Using a sample of 58 million J/ψ events collected with the BESII detector at the BEPC, more 2 than 100,000 J/ψ → ppπ 0 events are selected, and a detailed partial wave analysis is performed. The branching fraction is determined to be Br(J/ψ → ppπ 0 ) = (1.33 ± 0.02 ± 0.11) × 10 −3 . A long-sought 'missing' N * , first observed in J/ψ → pnπ − , is observed in this decay too, with mass and width of 2040 +3 −4 ± 25 MeV/c 2 and 230 +8 −8 ± 52 MeV/c 2 , respectively. Its spin-parity favors 3 2 + . The masses, widths, and spin-parities of other N * states are obtained as well.
Water resources components are characterized by large spatial and temporal differences. Currently, the water resources monitoring system is based mainly on ground monitoring. However, it is difficult to carry out large-scale and long-term monitoring based solely on ground measurements. There are still knowledge gaps in the fine and dynamic water resources management. With continuous and rapid increases in satellite data, this paper examines the use of multi-mission satellite data, ground observation systems, and land data assimilation systems to jointly develop a stereoscopic monitoring system, which would be of value to address the monitoring gaps for water cycle components and to enhance the monitoring capability of water resources in China, with important implications for stereoscopic water resources monitoring for other countries and regions globally.
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