uid=PIE,o=EDI,dc=edirepository,dc=org
all
public
read
MAR-NE-EddyFlux-2013
Eddy flux measurements during 2013 from high marsh (Spartina patens/short Spartina alterniflora) off Nelson Island Creek, Rowley, Massachusetts
Anne
Giblin
Marine Biological Laboratory
(508) 289-7488
(508) 457-1548
agiblin@mbl.edu
http://orcid.org/0000-0003-3851-2178
Inke
Forbrich
Marine Biological Laboratory
(508) 289-7741
(508) 457-1548
iforbrich@mbl.edu
Plum Island Ecosystems LTER
http://pie-lter.ecosystems.mbl.edu/
Plum Island Ecosystems LTER
http://pie-lter.ecosystems.mbl.edu/
2016
English
We deployed an eddy covariance system to measure ecosystem-atmosphere exchange of CO2 above a high marsh system (Spartina patens, short Spartina alterniflora) located on the Parker River Wildlife Refuge in marshes of Plum Island Sound, Rowley MA. This data represents the growing season CO2 exchange (May-October) in 2013.
Primary Production
Organic Matter
Core Areas
high marsh
primary production
organic matter
Massachusetts
carbon fluxes
net ecosystem exchange
PIE LTER
Plum Island Ecosystems
LTER Controlled Vocabulary
Data Policies
PIE LTER Data Use Agreement
This work is licensed under the Creative Commons Attribution 4.0 International License, CC BY - Attribution. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:
1) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier.
For example: Giblin, Anne; Hopkinson, Charles (2000): Rates of benthic metabolism and nutrient cycling in the Parker and Rowley Rivers of the Plum Island Sound estuary. Plum Island Ecosystems LTER, Long Term Ecological Research
Network. http://dx.doi.org/10.6073/pasta/17fa8b4fef50c7b85cac3d61482a7cb6
2) Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. The Data User should contact the Data Set Contact to ensure the appropriate Granting Programs are acknowledged.
For example: Data sets were provided by the Plum Island Ecosystems LTER. This material is based upon funding supported by the National Science Foundation under Grants #OCE-9726921, OCE-0423565, OCE-1058747, OCE-1238212, OCE-1637630.
3) Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
4) Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.
5) Disclaimer. While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.
https://pie-lter.ecosystems.mbl.edu/content/eddy-flux-measurements-during-2013-high-marsh-spartina-patensshort-spartina-alterniflora-nel
PIE Eddy Flux station in high marsh (S. patens, short S. alterniflora) off Nelson Island Creek, Parker River National Wildlife Refuge, Rowley, MA
-70.828002929688
-70.828002929688
42.739387512207
42.739387512207
0
0
meter
2013-01-01
2013-12-31
Data collection and processing complete
Version 01: January 21, 2016, data and metadata created to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007_Jan2015.xlsm 1/15/15 4:26 PM for QA/QC to EML 2.1.0
Plum Island Ecosystems LTER
http://pie-lter.ecosystems.mbl.edu/
Plum Island Ecosystems LTER
http://pie-lter.ecosystems.mbl.edu/
Plum Island Ecosystems
We deployed one eddy covariance system to measure NEE of the dominant high marsh at PIE. The location of the tower is ca. 2km away from the parking lot at Stackyard Road within the Nelson Creek catchment. Deployment of the system is seasonal from mid-April to mid-November. The site was equipped with a Campbell Scientific® Closed Path System (CPEC200). Micrometeorological instrumentation was mounted on a tower at a height of 4.16m above the marsh surface at low tide. 10Hz rawdata were stored on a 2 Gb PCMCIA card and downloaded every two to three weeks. Power for the datalogger and instrumentation was located ca.8 m to the northeast of the tower and consisted of four south-facing solar panels and four 6 V 225 amp-hour batteries.
Environmental data were recorded as 10min averages. Air temperature and relative humidity were monitored at the same height as the anemometer (Campbell Scientific HC2S3 enclosed in a naturally aspirated radiation shield). A four-component net radiometer (Hukseflux NR01) was mounted 1.5 m aboveground of the high marsh. At the same height, two sensors (LI190SB, Licor) monitored incoming and reflected photosynthetically active radiation (PAR). In addition, a pressure transducer (Campbell Scientific CS456) recorded water table height at the high marsh. Soil temperature at a depth of 2cm, 6cm, 10cm, 20cm and 40cm was measured with (TCAV-L; Campbell Scientific; Logan, Utah, USA), and soil heat flux at a depth of 8 cm was measured with two soil heat flux plates (HFP01-SC; Campbell Scientific; Logan, Utah, USA). This data was recorded on a separate CR3000 datalogger.
Turbulent fluxes of momentum, sensible heat, latent heat and CO2 were determined by the eddy covariance technique (Baldocchi et al. 1988). Half hourly CO2 and H2O fluxes were calculated as the covariance between the turbulent departures from the mean of the 10 Hz vertical wind speed measured with a 3D sonic anemometer (CSAT3; Campbell Scientific; Logan, Utah, USA) and the CO2 and H2O dry mixing ratio measured with the closed path analyzer. Fluxes were processed using EdiRe software (Robert Clement, University of Edinburgh) and reported using the meteorological sign convention where negative NEE indicates carbon uptake and positive NEE indicates carbon loss from the ecosystem. Two coordinate rotations were performed on the wind components, and the time lag between wind and CO2 mixing ratio measurements was determined and removed for each averaging interval of 30min. For every 30 min period, a factor for the correction of the frequency attenuation of the flux was calculated according to Moore [1986] and applied to the flux. Fluxes were calculated using the Edire software (version 1.5.0.32, R. Clement, University of Edinburgh, UK). Afterward, fluxes were filtered for system malfunctioning and calibration periods, integral turbulence characteristics, stationarity, and wind direction [Foken etal., 2012]. We also excluded measurements when less than 75% of the flux was generated within the study area. Thresholds in friction velocity (u∗) for nighttime fluxes were determined according to Papale et al. [2006] and was set to 0.14m/s..
To continuously monitor aboveground biomass, we calculated a broadband normalized difference vegetation index (NDVI) based on the approach of Wilson and Meyers [2007]. Incoming (i) and reflected (r) Solar (S) and photosynthetically active radiation (PAR) measurements were converted into red and near-infrared reflectance. Solar zenith effects were removed by using data exclusively around solar noon (10 A.M.–2 P.M. EST). In our system, spring tides occurred around noon, so that simultaneous radiation measurements recorded the effect of tidal inundation at that time. A decrease in NDVI would reflect that during inundation the amount of biomass that was air exposed was smaller than under nonflooded conditions. We included this effect in our NEE model by creating two continuous time series of NDVI to simulate flooded and nonflooded conditions: NDVIall which included spring tide effects, and a reference time series, NDVIref, which represented nonflooded conditions. NEE is gap-filled with a modified PLIRTLE model (NEE=GPP+Reco), using NDVI_all, air temperature and PAR as input. GPP_all and Reco_all are estimated using the two sub-models of the PLIRTLE model. GPP_ref and Reco_ref are modelled with NDVI_ref as input variable and thus represent the fluxes occurring if no tidal inundation had occurred.
References:
Baldocchi et al. [1988]: Measuring Biosphere-Atmosphere Exchanges of Biologically Related Gases with Micrometeorological Methods. Ecology, Vol. 69, No. 5, pp. 1331-1340.
Moore [1986]: Frequency response correction s for eddy correlation systems. Boundary Layer Meteorology, Vol. 37, pp. 17-35.
Foken et al. [2012]: Corrections and Data Quality Control. In: Aubinet, Vesala, Papale (editors): Eddy covariance - a practical guide to measurement and data analysis.
Papale et al. [2006]: Towards a standardized processing of Net Ecosystem Exchange measured with eddy covariance technique: algorithms and uncertainty estimation . Biogeosciences, Vol. 3, pp. 571-583.
Forbrich, I., and A. E. Giblin (2015), Marsh-atmosphere CO2 exchange in a New England salt marsh, J. Geophys. Res. Biogeosci., 120, doi:10.1002/2015JG003044.
MAR-NE-EddyFlux-2013_csv
Eddy flux measurements during 2013 from high marsh (Spartina patens/short Spartina alterniflora) off Nelson Island Creek, Rowley, Massachusetts
MAR-NE-EddyFlux-2013_0.csv
3892240
361b02daa6eb87260092bd65a8ea089b
2c53019db4278a0567fd241d16f8aba38618096f
1
0
column
,
https://pie-lter.ecosystems.mbl.edu/sites/default/files/data/MAR-NE-EddyFlux-2013_0.csv
Date
Date
Date of measurements
date
DD-MON-YYYY
Time
Time
Timestamp of measurements (center of 30min averaging period)
date
hh:mm
zcorr
zcorr
measurement height of micromet instrumentation above surface
meter
real
NaN
PA
PA
atmospheric pressure
kilopascal
real
NaN
RH
RH
relative humidity
percent
real
NaN
Temp
Temp
air temperature
celsius
real
NaN
PAR
PAR
photosynthetic active radiation
micromolePerMeterSquaredPerSecond
real
NaN
WT
WT
water table height relative to high marsh surface
meter
real
NaN
NDVI_all
NDVI_all
Normalized difference vegetation index (NDVI) including response to inundation
number
real
NaN
NDVI_ref
NDVI_ref
Normalized difference vegetation index (NDVI) excluding response to inundation
number
real
NaN
vpd
vpd
vapor pressure deficit
hectoPascal
real
NaN
WD
WD
wind direction
degree
real
NaN
u
u
wind speed
meterPerSecond
real
NaN
umax
umax
max wind speed in averaging period
meterPerSecond
real
NaN
v_sigma
v_sigma
standard deviation in v component (after coordinate rotation)
meterPerSecond
real
NaN
u_sigma
u_sigma
standard deviation in u component (after coordinate rotation)
meterPerSecond
real
NaN
w_sigma
w_sigma
standard deviation in w component (after coordinate rotation)
meterPerSecond
real
NaN
ustar
ustar
friction velocity
meterPerSecond
real
NaN
ZL
ZL
stability parameter z/L
number
real
NaN
meanCO2
meanCO2
mean CO2 dry mixing ratio (micromole CO2 per mole of dry air)
micromolePerMole
real
NaN
meanTs
meanTs
mean sonic temperature
celsius
real
NaN
ITC
ITC
test result integral turbulence characteristics (after Foken and Wichura 1996)
percent
real
NaN
CO2_stat
CO2_stat
steady state test result for CO2
percent
real
NaN
flag_csat
flag_csat
flag for anemometer (ideal conditions=0)
number
real
NaN
flag_irga
flag_irga
flag for infrared gas analyzer (ideal conditions=0)
number
real
NaN
flag_mode
flag_mode
flag for system mode (measurement mode=1)
number
real
NaN
fp_620m
fp_620m
percent of flux originating within 620m from tower (threshold 75% used) calculated with analytical footprint model after Kormann and Meixner (2001)
percent
real
NaN
NEE_qc
NEE_qc
quality controlled CO2 flux
micromolePerMeterSquaredPerSecond
real
NaN
storage
storage
Storage CO2 flux
micromolePerMeterSquaredPerSecond
real
NaN
NEE_f
NEE_f
gap-filled CO2 flux
micromolePerMeterSquaredPerSecond
real
NaN
GPP_all
GPP_all
modelled gross primary production (as CO2) including response to inundation
micromolePerMeterSquaredPerSecond
real
NaN
Reco_all
Reco_all
modelled ecosystem respiration (as CO2) including response to inundation
micromolePerMeterSquaredPerSecond
real
NaN
GPP_ref
GPP_ref
modelled gross primary production (as CO2) assuming no response to inundation
micromolePerMeterSquaredPerSecond
real
NaN
Reco_ref
Reco_ref
modelled ecosystem respiration (as CO2) assuming no response to inundation
micromolePerMeterSquaredPerSecond
real
NaN
MAR-NE-EddyFlux-2013_xls
Excel metadata and data file associated with the csv data source file. Excel file after downloading is to be used for adding/editing new metadata and data.
MAR-NE-EddyFlux-2013.xls
9819648
8a5b3fc05e26b911ae3edc4d8654822b
c278dcdb358852801a318233bb2a7addba901a7a
application/vnd.ms-excel
https://pie-lter.ecosystems.mbl.edu/sites/default/files/data/MAR-NE-EddyFlux-2013.xls
document
SI unit of length
ratio of two quantities as percent composition (1:100)
A common unit of temperature
a number
360 degrees comprise a unit circle