[ACG39-P05] Environmental controls on anomalous variation in solar-induced fluorescence during the last 10 years
Keywords:Remote sensing, Carbon dynamics
The SIF and biosphere land carbon uptake by Carbon Tracker 2016 has a strong negative correlationship in Australia and Middle of North America, especially in summer (JJA) in grass, shrub and rangeland. High correlation between SIF and CO2 concentration showed seasonal change. This suggests that the photosynthesis in drier and less productive ecosystems showed directly positive reactions to leaf biomass change increase probably due to simple canopy structure.
Summer SIF anomaly showed relatively high correlation coefficients to the anomalies in temperature, diurnal temperature range, potential evapotranspiration, cloudiness and precipitation depending on region. SIF anomaly also responses strongly to NiNO3 and other teleconnections in Africa, Australia, East and Central Asia, and North America. Land Cover specific analysis shows that cloudiness has negative relationship to the sensitivity of anomalies in SIF to that in cloudiness and precipitation slopes except for desert. Precipitation does not show clear relationship. Temperature shows positive response to sensitivity to cloudiness and precipitation, and negative one to that to temperature.