• VIIRS L1B Day/Night Band SDR (2012-360) • VIIRS L3 DNB-Corrected Radiance • 7 MW·hr 0 MW·hr VIIRS L3 Daily Total Light Electricity Usage 6.0E+03 San Juan Holiday Lighting Demand (MW per hour) 5.0E+03 4.0E+03 3.0E+03 2.0E+03 Ponce Bayamón Carolina Guaynabo Caguas Arecibo ToaRojo Alta Cabo Toa Baja IsabelaCidra Río Grande Mayagüez Aguadilla Aguas Buenas Trujillo Alto Humacao Canóvanas Naranjito Hatillo Manatí Cayey Vega Baja San Sebastián Yauco Aguada San Lorenzo 0.0E+00 Barranquitas 20,000 200,000 Population (US Census, 2010) 1.0E+03 1.40 Cidra Holiday increase in Light Output (%) Naranjito Bayamón Toa Alta 1.35 Toa Baja Isabela 1.30 Trujillo Alto San Lorenzo Aguas Buenas Barranquitas Canóvanas Aguada Caguas Guaynabo Cabo RojoArecibo Río Grande Cayey Aguadilla Vega Baja 1.25 San Sebastián Hatillo Yauco 1.20 20,000 Humacao Mayagüez Carolina Ponce Manatí 200,000 Population (US Census, 2010) San Juan Backup Slides… VIIRS nighttime detection capabilities (a) with and (b) without lunar illumination Miller et al., (2013) Remote Sens. 2013, 5(12), 6717-6766; doi:10.3390/rs5126717 STL Loess Time Series Decomposition Original time series Seasonal component Trend component Remainder component Mexico’s cyclical signal also peaks during the Holiday period, but is not as ubiquitous as the US signal. Patterns of peak demand are timed with the Eid al-Fitr (End of Ramadan). Mosul Captured by ISIS (10, June 2014) Tikrit Captured by ISIS (11, June 2014) Iraqi cities recently captured by the Islamic State in Iraq and Syria (ISIS) show marked average decreases in energy service provision (-84% since 4/1/2014) compared to their unoccupied counterparts (+6%). Problems? We need more human-centered energy research to address the challenges and barriers faced by climate change mitigation. Benefits? So What? The union of beliefs and traditions that distinguishes and define us as humans also shapes the future of our cities and communities. Belief systems, culture, and demographics all influence the timing and acceptability of global energy services and energy efficiency technologies. Human-Centered Energy Research Solutions? Changes in energy service demand are apparent from daily VIIRS night-sky imagery. This provides us with new insights into how human dimensions impact patterns of energy use.
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