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reveal the mechanism of intermittent coupling, where the nodes are connected merely in discontinuous time durations. Instead of the common weighted average technique, by proposing a direct error method and constructing piecewise Lyapunov functions, several intermittently adaptive designs are developed to update the complex-valued coupling weights. Especially, an adaptive pinning protocol is designed for ICCVNs with heterogeneous coupling weights and the synchronization is ensured by piecewise adjusting the complex-valued weights of edges within a spanning tree. For ICCVNs with homogeneous coupling weights, based on a connected dominating set, an intermittently adaptive algorithm is developed which just depends on the informationmore »
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Atmospheric ammonia (NH3) is the primary form of reactive nitrogen (Nr) and a precursor ofammonium (NH4+) aerosols. Ammonia has been linked to adverse impacts on human health, the loss ofecosystem biodiversity, and plays a key role in aerosol radiative forcing. The midwestern United States is themajor NH3source in North America because of dense livestock operations and the high use of syntheticnitrogen fertilizers. Here, we combine tall‐tower (100 m) observations in Minnesota and Weather Researchand Forecasting model coupled with Chemistry (WRF‐Chem) modeling to investigate high and low NH3emission episodes within the U.S. Corn Belt to improve our understanding of the distributionmore »
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