2020

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NSF Blog: No soils, no life

27 Oct 2020 - They’re beneath our feet, but we seldom hear important signals in the soils

Sessions related to CZ Science at the 2021 International Clay Conference

27 Oct 2020 - The 17th International Clay Conference will be held July 12-16, 2021 in Istanbul, Turkey.

2020 CZO Webinar Series on Sustainability

17 Jun 2020 - For an updated listing of these talks, including abstracts, see /national/education-outreach/sustainability-2020/ The U.S....

Geology of the Calhoun CZO

05 Jun 2020 - Barrett "Bear" Jordan's MS thesis on the geology of the Calhoun is now posted!  Bear's advisor Paul Schroeder says this is "a bit more...

2019

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CZOs at AGU 2019

19 Nov 2019 - A list of CZ-related sessions, abstracts and events at the 2019 AGU Fall Meeting.

CZ colleagues: Please contact us about proposals for NSF’s CZ Collaborative Network, due 02 Dec 2019

08 Jul 2019 - CZO will end Nov 2020, succeeded by the “CZ Collaborative Network”. Let’s explore how the CZ community can build upon the CZOs via new NSF proposals.

Graduate Student Critical Zone Reading Group Wraps the Semester with a Field Trip to Calhoun CZO

12 Jun 2019 - Five students travelled to Union, South Carolina for a two-day site visit June 6 – June 8 at the Calhoun CZO. This site visit was the...

Mac Callaham’s group presents at the Society for Freshwater Science annual meeting

31 May 2019 - Mac Callaham and his group shared their research on earthworms at the May 2019 Society for Freshwater Science annual meeting in Salt Lake City.

Calhoun weathering paper published in Nature’s Scientific Reports

14 Mar 2019 - Calhoun weathering paper is out in Nature's Scientific Reports.

2018

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CZOs at AGU 2018

19 Nov 2018 - The 2018 AGU Fall Meeting will be held December 10-14 in Washington, D.C.

Calhoun CZO featured in Duke Magazine

14 Nov 2018 - How critical zone science unearths secrets: The new cross-disciplinary field of study concerns itself with the living skin of the Earth.

Call for proposals: Research Coordination Networks (RCNs) Driving Convergent CZ Science

12 Jul 2018 - NSF Dear Colleague Letter: Research Coordination Networks (RCNs) for Driving Convergent Science in the Critical Zone

NSF Discovery articles focus on the CZOs.

10 May 2018 - The Discoveries section of the National Science Foundation's website on Critical Zone Observatories (CZOs).

Discussion paper open till April 5th in Biogeosciences

06 Mar 2018 - A discussion is open for the manuscript, "Elevating the biogeosciences within environmental research networks".

White paper of 2017 CZ Science Meeting in Arlington, VA

01 Jan 2018 - New Opportunities for Critical Zone Science Following the June 2017 Arlington Meeting for Critical Zone Science (hosted by CZO), a white booklet...

2017

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CZOs at AGU 2017

05 Dec 2017 - Information on CZO award recipients, events, presentations, etc. at the 2017 AGU Fall Meeting.

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.

X-ray Diffraction for Clay Minerals at Calhoun

01 May 2017 - Anna Wade (visiting from Duke University) and Jay Austin (based at the University of Georgia) are collaborating by using X-ray Diffraction (XRD) to...

Zach Brecheisen wins the Frederick K. Weyerhaeuser Forest History Fellowship

27 Apr 2017 - The Forest History Society announces that Zachary Brecheisen is the 2017-18 recipient of the F. K. Weyerhaeuser Fellowship! The fellowship consists...

The frontier beneath our feet — an AGU commentary on the critical zone

21 Apr 2017 - AGU has published a collection of commentaries highlighting the important role Earth and space science research plays in society.

2017 CZO Webinar Series: Critical Zone and Society

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

NSF REU Basic and Environmental Soil Science Training (BESST), Summer 2017

05 Jan 2017 - NSF REU for summer 2017: Basic and Environmental Soil Science Training (BESST)

2016

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Bruno Latour talks about the Calhoun CZO in Munich

08 Dec 2016 - Bruno Latour, anthropologist and philosopher of science, gave a talk on Critical Zone science and the Anthropocene entitled "From the Anthropocene...

CZOs at AGU 2016

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

Four soil pits installed in new Research Area 8!

21 Nov 2016 - Four soil pits were installed in new Research Area 8 at the Calhoun CZO on 21-22 November 2016 for easy access for soil sampling down to 2 meters.

Eight new soil pits dug at the Calhoun!

17 Oct 2016 - Eight soil pits were installed at the Calhoun CZO on 17-18 October 2016 for easy access for soil sampling down to 2 meters. Photo: Will Cook.

First flux tower erected at the Calhoun CZO

17 Aug 2016 - On August 17, 2016 a crew from Georgia Tech led by graduate student Yao Tang and professor Jingfeng Wang, with a little help from the folks at Duke,...

AGU Abstracts due August 3: List of CZ Sessions

24 Jul 2016 - AGU 2016 sessions related to CZ science. Submit your abstract by August 3.

Going deep! Gas wells installed at 8.5 m

14 Jul 2016 - Another Calhoun CZO record - gas reservoirs installed at 8.5m depth! Jay Austin, Zach Brecheisen, and Dan Richter only stopped at 8.5m because they...

TDR probes installed to monitor soil moisture

13 Jul 2016 - On July 13, 2016, Duke PhD candidate Zach Brecheisen, with assistance from his advisor Dan Richter and Jay Austin, installed TDR probes at 25-cm...

Critical Zone Profile - Diego Barcellos

09 Jun 2016 - PhD Student, Soil Science, University of Georgia

Historic Legacy Sediments Examined at 2016 Summer Science Meeting

03 Jun 2016 - The Calhoun CZO held its third annual Summer Science Days meeting.  In the photo, Calhoun researchers discuss a 18th-19th century pine root...

2015

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EOS: Taking the Pulse of the Earth’s Surface Systems

04 Dec 2015 - Taking the Pulse of the Earth's Surface Systems In September of 2014, Laurel Larsen (UC Berkley), Elizabeth Hajek (Penn State), and others...

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

15 Nov 2015 - Get a sense of the people and the work. Several members of the Calhoun CZO are profiled here, including students and professors.

Critical Zone Profile - KYUNGJIN (KJ) MIN (soil ecologist, PhD student)

15 Nov 2015 - PhD Student, Department of Ecology and Evolutionary Biology, University of Kansas

Critical Zone Profile - KATHERINE O’NEILL (ecosystem ecologist, Associate Professor)

15 Nov 2015 - Associate Professor, Environmental Science, Roanoke College

Holcombe’s Branch floodplain profiles

05 Nov 2015 - Dan Richter has been excavating soils profiles up and down the banks of Holcombe's Branch in the Calhoun historic watersheds area, which will...

New study suggests bedrock weathering based on topography

30 Oct 2015 - St. Clair et al. suggest tectonic stresses interact with topography to influence bedrock weathering.

Big Rain Event at the Calhoun!

13 Oct 2015 - The Calhoun CZO received nearly 25 cm rain in 24-hr Sunday 4 October.  Paul Schroeder shot a photo of Ryan Fimmen's 2004 "Tyger Stripe"...

Bruno Latour, Science philosopher and anthropologist visits scientists at the Calhoun CZO

09 Oct 2015 - A dozen diverse scientists and scholars from five universities, united by their interest in Prof. Latour and in human-nature relations, traveled by...

Sino-USA CZO scientists meet to discuss future collaborations

09 Oct 2015 - About 60 Chinese and American critical zone scientists met in Guiyang, China for two days of discussions and presentations on the significance of...

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...

Salon on Deep Critical Zone Architecture held June 14-18, 2015

26 Jun 2015 - An international group of 17 researchers met at Snow Mountain Ranch, Granby, Colorado for 3.5 days of presentations and discussions on the nature of...

Calhoun CZO Google Map

03 Mar 2015 - Map showing all research sites at the Calhoun CZO.

2014

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Deep historic legacy sediments along Holcombe’s Branch

17 Dec 2014 - Examining historic legacy sediments along Holcombe's Branch.

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.

Duke PhD Students win 2-year IGERT Fellowships

23 Jul 2014 - Three students working on the Calhoun CZO have been selected to join Duke’s WISeNet program on wireless technology.  They will work...

Upcoming LiDAR Flights 2014-15

23 Jul 2014 - Investigators are preparing for a leaf-on flight of the Calhoun Critical Zone Observatory area of about 150-km2 during the summer of 2014.  The...

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.

Reactive Transport Modeling Survey – Community Needs for Biogeochemical Studies

08 Apr 2014 - Reactive Transport Modeling Survey – Community Needs for Biogeochemical Studies The below survey is designed by Alexis Navarre-Sitchler, Kate...

“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)

Calhoun Geophysics Week with Wyoming Center for Environmental Hydrology and Geophysics

01 Apr 2014 - Wyoming Experts in Geophysics Visit the Calhoun CZO for Four Days of Measurements

Richter interviewed on YouTube by British Society of Soil Science

01 Apr 2014 - Prof. John Quinton of Lancaster University interviews Prof. Richter for the BSSS on the changing model of soil, the topic of the 2013 Russell Lecture

Introducing Calhoun CZO

03 Mar 2014 - The Calhoun CZO seeks to understand how Earth’s Critical Zones respond to and recover from severe erosion and land degradation.