3.1.2. Annualized Irrigated Areas (AIA): Areas considering the inten- sity of irrigation
The annualized irrigated areas (AIAs) are defined as the sum of the irrigated areas during a different crop-growing seasons (e.g., season 1, 2, and continuous year-round). Thus, AIA considers the intensity of irrigation. For each class, a cropping calendar is derived from time-series NDVI of the class to determine seasonality (or whether the area has single, double, or triple cropping). There is no nearest equivalent of AIA in FAO/UF-derived statistics. In the Indian national statistics, the nearest equivalent of annually averaged irrigated areas is Irrigation Potential Utilized (IPU) as defined in India's Ministry of Water Resources (MoWR, 2005) and also, at times, referred to as Gross Irrigated Areas (GIAs).