PerformanceImprovement Council

PerformanceImprovement Council

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PerformanceImprovement Council

PerformanceImprovement Council

Earth System Science

Land

Ocean

Atmosphere

Ice

Changing Planet

What makes a community meaningfully similar or different is not just its landscape, but also its people.

Holiday Season in Puerto Rico

The Solution: Combine daytime and nighttime measurements…

…with well-established physical principles.

less equal more

Holiday Lighting

Richmond

Portsmouth

RaleighGreensboro

Charlotte

Greenville

Baltimore – WashingtonMetro Area

Carolina

Ponce

CaguasGuaynabo

AreciboToa Baja MayagüezTrujillo Alto

Toa AltaAguadillaVega BajaHumacao

Río GrandeCabo Rojo

Naranjito Cayey CanóvanasIsabela

Aguas Buenas

San Juan

Bayamón

ManatíCidra

San SebastiánYaucoAguadaHatillo

San LorenzoBarranquitas0.0E+00

1.0E+03

2.0E+03

3.0E+03

4.0E+03

5.0E+03

6.0E+03

20,000 200,000

Hol

iday

Lig

htin

g D

eman

d (M

W p

er h

our)

Population (US Census, 2010)

More

Nig

htt

ime L

igh

ts

More People

Holiday Season in Puerto Rico

Magnitude of lighting demand

Large-to-Medium sized cities

Small towns

Carolina

Ponce

Caguas

Guaynabo

Arecibo

Toa Baja

Mayagüez

Trujillo Alto

Toa Alta

AguadillaVega Baja

Humacao

Río GrandeCabo Rojo

Naranjito

Cayey

Canóvanas

IsabelaAguas Buenas

San Juan

Bayamón

Manatí

Cidra

San Sebastián

Yauco

Aguada

Hatillo

San Lorenzo

Barranquitas

1.20

1.25

1.30

1.35

1.40

20,000 200,000

Hol

iday

incr

ease

in L

ight

Out

put

(%)

Population (US Census, 2010)

Large suburbs & exurban areas

Central urban districts

Cultural Centers

Magnitude of holiday lighting demandM

ore

Ch

ristm

as L

igh

ts

More People

Holiday Season in Puerto Rico

Countryside towns

The Holy Month of Ramadan

2012 2013 2014

Jeddah, Saudi Arabia

2012 2013 2014

Tel Aviv, Israel

Cairo

2012 2013 2014

Cairo, Egypt

Cairo District, Sharqiya District, and Assiut District

Basrah, Iraq

Aleppo, Syria

Pres

Why is it important ?

Sustainable energy for all.

Individual Neighborhood

Global

+ Innovative research that made ours possible:

• Miller and Turner (2009), A Dynamic Lunar Spectral Irradiance Data Set for VIIRS DNB Nighttime Environmental Applications, IEEE-TGRS.

• Zhang et al., (2013), The Vegetation Adjusted NTL Urban Index: A new approach to reduce saturation and increase variation in nighttime luminosity, RSE.

• Johnson, et al., (2013), Preliminary investigations toward nighttime aerosol optical depth retrievals from the VIIRS DNB, AMTD.

• Walther, et al., (2013), The Expected Performance of Cloud Optical and Microphysical Properties derived from Suomi NPP VIIRS DNB Lunar Reflectance, JGR-Atmospheres.

• Cao and Bai (2014), Quantitative Analysis of VIIRS DNB Nightlight Point Source for Light Power Estimation and Stability Monitoring, Remote Sensing.

Thanks to NASA’s SIF Fund. For more info:

• Román and Stokes (2015). Holidays in lights: Tracking cultural patterns in demand for energy services. AGU Earth's Future Journal [Accepted].