Significant Inverse Influence of Tropical Indian Ocean SST on SIF of Indian Vegetation during the Summer Monsoon Onset Phase

Sea surface temperature (SST) substantially influences the land climate conditions through co-variability of multiple variables, which in turn affect structural and functional characteristics terrestrial vegetation. Our study explored varying responses vegetation photosynthesis India to SST variations tropical Indian Ocean during summer monsoon. To characterise photosynthetic activity, we used solar-induced chlorophyll fluorescence (SIF). results demonstrated a significant negative SST-SIF relationship onset phase monsoon: SIF anomalies northern central regions decrease when strong warm persist Ocean. Further, increase with cold SST. However, are less impactful on relative positive anomalies. The observed statistically SST–SIF link is feasible atmospheric teleconnections. During monsoon onset, favour weakened flow, decreasing moisture transport from ocean mainland. resultant water deficiency, along high air temperature, created stress condition reduced rate, thus demonstrating across India. Conversely, strengthened winds period increased availability Negative also dampen resulting identified would be beneficial generate simple framework that aids detection probable impact growth associated rapidly