With soaring surface temperatures and new record highs recorded every year for the past 50 years, global warming continues to be one of the biggest threats to various regions around the world. Arizona in particular just recorded the hottest summer in the state’s history, unfortunately coinciding with an increase in heat related deaths across the state. Continued effects from the result of ongoing warming trends in regional environments could pose additional challenges for individuals in the future. 

Record high temperatures can affect the body in a variety of different ways, and create unstable biological conditions that can lead to death. The high surface temperatures also pose threats to infrastructure, technology, and vital installations in urban metropolitan areas. Negative associated effects of heat exposure can be exacerbated when necessary resources are compromised in heat wave events. Officials are still tallying the number of deaths that resulted from the record temperatures in Arizona this year, and many scientists are looking to the future, concerned about new associated risks. 

Record High Summer Temperatures

This summer proved to be a record breaking year for surface temperatures across many regions in the United States, and specifically in Arizona. Record keeping for temperatures began in the state in 1895, and this year experienced three of the highest recorded months on record.

Daily average temperatures this summer holdfast at 97 degrees Fahrenheit which surpassed the three year previous record of 96.7 degrees Fahrenheit. Phoenix also set a record for a 31 day streak of temperatures at or exceeding 110 degrees Fahrenheit. Heat waves like that seen in Phoenix are beginning to happen more frequently as the climate in the region becomes dryer and overall global temperature averages continue to rise. Officials began recording associated deaths in 2005 to identify where policy changes could be applied to lessen the impacts of heat related casualties. They have added several categories to discern the deaths and provide a well rounded investigation into their route cause and resolution.

Heat Related Death Information

• Sex

• Age

• Race

• Ethnicity

• Location 

• Indoors vs Outdoors

• Air Conditioner present?

• Working or not working

• Electricity present?

Collecting vital information like these statistics is vital for researchers when discerning associative risk factors in severe weather events like those of this summer. These electricity statistics are important because findings have influenced power companies to maintain vital electricity powering air conditioners running during heat waves, even if clients have not paid their bills. 

Many of the deaths recorded in previous years happened due to a lapse in power, leaving the affected individuals inside their homes without a working air conditioner. Having the means to cool off is vital during extended periods of record high temperatures, especially when outside averages exceed into the triple digits. 

Counting Heath Related Deaths

Counting and recorded heat related casualties can take an extended amount of time for officials because there are many factors involved in the investigations. There are investigations into the individual's past and present related health conditions, environmental hazards, toxicology reports, autopsies, weather forecasts, and resource assessments. Mariposa county investigates heat deaths including those caused by excessive temperatures, heat stroke, and heart attacks as the result of environmental stress. 

This year's records observed almost 75 percent of the total recorded deaths to have occurred outside exposed to the elements. Almost half of those deaths were homeless people who did not have access to air conditioning, water, or other vital resources. There are an estimated 10,000 people in Mariposa county without access to a home, so the numbers could be potentially much higher if severe conditions persisted even longer. 

Less than 100 of the recorded deaths so far happened indoors in Arizona. Most of these recorded deaths occurred in homes where the in unit air conditioners were turned off or disabled. 

Future of Heat Related Deaths

As global warming continues to impact the world, many regions are experiencing rapid environmental changes. While some regions are experiencing extended winters, rain, and moisture other regions like the southwestern United States have observed quite the opposite. Southern Arizona has just experienced its hottest recorded summer with an extended period of time exceeding triple digit temperatures. These conditions are not atypical for the desert region, however their extended durations and excessively high temperatures are a direct result of the effects of climate change. 

In the future regions like this will continue to see extended periods of extreme temperatures and the cities need to establish enough access to vital resources to prevent increases in heat related deaths. This summer already showed a dramatic increase compared to past years, and hopefully it will lead to improvements in policies controlling the distribution of access to life saving resources like air conditioning, water, and shelter.