Passed in April of 2010, Arizona Senate Bill 1070 is nationally recognized as the first state-level anti-immigration legislation of its kind that deputized local police officers to enforce immigration laws. Though response strategies varied widely across activists and organizations, many community organizations devised strategies specifically aimed to protect and assist the undocumented community during the reign of terror that accompanied SB 1070. In looking at the reflections of activists and organization leaders on their own actions and decision-making rationale, I analyze how their strategies and tactics worked to both counter and reconceptualize hegemonic notions of citizenship, belonging, and community through the creation of networks and knowledge funds. By specifically examining the efforts made by No Mas Muerte, Puente Human Rights Movement, and the Calle Dieciseis Mural Project, I show that efforts that go beyond voter mobilization and legal action, which not only work to combat dominant rhetoric but also center the voices of the targeted population through disrupting public space, are essential to responding to political efforts designed to target vulnerable communities. Given their necessity, academics and institutional actors must acknowledge the importance of grassroots efforts in contributing to inter-institutional strategies and ensure that a ground-up analysis of community-based organizations informs their actions taken against state-level anti-immigration laws.

Summer daytime cooling efficiency of various land cover is investigated for the urban core of Phoenix, Arizona, using the Local-Scale Urban Meteorological Parameterization Scheme (LUMPS). We examined the urban energy balance for 2 summer days in 2005 to analyze the daytime cooling-water use tradeoff and the timing of sensible heat reversal at night. The plausibility of the LUMPS model results was tested using remotely sensed surface temperatures from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) imagery and reference evapotranspiration values from a meteorological station. Cooling efficiency was derived from sensible and latent heat flux differences. The time when the sensible heat flux turns negative (sensible heat flux transition) was calculated from LUMPS simulated hourly fluxes. Results indicate that the time when the sensible heat flux changes direction at night is strongly influenced by the heat storage capacity of different land cover types and by the amount of vegetation. Higher heat storage delayed the transition up to 3 h in the study area, while vegetation expedited the sensible heat reversal by 2 h. Cooling efficiency index results suggest that overall, the Phoenix urban core is slightly more efficient at cooling than the desert, but efficiencies do not increase much with wet fractions higher than 20%. Industrial sites with high impervious surface cover and low wet fraction have negative cooling efficiencies. Findings indicate that drier neighborhoods with heterogeneous land uses are the most efficient landscapes in balancing cooling and water use in Phoenix. However, further factors such as energy use and human vulnerability to extreme heat have to be considered in the cooling-water use tradeoff, especially under the uncertainties of future climate change.