david emory stooksbury, ph.d. state climatologist engineering and atmospheric sciences
DESCRIPTION
ENSO and Chill Hours in Georgia Peaches; Some Initial Results CLIMATE PREDICTION APPLICATIONS SCIENCE WORKSHOP 9-10 March 2004, Florida State University. David Emory Stooksbury, Ph.D. State Climatologist Engineering and Atmospheric Sciences The University of Georgia [email protected] - PowerPoint PPT PresentationTRANSCRIPT
ENSO and Chill Hours in ENSO and Chill Hours in Georgia Peaches; Some Initial Georgia Peaches; Some Initial
Results Results
CLIMATE PREDICTION APPLICATIONS SCIENCE WORKSHOPCLIMATE PREDICTION APPLICATIONS SCIENCE WORKSHOP9-10 March 2004, Florida State University9-10 March 2004, Florida State University
David Emory Stooksbury, Ph.D.David Emory Stooksbury, Ph.D.State ClimatologistState Climatologist
Engineering and Atmospheric SciencesEngineering and Atmospheric SciencesThe University of GeorgiaThe University of Georgia
[email protected]@engr.uga.edu706/583-0156706/583-0156
What does this mean for What does this mean for Peaches?Peaches?
• Do different ENSO patterns impact Do different ENSO patterns impact the the date at which critical chill hours date at which critical chill hours are are reached (number of hours below reached (number of hours below
45 F)?45 F)?
• Is there an increased risk of freeze Is there an increased risk of freeze damage associated with different damage associated with different ENSO ENSO patterns?patterns?
Day of Year: Last 28 F (Spring), 600 CH, 800 CH, 1000 CH at Atlanta, Georgia 1948-1993
-40
-20
0
20
40
60
80
100
45 50 55 60 65 70 75 80 85 90 95
Year
Day o
f Y
ear ATL 28 F DOY
ATL 600 CH DOY
ATL 800 CH DOY
ATL 1000 CH DOY
Day of Year: Last 28 F (Spring), 600 CH, 800 CH, 1000 CH at Macon, Georgia 1948-1993
-20
0
20
40
60
80
100
120
140
45 50 55 60 65 70 75 80 85 90 95
Year
Day o
f Y
ear MCN 28 F DOY
MCN 600 CH DOY
MCN 800 CH DOY
MCN 1000 CH DOY
Day of Year: Last 28 F (Spring), 600 CH, 800 CH, 1000 CH at Auguasta, Georgia 1948-1993
-20
0
20
40
60
80
100
120
140
45 50 55 60 65 70 75 80 85 90 95
Year
Day o
f Y
ear AGS 28 F DOY
AGS 600 CH DOY
AGS 800 CH DOY
AGS 1000 CH DOY
Day of Year: Last 28 F (Spring), 600 CH, 800 CH, 1000 CH at Savannah, Georgia 1948-1993
0
20
40
60
80
100
120
140
45 50 55 60 65 70 75 80 85 90 95
Year
Day o
f Y
ear SAV 28 F DOY
SAV 600 CH DOY
SAV 800 CH DOY
SAV 1000 CH DOY
Last Spring 28F and 600-800-1000 Chill Hours for La Nina, Neutral, El Nino Climate Patterns for Atlanta, GA
0
10
20
30
40
50
60
70
80
1 2 3 4
Last 28F, La Nina, Neutral, El Nino
Day o
f Y
ear
Last Spring 28F and 600-800-1000 Chill Hours for La Nina, Neutral, and El Nino Climate Patterns for Macon, GA
0
10
20
30
40
50
60
70
80
90
1 2 3 4
Last 28F, La Nina, Neutral, El Nino
Day o
f Y
ear
Last Spring 28F and 600-800-1000 Chill Hours for La Nina, Neutral, El Nino Climate Patterns for Augusta, GA
0
10
20
30
40
50
60
70
80
1 2 3 4
Last 28F, La Nina, Neutral, El Nino
Day o
f Y
ear
Last Spring 28F and 600-800-1000 Chill Hours forLa Nina, Neutral, El Nino Climate Patterns for Savannah, GA
0
20
40
60
80
100
120
1 2 3 4
Last 28F, La Nina, Neutral, El Nino
Day o
f Y
ear
ConclusionsConclusions
• There has been no trend in the date There has been no trend in the date at which critical chill hours are at which critical chill hours are reachedreached
• There is no trend in the date of the There is no trend in the date of the last 28F in the springlast 28F in the spring
ENSO ConclusionsENSO Conclusions
• The Winter Climate Pattern Determines When Critical The Winter Climate Pattern Determines When Critical Chill Hours are ReachedChill Hours are Reached
• Chill Hours are Reached Earlier during Neutral and El Chill Hours are Reached Earlier during Neutral and El Nino Climate Pattern WintersNino Climate Pattern Winters
• No relationship between ENSO and Date of the Last 28FNo relationship between ENSO and Date of the Last 28F
• Increased Risk of Late Freeze Increased Risk of Late Freeze Damage during Neutral and El Nino Damage during Neutral and El Nino Climate Pattern WintersClimate Pattern Winters