Journal of Remote Sensing / 2021 / Article / Fig 3

Review Article

Mapping Crop Phenology in Near Real-Time Using Satellite Remote Sensing: Challenges and Opportunities

Figure 3

Spatial patterns in real-time monitoring of crop phenology (DOY, day of year) in the Midwestern United States in (a, b) 2014 and (c, d) 2015. (a, c) Midgreenup phase and (b, d) maximum greenness onset. ND: North Dakota; SD: South Dakota; NE: Nebraska; KS: Kansas; MN: Minnesota; IA: Iowa; MO: Missouri; WI: Wisconsin; IL: Illinois; IN: Indiana (adopted from Liu et al. [47]).