Report summary

Stanford University Department of Earth System Science in 2021-2023 reads as a 24-PI network with 17 internal PI collaborations. The dominant subject mix is Environmental Science as the leading field (43% of slots across 22 PIs; 22 labels), Global and Planetary Change as the leading subfield (16% of slots across 10 PIs; 10 labels), and Climate variability and models as the leading topic (6% of slots across 4 PIs; 4 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 Anne Dekas (16.4 weighted works; Microbial Community Ecology and Physiology, Gut microbiota and health); Scott Fendorf (15.7 weighted works; Heavy metals in environment, Soil Carbon and Nitrogen Dynamics). The most visible ties are Anne Dekas and Scott Fendorf (74 shared works, weight 8.3). The leading breakdown groups are group 1 with 10 PIs, 9 internal connections, weight 19.7, around Global and Planetary Change, Ecology, Environmental Engineering, led by Marshall Burke, David B. Lobell, Noah S. Diffenbaugh.