Data · collection
Concentration of 210Pb and 7Be in the Air of Tsukuba, Japan
Listed in NASA Earthdata CMR
Concentration of 210Pb and 7Be in the surface air was measured in Tsukuba Sience City (36deg. 03min.
Description
N, 140deg. 07min. E), Japan, during the period of Nov. 1987 to May 1992.
Aerosol samples were collected on glass fiber filters using a high volume air sampler. Radioactivity was determined by the gamma-ray spectrometry with an LEPS and an HPGe spectrometer. The air concentration of 210Pb and 7Be ranged from 0.2 to 0.8mBq/m3 and from 1 to 6 mBq/m3, respectively.
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Seasonal variation was observed: high concentration appeared in the spring and in the fall. Unusual and temporal increase in the concentration observed in the winter months of 1991-92 may be attributed partly to the 210Pb fallout originated from the 1991 eruption of Pinatubo volcano, Phillippines.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214586452-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214586452-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- FIXED OBSERVATION STATIONS · High Volume Air Sampler · Ozone · Precipitation Amount · SPECTROMETERS · Stratopause · Trace Elements/Trace Metals · Tropopause
- Inferred from text
- Atmospheric sciences 71%
Provenance · 1 source records, 15 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214586452-SCIOPS | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3701 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (71%) |
| concepts[instrument].gcmd_instrument:hvas | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:spectrometers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/altitude/stratopause | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/altitude/tropopause | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry/oxygen-compounds/ozone | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry/trace-elements-trace-metals | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/precipitation/precipitation-amount | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:fixed-observation-stations | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| 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 |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |