ARCHIVED CONTENT: In December 2020, the CZO program was succeeded by the Critical Zone Collaborative Network (CZ Net) ×



Undergraduate course curriculum, “Introduction to Critical Zone Science,” available free online

01 Jan 2018 - A 15-week semester-long upper-level undergraduate course curriculum entitled “Introduction to Critical Zone Science” is now available free online.


Water Resources Research Special Collection: Concentration-discharge relations in the critical zone

30 Oct 2017 - Water Resources Research published a new special collection in September 2017 featuring concentration-discharge research from multiple CZOs.

2017 CZO Webinar Series: Critical Zone and Society

06 Apr 2017 - 2017 CZO Webinar Series: Critical Zone and Society.


CZOs at AGU 2016

22 Nov 2016 - CZOs at AGU 2016: Agenda and award recipients

Critical Zone Q&A with researcher Adrian Harpold

19 Oct 2016 - University of Nevada Reno's Adrian Harpold reflects on his past and present time researching at Critical Zone Observatories.


Joint AGU-ESA Event Brings Together Collaborative Networks

17 Aug 2015 - Members of AGU and the Ecological Society of America came together in their first joint event to discuss opportunities for research collaboration.

CZO Ecology Session at ESA 2015 Meeting

16 Jul 2015 - A session entitled 'Ecology in the Critical Zone" will take place at the Ecological Society of America (ESA) 2015 Meeting held  from August...

Jon Chorover to speak at international workshop on hydro-biogeochemical processes

16 Jul 2015 - Jon Chorover of the Santa Catalina Mountains & Jemez River Basin CZO has been invited to talk at the Hydro-Biogeochemical Processes: Mechanisms,...

Video: CZ graduate students reflect on experience at University of Western Australia Summer School

13 May 2015 - Students from around the Worldwide Universities Network (WUN) gathered in Perth for two weeks in Feb. 2015 for the Inaugural WUN Summer School.

Critical Zone Profiles - Meet the people doing CZO science (Catalina-Jemez CZO)

19 Mar 2015 - Get a sense of the people and the work. Several members of the Catalina-Jemez CZO are profiled here, including students and professors.

Critical Zone Profile - CHRISTOPHER SHEPARD (soil researcher, PhD student)

17 Mar 2015 - PhD Student; Soil, Water, and Environmental Science; University of Arizona.

Critical Zone Profile - JENNIFER MCINTOSH (hydrobiogeochemist, associate professor)

17 Mar 2015 - Associate Professor, Hydrology and Water Resources, University of Arizona.

Critical Zone Profile - KYLE TROSTLE (geochemist, postdoctoral researcher)

13 Mar 2015 - Postdoctoral Researcher; Soil, Water, and Environmental Science; University of Arizona.

Critical Zone Profile - XAVIER ZAPATA-RIOS (hydrologist, PhD student)

13 Mar 2015 - PhD Student, Hydrology and Water Resources, University of Arizona.

Critical Zone Profile - RACHEL GALLERY (microbial biologist, assistant professor)

13 Mar 2015 - Assistant Professor, School of Natural Resources and the Environment, University of Arizona.


2014 All Hands Meeting

24 Apr 2014 - Information for the 2014 All Hands Meeting for the CZO Network on 21-14 September, including registration information and abstract submission.

“What’s so critical about the Critical Zone?” webinar

02 Apr 2014 - March 31, 2014. Dr. Enriqueta Barrera (NSF CZO program director) and Dr. Gordon Grant (USFS; CZO Steering Committee chairperson)


Best student presentation award

16 Sep 2013 - Congratulations to Caitlin Orem for the best student presentation award at the Chapman conference on Post-wildfire Runoff in Estes Park, CO.

Post-doctoral researcher Adrian Harpold funded to accomplish cross-CZO science

11 Jan 2013 - Harpold awarded an NSF Earth Sciences Postdoctoral Fellowship for a research and education program that spans 3 western Critical Zone Observatories

In Memoriam: Frederick Scatena 1954-2013

02 Jan 2013 - Frederick Scatena, PI of the Luquillo CZO, died peacefully at home on January 2, 2013 after a brief battle with cancer. We mourn the loss.


Peter Troch received EGU’s John Dalton Medal 2011

01 Oct 2011 - The European Geosciences Union (EGU) has awarded the John Dalton Medal to Peter A. Troch for his seminal contributions to hydrology in the areas of...

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