Seasonal Changes -- Time for Paradigm Shift
Branislava Lalic, Ana Firanj Sremac

TL;DR
This paper proposes a novel, satellite-based framework for classifying seasonal changes using phenological markers and a new seasonality index, improving understanding of climate change impacts on ecosystems and human activities.
Contribution
It introduces a phenology-based, scalable classification system for seasons that accounts for climate disruptions, using satellite data and ground observations to define seasonal boundaries.
Findings
Shifts in seasonal patterns in the Euro-Mediterranean region.
Milder transitions influenced by the Gulf Stream and urban heat islands.
Enhanced understanding of seasonal timing for climate adaptation strategies.
Abstract
Season and their transitions play a critical role in sharpening ecosystems and human activities, yet traditional classifications, meteorological and astronomical, fail to capture the complexities of biosphere-atmosphere interactions. Conventional definitions often overlook the interplay between climate variables, biosphere processes, and seasonal anticipation, particularly as global climate change disrupts traditional patterns. This study addresses the limitations of current seasonal classification by proposing a framework based on phenological markers such as NDVI, EVI, LAI, fPAR, and the Bowen ratio, using plants as a nature-based sensor of seasonal transitions. Indicators derived from satellite data and ground observations provide robust foundations for defining seasonal boundaries. The normalized daily temperature range (DTRT), validated in crop and orchard regions, is hypothesized…
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Taxonomy
TopicsEcosystem dynamics and resilience · Remote Sensing in Agriculture · Tree-ring climate responses
