Faculty, Research Staff and Students in ESS utilize state-of-the-art facilities, ranging from distributed computing to advanced mass spectrometers, to stable-isotope facilities. The wide range of research underway in the department involves virtually every scale, from the smallest microbe, to the largest ocean system.

John V. Croul Hall Croul Hall is a state-of-the-art research facility, which was built through a private-public partnership. Croul Hall houses Earth System Science, including faculty and staff offices, laboratories, and conference rooms.		Green Planet Green Planet is a supercomputer devoted to modeling land, atmosphere and ocean interactions involved in the Earth’s climate system. Researchers in the Department of Earth System Science use Greenplanet to analyze and make predictions based on massive amounts of data.
High Resolution Mass Spectrometer This facility is a high resolution triple-sector mass spectrometer. It is used for the identification and quantification of hydrocarbons and halocarbon trace gases in atmospheric samples, and air extracted from polar firn and ice cores.			Instrumentation Development Facility This facility provides electronic engineering and instrumentation support. The facility assists in the maintenance, development, and field deployment of analytical instrumentation.
Stable Isotope Ratio Mass Spectrometry This facility makes high precision isotopic measurements on very small amounts of atmospheric trace gases (e.g. methane, nitrous oxide, carbon dioxide, and carbon monoxide).		W. M. Keck Carbon Cycle Mass Spectrometer The W.M. Keck Carbon Cycle Accelerator Mass Spectrometer (Keck) uses radiocarbon as a tracer of the global carbon cycle. The facility analyzes 14C in carbon from natural waters, soils, sediments, the atmosphere, and biota.