← Search

Data · collection · 2009

ASCOS-60GHzScanRadar-01

Listed in NASA Earthdata CMR

ASCOS was an interdisciplinary expedition to the central Arctic on the icebreaker Oden from 1 August to 9 September 2008.

Description

The expedition focused on processes relating to cloud formation in the summer Arctic and included observations of marine biology and chemistry, atmospheric chemistry, physical oceanography, aerosol chemistry and physics, and meteorology.File ASCOS_60GHz_data_6h_v1a contains the 60 GHz scanning radiometer temperature profiles, from 30 m to 1 km and with 5-minute resolution from Aug. 1 to Sep. 16 during ASCOS.

It replaces ASCOS_60GHz_data_6h_v1 because of some minor timing and low-level errors found in latter. Only the scans from the right-hand-side of the ship are used (over the ice); those from the left-hand-side (over the bow) are not used. The retrieval technique follows Trokhimovski et al 1998 (IEEE Trans) and others and uses a linear interpolation of the 6-hourly soundings as a first guess.

Read the rest (2 more)

In the linear retrieval, a value of gamma=.05 is used. This is a compromise value to allow deviations from the first guess but to minimize the amount of spurious superadiabatic lapse rates obtained at low levels. Validations against independent sondes show root-mean-square-errors typically less than 1.0 K. Future versions of this data set will try to allow greater deviations by applying additional numerical constraints on the retrieval.

Additional information can be found in the tables in the readme file.

Links

Topics

Inferred from text
Climate change science 69%
Provenance · 1 source records, 17 field assertions
SourceKeyLast seenRaw
NASA Earthdata CMRC1214595275-SCIOPS14 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[field].anzsrc:group:3702enrichment · NASA CMRtaxonomy-embedding@1.1.0title+keywords+description (69%)
concepts[measured_variable].gcmd:earth-science/atmosphere/altitude/planetary-boundary-layer-heightsource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-temperature/atmospheric-stabilitysource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-temperature/surface-temperature/air-temperaturesource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-temperature/surface-temperature/boundary-layer-temperaturesource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-temperature/surface-temperature/potential-temperaturesource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-temperature/upper-air-temperaturesource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-temperature/upper-air-temperature/vertical-profilessource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[platform].gcmd_platform:not-providedsource · NASA CMRconnector:nasa_cmr@1.0.0
descriptionsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/Abstract
license_textsource · NASA CMRconnector:nasa_cmr@1.0.0
publication_datesource · NASA CMRconnector:nasa_cmr@1.0.0
spatialsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/SpatialExtent
temporalsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/TemporalExtents
titlesource · NASA CMRconnector:nasa_cmr@1.0.0/umm/EntryTitle
version_labelsource · NASA CMRconnector:nasa_cmr@1.0.0