National Critical Zone Observatories Program All Hands Meeting participants (May 8‐12, 2011), Biosphere 2, University of Arizona, Tucson, AZ. 

The community of individuals involved in Critical Zone research is diverse in disciplines and organizations.  Students and faculty from across the US collaborate to resolve how ecological, hydrological, geomorphic and biogeochemical processes interact leading to long-term evolution of the Critical Zone.

UA Earthweek

The annual UA Earthweek is a weeklong collection of natural science research symposia including SWES (Soil, Water and Environmental Science) Day, El Dia del Agua (Hydrology and Water Resources), Geodaze (Geosciences), AIR (Atmospheric Science) Day, and LTRR (Laboratory of Tree-Ring Research) Day. This large event is the main UA research symposium and is completely run by graduate students from all of the School of Earth and Environmental Science departments. During the week, undergraduate and graduate students present talks and posters on their research to a mixed audience of student body, alumni, public, and researchers. Every year Earthweek includes many presentations from the Jemez-Catalina CZO and this year includes graduate student Michael Pohlmann (SWES co-chair) and Ph.D. candidate Caitlin Orem (Geodaze co-chair) on the organization staff.

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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.


Forests Worldwide Vulnerable to Drought, UA Researcher Says

28 Aug 2015 - David Breshears was interviewed by Sara Hammond about forest vulnerability to growing risks of drought and heat-induced die-off. Read and listen...


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,...

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.

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...

Using a CZO network to explore the architecture, dynamics and evolution of the Critical Zone

03 Nov 2014 - The US CZO National Office has organized a webinar on December 8, 2014 at 11AM - 12:30 PM ET.

“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)

CZO Presentations at 2012 AGU

03 Dec 2012 - A listing of more than 125 CZO-related presentations for the 2012 annual meeting of the AGU.

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