Such networks generally consist of many small sensor nodes which are arranged into clusters to monitor environmental conditions (Akyildiz et al. 2002). WSN play several roles in scientific and industrial fields, for example, measuring GHG emissions such as CO₂ (Stocker et al. 2013; Metz et al. 2007), CH₄ emissions (Tümer and Gündüz, 2010) and NH₃ and N₂O emissions from fertilizer (Jung et al. 2008; Ruiz-Garcia, et al. 2009). While non-wired sensors can perform similar tasks, wireless sensors can operate in a diversity of environments with advantages in cost, size, power, flexibility and distribution (Ruiz-Garcia et al. 2009). Wireless sensors can also access spaces that wired sensors cannot, for example concrete structures (Norris et al. 2008).