The impact of COVID-19 lockdowns on surface urban heat island changes and air-quality improvements across 21 major cities in the Middle East

Ahmed M. El Kenawy^*, Juan I. Lopez-Moreno, Matthew F. McCabe, Fernando Domínguez-Castro, Dhais Peña-Angulo, Islam M. Gaber, Abduldaem S. Alqasemi, Khalifa M. Al Kindi, Talal Al-Awadhi, Mohammed E. Hereher, Sayed M. Robaa, Noura Al Nasiri, Sergio M. Vicente-Serrano