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GCE-LTER Project News

April 2021 Calendar

3-Year Review Planning: Session 2
date: 04/13/2021
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Flux Tower VTC
date: 04/14/2021
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3-Year Review Planning: Session 3
date: 04/15/2021
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3-Year Review Planning: Session 5
date: 04/19/2021
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Multispec Flight
dates: 04/20/2021 to 04/21/2021
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(View all 10 upcoming events for April 2021)

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New or Updated Publications

02/19/2021 –
Narron, C., Mishra, D., O'Connell, J.L., Cotten, D.L., Hawman, P. and Mao, L. 2019. Presentation: Assessing tidal wetland above- and belowground net primary production using field and in situ measurements. Carbon fluxes in coastal systems. 2019 CERF 25th Biennial Conference, 11/05/2019, Mobile, AL.
02/16/2021 –
Davidson, K. 2019. Trade-offs between multiple ecosystem services in UK and US salt marshes. Ph.D. Dissertation. Swansea University, Swansea, Wales, United Kingdom.
01/28/2021 –
Sharp, S. and Angelini, C. 2020. Predators enhance resilience of a saltmarsh foundation species to drought. Journal of Ecology. (DOI: 10.1111/1365-2745.13525)

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Latest Data Releases

03/11/2021 – Data Release

Historic Palmer Drought Severity Index data sets and plots for Georgia Division 9 have been updated in the GCE Data Portal to cover the period of January 1895 to February 2021. These indices are useful for characterizing the timing and severity of drought events in the long-term climate record. The data were downloaded from NOAA and converted into tabular data sets with decoded state and date columns to simplify filtering, plotting and analysis. More information about these indices and data sets is available here.

03/02/2021 – Data Release

Provisional CTD data from the GCE Mini-Cruises are now processed and online.  https://gce-lter.marsci.uga.edu/private/app/ctd_data.asp

06/19/2020 – Data Release

Peter Hawman in Deepak Mishra's lab submitted four data sets including eddy covariance analysis from the GCE-LTER flux tower and the Mishra flux tower at the Grand Bay NERR site in Mississippi as well as leaf area index data from the sites:

MSH-GCET-2006: Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the GCE-LTER flux tower site from December 2018 to January 2020

MSH-NASA-2006: Eddy covariance 30-minute CO2 fluxes with accompanying biophysical variables from the Grand Bay, Mississippi flux tower site from March 2018 to January 2019

PLT-NASA-2006a: Leaf area index for Spartina alterniflora near the GCE-LTER Flux Tower in 2018 and 2019

PLT-NASA-2006b: Leaf area index and above ground biomass for Juncus roemerianus in the Grand Bay National Estuarine Research Reserve from 2015 to 2019

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Latest File Uploads

04/06/2021 – Document (GCE only)
U.S. Army Corps Of Engineers, Savannah District, 2017 Pre-Construction Notification (Pcn) For Use Of Certain Nationwide Permits (NWP) (details)

04/05/2021 – Document (GCE only)
Georgia DNR Research Requirements and Application Form and Revocable License Request - September 2019 (details)

03/19/2021 – Spreadsheet (GCE only)
Maintenance log for the GCE Flux Tower (details)

03/02/2021 – Spreadsheet (GCE only)
Sampling log for the February 2021 GCE monitoring cruise (10-12 February, 2021) (details)

02/05/2021 – Spreadsheet (GCE only)
Sampling log for the January 2021 GCE monitoring cruise (13 January, 2021) (details)

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GCE Project Announcements

03/26/2021 – IM News

The GCE Data Toolbox for MATLAB is a software framework for metadata-based processing, quality control and analysis of environmental data. The software was originally developed by Wade Sheldon for GCE data management in 2001 and has been continually maintained and refined. This software was released under an open source license in 2010 and is currently in use at many other LTER sites and institutions for sensor data processing.

(keep reading)

(contact Wade Sheldon for additional information)
03/03/2021 – Monitoring Program

Please be aware that the rain gauge installed on the Marsh Landing weather station at the Sapelo ferry dock stopped recording precipitation some time in October 2020. The gauge is being removed by SINERR personnel for recalibration and will be replaced soon. Affected data sets in the GCE Data Portal have been flagged to reflect the instrumentation problem.

If your analysis requires precipitation, note that 15 minute precipitation data are available from the GCE Flux Tower a few kilometers up the Duplin River from Marsh Landing, as well as on the mainland at Hudson Creek/Meridian.

(contact Wade Sheldon for additional information)
03/03/2021 – Monitoring Program

The anemometer at the Hudson Creek/Meridian weather station was replaced following damage from Hurricane Matthew in October 2016. However, wind speeds reported by the new anemometer have always been significantly lower than those reported by the prior instrument and parallel measurements at the Marsh Landing weather station on Sapelo Island and Gray's Reef buoy. After numerous checks and recalibrations, and installation of a second anemometer for comparison, USGS has finally found and corrected the issue. In brief, the sensor was internally configured to report in meters per second instead of the USGS standard mph, leading to a 2.4-fold error in magnitude.

(keep reading)

(contact Wade Sheldon for additional information)

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This material is based upon work supported by the National Science Foundation under grants OCE-9982133, OCE-0620959, OCE-1237140 and OCE-1832178. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.