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FLUXNET Research Network Site Characteristics, Investigators, and Bibliography, 2016

Documentation Revision Date: 2017-09-28

Data Set Version: 1

Summary

FLUXNET is a global network of micrometeorological tower sites that use eddy covariance methods to measure the exchanges of carbon dioxide, water vapor, and energy between terrestrial ecosystems and the atmosphere. This dataset provides information from the ORNL DAAC-hosted FLUXNET site database which was discontinued in 2016. The files provided contain a list of investigators associated with each tower site, site locations and environmental data, and a bibliography of papers that used FLUXNET data. For more up to date information on FLUXNET sites, see http://fluxnet.fluxdata.org/.

There are nine data files with this dataset. This includes one compressed shapefile (.zip) with the locations of the sites, one compressed directory (.tar.gz) containing site data sheets, and seven comma-separated files (.csv) which provide the site locations, FLUXNET identifiers, investigator information, and bibliography.

Figure 1. Active FLUXNET sites in March 2016 and land cover from MODIS IGBP classification. Site locations, land cover, and other environmental data is provided with this dataset. This image is included as a companion file: fluxnet_MODIS_IGBP_3-2016.png

Citation

Falge, E., M. Aubinet, P.S. Bakwin, D. Baldocchi, P. Berbigier, C. Bernhofer, T.A. Black, R. Ceulemans, K.J. Davis, A.J. Dolman, A. Goldstein, M.L. Goulden, A. Granier, D.Y. Hollinger, P.G. Jarvis, N. Jensen, K. Pilegaard, G. Katul, P. Kyaw Tha Paw, B.E. Law, A. Lindroth, D. Loustau, Y. Mahli, R. Monson, P. Moncrieff, E. Moors, J.W. Munger, T. Meyers, W. Oechel, E.-D. Schulze, H. Thorgeirsson, J. Tenhunen, R. Valentini, S.B. Verma, T. Vesala, and S.C. Wofsy. 2017. FLUXNET Research Network Site Characteristics, Investigators, and Bibliography, 2016. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1530

Table of Contents

  1. Data Set Overview
  2. Data Characteristics
  3. Application and Derivation
  4. Quality Assessment
  5. Data Acquisition, Materials, and Methods
  6. Data Access
  7. References

Data Set Overview

FLUXNET is a global network of micrometeorological tower sites that use eddy covariance methods to measure the exchanges of carbon dioxide, water vapor, and energy between terrestrial ecosystems and the atmosphere. This dataset provides information from the ORNL DAAC-hosted FLUXNET site database which was discontinued in 2016. The files provided contain a list of investigators associated with each tower site, site locations and environmental data, and a bibliography of papers that used FLUXNET data. For more up to date information on FLUXNET sites, see http://fluxnet.fluxdata.org/. 

Project: FLUXNET

Related Dataset: The following dataset contains an archived copy of the ORNL DAAC's Fluxnet Website as of September 2017. It provides much of the same information contained in this dataset.

ORNL DAAC. 2017. Fluxnet: Archived Website Including Site and Investigator Information. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1549 

Data Characteristics

Spatial Coverage: Fluxnet sites around the world

Spatial Resolution: Point locations

Temporal Coverage: Data covers 1991-01-01 to 2016-12-31

Temporal Resolution: Various

Study Area  (All latitudes and longitudes are given in decimal degrees)

Site Westernmost Longitude Easternmost Longitude Northernmost Latitude Southernmost Latitude
FLUXNET sites -157.409 175.553889 78.921631 -62. 232115

 

Data file information

There are nine data files with this dataset. This includes one compressed shapefile (.zip) with the locations of the sites, one compressed directory (.tar.gz) containing site data sheets, and seven comma-separated files (.csv). Sixteen companion files, including the shapefile data in .kmz (Google Earth) format, are also provided.

Table 1. Data file names and descriptions.

File name Description
fluxnet_sites.zip Compressed shapefile (.shp) that provides site locations and environmental data
fluxnet_site_investigators.csv Provides site IDs and ID numbers of the investigators for each site
fluxnet_site_info_all.csv Provides location information
fluxnet_site_info.csv Provides names, location, and site descriptions
fluxnet_site_data.csv Provides site environmental data
fluxnet_mapbooks.tar.gz Compressed directory containing 1,407 site data sheets in .png format. The data sheets provide location maps and overview of environmental conditions at each fluxnet site.
fluxnet_investigators.csv Provides a list of investigators, by investigator ID, with contact information
fluxnet_calculated_data.csv Provides a list of data variables for each site
fluxnet_bibliography_20160729.csv Provides a bibliography of publications that used Fluxnet data from each site

 

Shapefile

The shapefile (.shp) is provided in fluxnet_sites.zip. The following information is provided in the file. 

siteid Internal database identifier for each site
fluxnetid Site ID within the Fluxnet network
keyid Unknown definition
sitename Human readable site name
country Country location of site
land_unit Region location of site
status Active/inactive status of site as of 2016-03-01
latitude Latitude coordinate
longitude Longitude coordinate
year_began Year the site started collecting data within the FLUXNET framework
network1 Current site network
network2 Previous site network
network3 Other previous site network
koeppen_cl Koppen-Geiger climate classification
igbp_land_ Site land cover (MODIS IGBP classification)
umd_land_c Site land cover (MODIS UMD classification)
lai_fpar Site land cover (MODIS LAI/fpar classification)
npp_land_c Site land cover (MODIS NPP classification)
plant_func Unknown definition

 

Comma-separated files (.csv)

There are seven comma-separated files (.csv) included in this dataset. Each file and its contents are listed below.

Table 2. Contents of the file fluxnet_site_data.csv

Column name Units/format Description
siteid   FLUXNET site ID
data_type_id    
record_date yyyy-mm-dd  
value   Landcover type-grassland, cropland, etc
source   Source of data
display   TRUE or FALSE
start_date yyyy-mm-dd Date site became active
end_date yyyy-mm-dd Date site became inactive

 

Table 3. Contents of the file fluxnet_site_info_all.csv

Column name Units/format Description
siteid   FLUXNET numeric site ID
fluxnetid   FLUXNET site ID
keyid   Combination of site ID and country location
sitename   FLUXNET site name
countryid   Country where FLUXNET site is located
land_unit   Region-location of FLUXNET site-North America, South America, Europe, Asia, Australia, Africa
staus   Staus of site=Acitve or Inactive
latitude Decimal degrees Latitude of site
longitude Decimal degrees Longitude of site
year_began yyyy Year site became active
network1   Current FLUXNET network affiliation or null
network2   Previous FLUXNET network affiliation
network3   Other prior FLUXNET network affiliation
koeppen_climate   Koppen-Geiger climate classification
igbp_land_use   Site land cover (MODIS IGBP classification)
umd_land_cover   Site land cover (MODIS UMD classification)
lai_fpar   Site land cover (MODIS LAI/fPAR classification)
npp_land_cover   Site land cover (MODIS NPP classification)
plant_functional_type   Plant functional type surrounding site
network1_id   Current FLUXNET network ID
year_began   Year the site started collecting data within the FLUXNET framework

 

Table 4. Contents of the file fluxnet_site_info.csv

Column name Description
siteid FLUXNET numeric site ID
sitename FLUXNET site name
stateid State where site is located or (null)
countryid Country where FLUXNET site is located
keyid Combination of site ID and country location
description Description of the FLUXNET site location

 

Table 5. Contents of the file fluxnet_investigators.csv

This file provides contact information pertaining to the FLUXNET investigators and their affiliated FLUXNET site IDs.

Column name
siteid
firstname
middlename
lastname
title
position
description
Phone
Fax
Email
institution
Address1
Address2
Address3
investigator_url
comments

 

Table 6. Contents of the file fluxnet_site_investigators.csv

Column name Units/format Description
siteid FLUXNET numeric site ID FLUXNET numeric site ID
investigatorid   Investigator ID number
start_date yyyy-mm-dd start of time associated with this site
pi   Principal Investigator=yes or no
end_date yyyy-mm-dd  
comments    
display_order Numeric  

 

Table 7. Contents of the file fluxnet_calculated_data.csv. Climate and other ancillary data for each site was gathered from various sources and used to create Figure 2 and several other plots included as companion files.

Column name Description
myid2 Investigator ID
lastname Last name of investigator
firstname First name of investigator
modis_file Modis file
ceip_code Combined FLUXNET site ID code with network
pnet Network
siteid FLUXNET site ID
keyid  
network FLUXNET network
site_type  
status Active or inactive
year_began Year site became active
sitename FLUXNET site name
country Country where FLUXNET site is located
state State where FLUXNET site is located
land_unit Region location of FLUXNET site
latitude Latitude of FLUXNET site
longitude Longitude of FLUXNET site
cluster  
evapck Evaporation
evap Evaporation
precck Precipitation
prec Precipitation
tprec Precipitation
sunck  
usn  
maxtck Maximum temperature
maxt Maximum temperature
mintck Minimum temperature
mint Minimum temperature
mmt  
vp Vapor
ws  
igbp Site land cover (MODIS IGBP classification)
umd Site land cover (MODIS UMD classification)
lai_fpar Site land cover (MODIS LAI/fPAR classification)
npp Site land cover (MODIS NPP classification) code
ppt Site land cover code
elev Elevation
koeppen Koppen-Geiger climate classification code
myid  
igbp_def Site land cover code (MODIS IGBP classification) and definition 
umd_def Site land cover code (MODIS UMD classification) and definition
laif_def Site land cover (MODIS LAI/fPAR classification) and definition
npp_def Site land cover (MODIS NPP classification) code and definition
ppt_def Site land cover code and definition
kop_def Koppen-Geiger climate classification code definition

 

fluxnet site climate

Figure 2: Calculated mean annual temperature and total annual precipitation for all active Fluxnet sites (blue diamonds; as of March 2016) as compared to the climatic regimes of one-degree grid cells for the Earth's land surface area. This image is included as a companion file: fluxnet_Climate.png.

 

Table 8. The file fluxnet_bibliography_20160729.csv contains a list of publications that used FLUXNET program data. Each paper is associated with one or more sites.

Column name
site
authors
title
year
journal
issue
pages
DOI

 

Site data sheets (mapbooks)

fluxnet_mapbooks.tar.gz

When uncompressed, this file contains 1,407 site data sheets in .png format showing a variety of environmental conditions at each fluxnet site. The individual files are named by the fluxnet site ID. See Fig 3 for an example.

 

conditions at the Adelaide River site

Figure 3: An example of the site data sheets, or mapbooks, provided for each site. This data sheet shows climate, land cover, and topography for the Adelaide River site (ID 2856) in Australia.

Companion files

Table 9. There are 16 companion files provided and each is described below.

Companion file name Description
fluxnet_UMDLandcover_3-2016_ShadedPoints.png Global map of FLUXNET sites with locations shaded per UMD landcover classification
fluxnet_UMDLandcover_3-2016.png Global map of FLUXNET sites overlaid on the UMD landcover classification
fluxnet_Topo_3-2016.png Global map of FLUXNET sites overlaid on elevation
fluxnet_Temp_Precip_Lat.png Distribution charts of temperature, precipitation, and latitude of Fluxnet sites compared to the global land surface
fluxnet_sites.kmz The shapefile data described above provided in .kmz format for viewing in Google Earth
fluxnet_MODIS_IGBP_3-2016_ShadedPoints.png Global map of FLUXNET sites with locations shaded per IGBP landcover classification
fluxnet_MODIS_IGBP_3-2016.png Global map of FLUXNET sites overlaid on the IGBP landcover classification
fluxnet_landcover_proportions.png A bar graph illustrating the landcover types represented by all FLUXNET sites
fluxnet_LAI_3-2016_ShadedPoints.png Global map of FLUXNET sites with locations shaded per LAI/fPAR landcover classification
fluxnet_LAI_3-2016.png Global map of FLUXNET sites overlaid on LAI/fPAR landcover classification
fluxnet_Koppen_3-2016.png Global map of FLUXNET sites overlaid on Koppen-Geiger Climate Classification
fluxnet_Climate.png Calculated mean annual temperature and total annual precipitation for all active Fluxnet sites (blue diamonds; as of March 2016) as compared to the climatic regimes of one-degree grid cells for the Earth's land surface area. Figure 2 above.
fluxnet_tower_sites_201404.jpg Chart of the growth of the number of FLUXNET towers from 1991 to 2014
fluxnet_Networks_3-2016.png Global map of FLUXNET sites with locations shaded by the regional network affiliation
Fluxnet_site_DB_Fig1.png Figure 1 from above
Fluxnet_site_DB.pdf A pdf copy of this guide document

Application and Derivation

The FLUXNET site database is useful for understanding the historical coverage of flux towers globally and as a resource for related publications.

Quality Assessment

These data are provided with no guarantee of accuracy. Data in fluxnet_calculated_data.csv are especially subject to error. This data has not been maintained or updated since March 2016. For the most up to date information, see the Fluxnet project database at http://fluxnet.fluxdata.org/ .

Data Acquisition, Materials, and Methods

These data were gathered from the FLUXNET site data base hosted at the ORNL DAAC. Site, bibliography, and investigator information were updated on a rolling basis during the project, but support was discontinued in 2016. The accompanying website is also archived at ORNL DAAC in the following dataset: 

ORNL DAAC. 2017. Fluxnet: Archived Website Including Site and Investigator Information. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1549 

Data Access

These data are available through the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).

FLUXNET Research Network Site Characteristics, Investigators, and Bibliography, 2016

Contact for Data Center Access Information:

References