Residual Hotspot Photos and Hyperspectral Measurements: Water Well and Plant Area Hotspots Erin Male, William Pickles UC Santa Cruz September 21, 2009

E.Male, UCSC, Sept Locations of Hyperspectral Measurements N Meters

E.Male, UCSC, Sept Water Wells Hot Spot: 2008 vs : 2008: Before injection (facing SE), Mixture of all varieties of grasses and dandelions 2009: 2009: Before injection (facing W), Mostly short grass (like Kentucky Blue) and dandelions, No tall grass Unmown Region

E.Male, UCSC, Sept /3/2008, Day 25 (facing SE) 7/11/2008, Day 3 (facing E): Yellowing indicated initial stages of plant stress 2008 Water Wells Hot Spot: 2008

E.Male, UCSC, Sept Water Wells Hot Spot: 2008 Close up: 8/3/2008, 25 days of CO 2 (facing SE) Thin-bladed, short grass, resistant to CO 2 Stress (Kentucky Bluegrass?) New Shoots (Orchard Grass?) Various Tall Grasses

E.Male, UCSC, Sept Water Wells Hot Spot: 2009 SW End of Well After 1 week of CO2 * Asymmetric pattern of stress (Groundwater Flow?) Injection Well

E.Male, UCSC, Sept Water Wells Hot Spot: /12/2009: 28 days of CO2 (facing SW) Injection Well SW End of Well

E.Male, UCSC, Sept Plant Area Hot Spot (-1.5, 0) 2008: 2008: Before injection, 7/7/2008 (-1.55, 0) Mixture of all varieties of grasses 2009: 2009: Before injection, 7/10/2009 (-1.35, 0) More dandelions, less tall grass

E.Male, UCSC, Sept Can the change in vegetation species be seen spectrally? No significant differences in visible region between 2008 and 2009 experiments Subtle differences in Near-Infrared region, particularly in the slope of spectra from 750 to 950nm –Reflectance spectra of vegetation in the NIR (700 to 1300nm) is related to leaf structure More research to investigate this idea to follow

E.Male, UCSC, Sept. 2009

Having different mix of vegetation in the Hotspots may also explain the initial offset in NDVI values (also seen using Multispectral Camera) before the start of the 2009 injection Averaged NDVI