SEARCH FOR SPATIAL VARIATIONS OF THE H2O ABUNDANCE IN THE LOWER ATMOSPHERE OF VENUS FROM NIMS-GALILEO
The spectroscopic data of the Near-Infrared Mapping Spectrometer (NIMS), recorded during the Galileo flyby of Venus, are analysed to retrieve the water vapour abundance variations in the lower atmosphere of Venus at night. The 1.18 μm spectral window, which probes altitude levels below 20 km, is use...
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| פורמט: | Journal article |
| שפה: | English |
| יצא לאור: |
1993
|
| _version_ | 1826275315175915520 |
|---|---|
| author | Drossart, P Bezard, B Encrenaz, T Lellouch, E Roos, M Taylor, F Collard, A Calcutt, S Pollack, J Grinspoon, D Carlson, R Baines, K Kamp, L |
| author_facet | Drossart, P Bezard, B Encrenaz, T Lellouch, E Roos, M Taylor, F Collard, A Calcutt, S Pollack, J Grinspoon, D Carlson, R Baines, K Kamp, L |
| author_sort | Drossart, P |
| collection | OXFORD |
| description | The spectroscopic data of the Near-Infrared Mapping Spectrometer (NIMS), recorded during the Galileo flyby of Venus, are analysed to retrieve the water vapour abundance variations in the lower atmosphere of Venus at night. The 1.18 μm spectral window, which probes altitude levels below 20 km, is used for this purpose. Constraints on the CO2 continuum and far-wing opacity from existing ground-based high-resolution observations are included in the modelling of the NIMS spectra. The NIMS measurements can be fitted with a water vapour mixing ratio of 30 ± 15 ppm, in agreement with analyses of ground-based nightside observations. The water vapour abundance shows no horizontal variations exceeding 20% over a wide latitude range (40°S, 50°N) on the nightside of Venus. Within the same selection of NIMS spectra, a large enhancement in the O2 fluorescence emission at 1.27 μm is observed at a latitude of 40°S, over a spatial area about 100 km wide. © 1993. |
| first_indexed | 2024-03-06T22:56:51Z |
| format | Journal article |
| id | oxford-uuid:60b175b6-47cd-44d2-836f-5c25ddd867d0 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:56:51Z |
| publishDate | 1993 |
| record_format | dspace |
| spelling | oxford-uuid:60b175b6-47cd-44d2-836f-5c25ddd867d02022-03-26T17:54:54ZSEARCH FOR SPATIAL VARIATIONS OF THE H2O ABUNDANCE IN THE LOWER ATMOSPHERE OF VENUS FROM NIMS-GALILEOJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:60b175b6-47cd-44d2-836f-5c25ddd867d0EnglishSymplectic Elements at Oxford1993Drossart, PBezard, BEncrenaz, TLellouch, ERoos, MTaylor, FCollard, ACalcutt, SPollack, JGrinspoon, DCarlson, RBaines, KKamp, LThe spectroscopic data of the Near-Infrared Mapping Spectrometer (NIMS), recorded during the Galileo flyby of Venus, are analysed to retrieve the water vapour abundance variations in the lower atmosphere of Venus at night. The 1.18 μm spectral window, which probes altitude levels below 20 km, is used for this purpose. Constraints on the CO2 continuum and far-wing opacity from existing ground-based high-resolution observations are included in the modelling of the NIMS spectra. The NIMS measurements can be fitted with a water vapour mixing ratio of 30 ± 15 ppm, in agreement with analyses of ground-based nightside observations. The water vapour abundance shows no horizontal variations exceeding 20% over a wide latitude range (40°S, 50°N) on the nightside of Venus. Within the same selection of NIMS spectra, a large enhancement in the O2 fluorescence emission at 1.27 μm is observed at a latitude of 40°S, over a spatial area about 100 km wide. © 1993. |
| spellingShingle | Drossart, P Bezard, B Encrenaz, T Lellouch, E Roos, M Taylor, F Collard, A Calcutt, S Pollack, J Grinspoon, D Carlson, R Baines, K Kamp, L SEARCH FOR SPATIAL VARIATIONS OF THE H2O ABUNDANCE IN THE LOWER ATMOSPHERE OF VENUS FROM NIMS-GALILEO |
| title | SEARCH FOR SPATIAL VARIATIONS OF THE H2O ABUNDANCE IN THE LOWER ATMOSPHERE OF VENUS FROM NIMS-GALILEO |
| title_full | SEARCH FOR SPATIAL VARIATIONS OF THE H2O ABUNDANCE IN THE LOWER ATMOSPHERE OF VENUS FROM NIMS-GALILEO |
| title_fullStr | SEARCH FOR SPATIAL VARIATIONS OF THE H2O ABUNDANCE IN THE LOWER ATMOSPHERE OF VENUS FROM NIMS-GALILEO |
| title_full_unstemmed | SEARCH FOR SPATIAL VARIATIONS OF THE H2O ABUNDANCE IN THE LOWER ATMOSPHERE OF VENUS FROM NIMS-GALILEO |
| title_short | SEARCH FOR SPATIAL VARIATIONS OF THE H2O ABUNDANCE IN THE LOWER ATMOSPHERE OF VENUS FROM NIMS-GALILEO |
| title_sort | search for spatial variations of the h2o abundance in the lower atmosphere of venus from nims galileo |
| work_keys_str_mv | AT drossartp searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT bezardb searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT encrenazt searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT lellouche searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT roosm searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT taylorf searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT collarda searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT calcutts searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT pollackj searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT grinspoond searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT carlsonr searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT bainesk searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo AT kampl searchforspatialvariationsoftheh2oabundanceintheloweratmosphereofvenusfromnimsgalileo |