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D e b o r a h B a t h k e N a t i o n a l D r o u g h t M i t i g a t i o n C e n t e r • S c h o o l o f N a t u r a l R e s o u r c e sU n i v e r s i t y o f N e b r a s k a - L i n c o l nC l i m a t e & We a t h e r I n f o r m a t i o n f o r N e w E n g l a n d W a t e r U t i l i t i e s & S t o r m w a t e r M a n a g e r sJ u l y 1 6 , 2 0 2 0G o o g l e M e e t
The U.S. Drought Monitor
Help build drought resilience by providing usable, actionable, and policy informing tools and products.
NATIONAL DROUGHT MITIGATION CENTER
Increases ability to cope
Planning
Translates science
Education & OutreachMonitoring
Provides the foundation
Takeaway #1
The map synthesizes a lot of information.
droughtmonitor.unl.edu
Map colors indicate drought intensity
NATIONAL DROUGHT MITIGATION CENTER
None
D0 Abnormally DryNot Drought
D4 Exceptional Drought
D1 Moderate DroughtD2 Severe Drought
D3 Extreme DroughtDrought
NATIONAL DROUGHT MITIGATION CENTER
Intensity is based on historical likelihoodMost
Least
100 years of ranked data
None 31-100
D0 Abnormallydry 21-30
D1 Moderate drought 11 - 20
D2 Severedrought 6 - 10
D3 Extreme drought 3 - 5
D4 Exceptionaldrought 1 - 2
Percentile
Map incorporates multiple types of data
Precipitation
Soil Moisture
Vegetation Health
Evaporation
Ground Water
Impacts
Surface Water
Length evaluated by examining a range of timescales
Monthly Seasonal Inter-annual
NATIONAL DROUGHT MITIGATION CENTER
Map depicts short- and long-term conditions
NATIONAL DROUGHT MITIGATION CENTER
S = short termtypically < 6 months
L = long term, typically > 6 months
separates drought timescales
Map results from a convergence of evidence
NATIONAL DROUGHT MITIGATION CENTER
Objective Data
Subjective Expertise
Takeaway #2: The map is a partnership.
NATIONAL DROUGHT MITIGATION CENTER
Authors interpret data & involve local experts in discussionNATIONAL DROUGHT MITIGATION CENTER
Local ExpertsUSDM Authors
droughtreporter.unl.edu
The public reports impacts to provide information on the effects of drought
NATIONAL DROUGHT MITIGATION CENTER
cocorahs.org
DRAFTMAPS
Local experts
NATIONAL DROUGHT MITIGATION CENTER
Objectivedata Author
Impact reports
FINAL MAP RELEASED THURSDAY
USDMConvergence of Evidence
Providing Input into the USDM
cocorahs.org Droughtimpacts.unl.eduLOCAL CONTACTS
• Join the USDM listserv• Contact the NERCC
NATIONAL DROUGHT MITIGATION CENTER
Takeway #3
It’s more than just a map
NATIONAL DROUGHT MITIGATION CENTER
https://droughtmonitor.unl.edu
Deborah [email protected]