Metro Atlanta over 4.5 million

Page 14: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II Accelerated growth since 1980Accelerated growth since 1980

1960 – Metro Atlanta about 1 million1960 – Metro Atlanta about 1 million 1960 – State of Georgia about 4.5 million1960 – State of Georgia about 4.5 million

2009 – Metro Atlanta over 4.5 million2009 – Metro Atlanta over 4.5 million 2009 – State of Georgia over 9 million2009 – State of Georgia over 9 million

Page 15: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II Accelerated growth since 1980Accelerated growth since 1980 Growth has be unevenly distributedGrowth has be unevenly distributed

Page 16: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II Accelerated growth since 1980Accelerated growth since 1980 Growth has be unevenly distributedGrowth has be unevenly distributed

Along the coast Along the coast Northern Piedmont – top of the water shedNorthern Piedmont – top of the water shed

Page 17: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II

Landscape changes Landscape changes

Page 18: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II

Landscape changes Landscape changes Urban sprawl – changes in the watershed Urban sprawl – changes in the watershed

flow patternsflow patterns

Page 19: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II

Landscape changes Landscape changes Urban sprawl – changes in the watershed Urban sprawl – changes in the watershed

flow patternsflow patterns Conversion of row crop fields to forest Conversion of row crop fields to forest

(started in 1920s)(started in 1920s)

Page 20: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II

Landscape changes Landscape changes

Agricultural ChangesAgricultural Changes

Page 21: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II

Landscape changes Landscape changes

Agricultural ChangesAgricultural Changes Shift in amount in land in row crops and Shift in amount in land in row crops and

treestrees

Page 22: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II

Landscape changes Landscape changes

Agricultural ChangesAgricultural Changes Shift in amount in land in row crops and Shift in amount in land in row crops and

treestrees Increase in irrigationIncrease in irrigation

Page 23: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Societal Changes in the Societal Changes in the SoutheastSoutheast

Rapid population growth starting after Rapid population growth starting after World War IIWorld War II

Landscape changes Landscape changes

Agricultural ChangesAgricultural Changes Shift in amount in land in row crops and treesShift in amount in land in row crops and trees Increase in irrigationIncrease in irrigation Increase in urban agriculture – the “green” Increase in urban agriculture – the “green”

industryindustry

Page 24: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Climate Trends Across the Climate Trends Across the SoutheastSoutheast

Page 25: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Climate Trends Across the Climate Trends Across the SoutheastSoutheast

Since 1900 – No trend in yearly Since 1900 – No trend in yearly precipitationprecipitation

Since 1900 – No trend to slight Since 1900 – No trend to slight cooling in yearly average cooling in yearly average temperaturestemperatures

Page 26: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

The DriversThe Drivers

Location, Location, LocationLocation, Location, Location

El NiEl Niño and La Nio and La Niñaa

Page 27: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Coupled Air-Sea Coupled Air-Sea InteractionsInteractionsThe El Nino/La Nina cycle is the

predominant mode of year to year climate variability.

“The CPC seasonal forecasts lack useful skill in the absence of a strong El Niño/La Niña event” - Bob Livezey

Page 28: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Tracking Tracking the El Niño /La Niña Cycle

• Sea surface temperature anomalies averaged over the Nino 3.4 portion of the equatorial Pacific Ocean

•Smoothed with a three-month running average to reduce noise

Page 29: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Winter Jet Stream Patterns Winter Jet Stream Patterns During During

El Niño and La NiñaEl Niño and La NiñaEl NiñoEl Niño La NiñaLa Niña

Page 30: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

El Niño Effects on El Niño Effects on PrecipitationPrecipitation

Page 31: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

La Niña Effects on La Niña Effects on PrecipitationPrecipitation

Page 32: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Alabama DroughtsAlabama Droughts

Page 33: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Georgia DroughtsGeorgia Droughts

Page 34: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.
Page 35: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Annual North Central Annual North Central GeorgiaGeorgia

Page 36: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Annual West Central Annual West Central GeorgiaGeorgia

Page 37: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Annual Alabama Piedmont Annual Alabama Piedmont PlateauPlateau

Page 38: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Annual Southwest GeorgiaAnnual Southwest Georgia

Page 39: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Annual Coastal Plain Annual Coastal Plain AlabamaAlabama

Page 40: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Annual Northwest FloridaAnnual Northwest Florida

Page 41: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

The Seasonal The Seasonal Distribution is Distribution is IMPORTANT IMPORTANT

Page 42: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Typical Recharge in North Typical Recharge in North GeorgiaGeorgia

- Courtesy SERFC

Page 43: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Response of Hydrologic Response of Hydrologic SystemsSystems

Apalachicola River at Chattahoochee, Florida

Page 44: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

ENSO and Flow RatesENSO and Flow RatesApalachicola River at

Chattahoochee, Florida

Page 45: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Rainfall By SeasonsRainfall By Seasons

Page 46: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Winter North Central Winter North Central GeorgiaGeorgia

Page 47: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Spring North Central Spring North Central GeorgiaGeorgia

Page 48: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Summer North Central Summer North Central GeorgiaGeorgia

Page 49: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Fall North Central GeorgiaFall North Central Georgia

Page 50: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Winter West Central Winter West Central GeorgiaGeorgia

Page 51: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Spring West Central Spring West Central GeorgiaGeorgia

Page 52: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Summer West Central Summer West Central GeorgiaGeorgia

Page 53: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Fall West Central GeorgiaFall West Central Georgia

Page 54: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Winter Piedmont Plateau Winter Piedmont Plateau AlabamaAlabama

Page 55: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Spring Piedmont Plateau Spring Piedmont Plateau AlabamaAlabama

Page 56: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Summer Piedmont Plateau Summer Piedmont Plateau AlabamaAlabama

Page 57: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Fall Piedmont Plateau Fall Piedmont Plateau AlabamaAlabama

Page 58: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Winter Southwest GeorgiaWinter Southwest Georgia

Page 59: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Spring Southwest GeorgiaSpring Southwest Georgia

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Summer Southwest GeorgiaSummer Southwest Georgia

Page 61: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Fall Southwest GeorgiaFall Southwest Georgia

Page 62: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Winter Coastal Plain Winter Coastal Plain AlabamaAlabama

Page 63: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Spring Coastal Plain Spring Coastal Plain AlabamaAlabama

Page 64: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Summer Coastal Plain Summer Coastal Plain AlabamaAlabama

Page 65: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Fall Coastal Plain AlabamaFall Coastal Plain Alabama

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Winter Northwest FloridaWinter Northwest Florida

Page 67: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Spring Northwest FloridaSpring Northwest Florida

Page 68: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Summer Northwest FloridaSummer Northwest Florida

Page 69: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Fall Northwest FloridaFall Northwest Florida

Page 70: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Tree Ring Drought Tree Ring Drought InformationInformation

Long-term Droughts (3 or more years PDI Long-term Droughts (3 or more years PDI < -0.99)< -0.99) 1756-17601756-1760 1762-17641762-1764 1797-18021797-1802 1855-18571855-1857 1896-18991896-1899 1925-19271925-1927 1954-19561954-1956 1998-20021998-2002 2006-20092006-2009

Page 71: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Tree Ring Drought Tree Ring Drought InformationInformation

Long-term Droughts (3 or more years PDI < Long-term Droughts (3 or more years PDI < -0.99)-0.99) 1756-17601756-1760 1762-17641762-1764 1797-18021797-1802 1855-18571855-1857 1896-18991896-1899 1925-19271925-1927 1954-19561954-1956 1998-20021998-2002 2006-20092006-2009

Long-term drought about once in 40 yearsLong-term drought about once in 40 years

Page 72: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Tree Ring Drought Tree Ring Drought InformationInformation

Long-term Droughts Long-term Droughts (2 or more years PDI (2 or more years PDI < -0.99)< -0.99)1756-17601756-1760 1762-17641762-1764 1797-18021797-18021855-18571855-1857 1896-18991896-1899 1925-19271925-19271954-19561954-1956 1998-20021998-2002 2006-20092006-2009

Adds the following yearsAdds the following years 1708-17091708-1709 1714-17151714-1715 1839-18401839-1840 1844-18451844-1845 1914-19151914-1915

Page 73: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Tree Ring Drought Tree Ring Drought InformationInformation

Long-term Droughts Long-term Droughts (2 or more years)(2 or more years)1756-17601756-1760 1762-17641762-1764 1797-18021797-18021855-18571855-1857 1896-18991896-1899 1925-19271925-19271954-19561954-1956 1998-20021998-2002 2006-20092006-2009

Adds the following yearsAdds the following years1708-17091708-1709 1714-17151714-1715 1839-18401839-18401844-18451844-1845 1914-19151914-1915

Return interval is now once in 25 Return interval is now once in 25 yearsyears

Page 74: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Some Drought Some Drought Monitoring ToolsMonitoring Tools

Page 75: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

US Drought MonitorUS Drought Monitor

Page 76: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Lawn and Garden IndexLawn and Garden Index

Page 77: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

Summer Drought and Moistness Index Summer Drought and Moistness Index Alabama 900-2009Alabama 900-2009

-6

-4

-2

0

2

4

6

900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

15422007

9th Driest

Page 78: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

SummarySummary

Page 79: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

SummarySummary

Droughts are a normal component of Droughts are a normal component of the climate systemthe climate system

Page 80: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

SummarySummary

Droughts are a normal component of Droughts are a normal component of the climate systemthe climate system

We will have droughts in the futureWe will have droughts in the future

Page 81: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

SummarySummary

Droughts are a normal component of Droughts are a normal component of the climate systemthe climate system

We will have droughts in the futureWe will have droughts in the future

No trend in southeastern climate No trend in southeastern climate since 1900since 1900

Page 82: A Drought History of Alabama, Georgia and the Panhandle of Florida David Emory Stooksbury, Ph.D. State Climatologist – Associate Professor Engineering.

SummarySummary Droughts are a normal component of the Droughts are a normal component of the

climate systemclimate system

We will have droughts in the futureWe will have droughts in the future

No trend in southeastern climate since No trend in southeastern climate since 19001900

More people but the same amount of More people but the same amount of waterwater