Anomalous Net Biome Exchange Over Amazonian Rainforests Induced by the 2015/16 El Niño: Soil Dryness‐Shaped Spatial Pattern but Temperature‐dominated Total Flux

The magnitude and spatial pattern of anomalous net biome exchange (NBE) induced by the 2015/16 El Niño over Amazonian rainforests remain uncertain. We here investigated them using multi-model posterior NBE products in Orbiting Carbon Observatory-2 (OCO-2) version 10 modeling intercomparison project. Results suggest that relative to annual average 2017/18, larger carbon release occurred eastern northern 2015/16, with a total flux approximately 0.4 PgC yr−1 after assimilating satellite-observed column CO2 concentrations (XCO2) land. further find this was predominantly determined soil dryness, while positive anomaly dominated higher temperature its contribution 68～70%. believe atmospheric inversions more XCO2 future can provide us comprehensive understanding how cope abiotic stresses events.