The Role of Hillslope Soil Transport on Carbon Storage and Cycling in Permafrost Environments

Joel Rowland and Eitan Shelef, both from Los Alamos National Laboratory, are exploring the effect of downslope movement of soil into depositional hollows at the bottom of hillslopes can strongly control the cycling and storage of SOC.  In hilly terrain such as that which covers much of the Seward Peninsula in western Alaska (Figure 1), these SOC processes are accompanied by downslope soil motion, where SOC may accumulate and/or decompose through lateral transport processes. At present, these transport processes are not included in regional or global land surface models and are not accounted for in soil sampling strategies that underlie estimates of arctic SOC stocks.Read more...
Soil mantled hillslopes in Alaska.

Figure 1. Soil mantled hillslopes in Alaska. (a) Soil mantled hillslope in the Seward Peninsula, Alaska. (b) Hillshade and elevation contours (20m apart) maps of the same area shown in (a). (c) a topographic cross-section from point A' to B'.
Note the sigmoidal shape of the profile as well as that of the hillslope at the upper right of (a). The hill-toe section refers to the concave-up portion of the hillslope where deposition likely occurs.

 

Hydraulic Conductivity of Soil Samples from the BEO

Hydraulic conductivity was measured for 12 subsamples from cores selected during the core jamboree in February 2014. In laboratory research conducted by Tim Kneafsey (LBNL), the subsamples were taken from 6 frozen cores retrieved at the NGEE Arctic site from low and high centered polygons.   Read more...

Preliminary hydraulic conductivity data

Figure 2.Preliminary hydraulic conductivity data and sample location using X-ray CT cross-sections.

 


NGEE Arctic Data Policies and Data Management Guidance

NGEE Arctic data team has posted final drafts of three Data Policies for data sharing, fair-use, and collaboration at http://ngee-arctic.ornl.gov/content/ngee-arctic-data-management-policies-and-plans. Implementing these policies is critical to meeting the scientific goals and objectives of NGEE Arctic.
In addition, the data team has prepared a series of guides/help files for use by investigators for reporting, processing, and archiving data for both project and public sharing. We answer the burning questions -- What is a data set? How do I organize my data files for sharing? And more, at http://ngee-arctic.ornl.gov/content/metadata-entry-data-upload-and-data-management-help.

 

Safety Training Requirements -- New April 24, 2014

NGEE-Arctic participants and collaborators must complete the required viewing of safety videos and reading of safety manuals to be approved for field and laboratory work at NGEE-Arctic facilities in Barrow, Alaska.  The annual review of the manuals has been completed and resulted in only minor changes to the manuals:

  • The ATV job aid was deleted from the Field Safety Manual and fueling and hazardous material trasport was added.
  • Both manuals were updated with additional contact information.

 

Participants and collaborators are strongly encouraged to complete all training requirements prior to travel because computers and internet connectivity are limited in Barrow.

Training materials are only available on the NGEE-Arctic project website (https://ngee-arctic.ornl.gov/content/ngee-safety).

Access to training materials requires NGEE-Arctic website login. After login, the Safety tab will appear.

  • ORNL participants may access Training Materials with their ORNL UCAMS login UID and PWD.
  • Other participants and collaborators may access Training Materials with their website UID and PWD.
    • If you are not a registered website user, please request an account (Login tab). You will receive e-mail notification with your account information.
    • Note that it may take 24 to 48 hours for your account to be established.

Upon successful completion of the training requirements you will receive e-mail notification from NGEE-Arctic Management that you are approved for field and laboratory work at the NGEE-Arctic facilities in Barrow.