Imaging · collection · 2003
Net Carbon Dioxide and Water Fluxes of Global Terrestrial Ecosystems, 1969-1998
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.3334/ornldaac/662
The variability of net surface carbon assimilation (Asmax), net ecosystem surface respiration (Rsmax), and net surface evapotranspiration (Etsmax) among and within vegetation types was examined based on a review of studies performed in either a micrometeorological setting or an enclosure setting.
Description
The majority of studies involved forests and C3 crops, particularly in the northern hemisphere; however, studies on tropical forests, C4 grasslands or wetlands were included.
Data are presented for 133 published studies, although individual studies may not have measure all variables of interest.Despite large variations within a vegetation type, enclosure studies tended to give highest Asmax rates compared to micrometeorological techniques (Buchmann and Schulze 1999). Excluding enclosure studies, the investigators tested the effect of stand age and leaf area index (LAI) on net ecosystem gas exchange.
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The results from these analyses illustrate where gaps in scientific knowledge exist and how ecosystem properties affect the capacity of net ecosystem gas exchange.The information was collected from papers with publication dates from 1969-1998. Mean maximum flux rates for the period chosen by the authors were used instead of absolute maximum values for flux rates. Positive values stand for CO2 uptake by the vegetation and negative values represent CO2 release from the ecosystem.
More information about the compilation can be found in Buchmann and Schultze (1999) or the individual studies cited in the data table.
Links
Get the data
- Data set Landing Page DOI URL doi.org/10.3334/ornldaac/662 ↗
landing page · download · DOI / persistent id · from NASA CMR, data nasa gov
- ORNL DAAC Data Set Documentation data.ornldaac.earthdata.nasa.gov/public/fluxnet/net_carbon_flux/comp/net_co2_h2o_references.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Data Set Documentation data.ornldaac.earthdata.nasa.gov/public/fluxnet/net_carbon_flux/comp/net_co2_h2o_references.txt ↗
documentation · download · from NASA CMR, data nasa gov
- Data Set Documentation data.ornldaac.earthdata.nasa.gov/public/fluxnet/net_carbon_flux/comp/net_co2_h2o_references.rtf ↗
documentation · download · from NASA CMR, data nasa gov
- Data Set Documentation data.ornldaac.earthdata.nasa.gov/public/fluxnet/net_carbon_flux/comp/CO2_buchmann.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Data Set Documentation data.ornldaac.earthdata.nasa.gov/public/fluxnet/net_carbon_flux/comp/0_DataPolicy.txt ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2779678769-ORNL_CLOUD.iso19115 ↗
download · from data nasa gov
- search.earthdata.nasa.gov /search/granules?p=C2779678769-ORNL_CLOUD ↗
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
download · from NASA CMR
- Collection Bundle URL data.ornldaac.earthdata.nasa.gov/protected/bundle/net_carbon_flux_662.zip ↗
download · from NASA CMR
- PNG daac.ornl.gov/graphics/browse/project/square/fluxnet_logo_square.png ↗
download · preview image · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/net-carbon-dioxide-and-water-fluxes-of-global-terrestr… ↗
landing page · from data nasa gov
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2779678769-ORNL_CLOUD.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=cb449f9a-ce99-4936-bf4a-6d2ef162c… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2779678769-ORNL_CLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Canopy Characteristics · Evapotranspiration · Leaf Area Index (Lai) · NOT APPLICABLE · NOT APPLICABLE · Primary Production · Respiration Rate · Vegetation Cover
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Life Sciences · Ocean & Atmospheric Science · Physics
- Inferred from text
- Greenhouse gas inventories and fluxes 78% · Tabular 65%
Provenance · 2 source records, 25 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2779678769-ORNL_CLOUD | 14 d ago | JSON v1 |
| NASA Data Portal | cb449f9a-ce99-4936-bf4a-6d2ef162c4f1 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:field:370203 | enrichment · NASA CMR | taxonomy-embedding@1.0.0 | title+keywords+description (78%) |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:not-applicable | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-water-vapor/water-vapor-processes/evapotranspiration | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecological-dynamics/ecosystem-functions/primary-production | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecological-dynamics/ecosystem-functions/respiration-rate | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/vegetation/canopy-characteristics | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/vegetation/leaf-characteristics/leaf-area-index-lai | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/vegetation/vegetation-cover | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:tabular | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[platform].gcmd_platform:not-applicable | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |