Report summary

Princeton University Department of Civil and Environmental Engineering in 2021-2023 reads as a 27-PI network with 17 internal PI collaborations. The dominant subject mix is Environmental Science as the leading field (35% of slots across 16 PIs; 16 labels), Environmental Engineering as the leading subfield (12% of slots across 8 PIs; 8 labels), and Advanced Materials and Mechanics as the leading topic (4% of slots across 3 PIs; 3 labels). Overall the pattern is balanced: there is enough structure to identify active groups, while the field mix still leaves room for multiple research identities. The leading PI names are Zhiyong Jason Ren (27.9 weighted works; CO2 Reduction Techniques and Catalysts, Microbial Fuel Cells and Bioremediation). The most visible ties are Peter R. Jaffé and Shan Huang (8 shared works, weight 5.3). The leading breakdown groups are group 1 with 6 PIs, 7 internal connections, weight 5.6, around Global and Planetary Change, Atmospheric Science, Civil and Structural Engineering, led by Zhiyong Jason Ren, Amilcare Porporato, Claire E. White; group 2 with 6 PIs, 5 internal connections, weight 3.2, around Environmental Engineering, Pollution, Plant Science, led by Anu Ramaswami, Denise L. Mauzerall, Ning Lin.