Infrared imaging of Venus from IRTF/ProtoCAM observations in 1991

M. Roos-Serote; V. Coupé; P. Drossart; E. Lellouch; O. Saint-Pé; Th Encrenaz

doi:10.1016/0032-0633(95)00143-3

Infrared imaging of Venus from IRTF/ProtoCAM observations in 1991

M. Roos-Serote^*
, V. Coupé
, P. Drossart
, E. Lellouch
, O. Saint-Pé
, Th Encrenaz

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Infrared observations of Venus' night-side between 3 and 5 μm provide a valuable means to study the upper cloud structure (at approximately 68 km) and the thermal structure above the clouds. New observations between 3.67 and 5.08 μm, concerning spectral images of Venus obtained in October 1991 with the ProtoCAM/IRTF and a Circular Variable Filter, are presented. A cloud particle scale height for the upper clouds of 3.9 ± 1 km is retrieved from limb darkening measurements, which is in good agreement with measurements from both space probes and Earth-based observatories. The observations show an increase in temperature from the centre towards the poles when sounding altitudes above 72 km. This, along with temperatures at cloud top levels, implies isothermal profiles between 68 and 74 km at high latitudes.

Original language	English
Pages (from-to)	509-517
Number of pages	9
Journal	Planetary and Space Science
Volume	44
Issue number	6
DOIs	https://doi.org/10.1016/0032-0633(95)00143-3
Publication status	Published - Jun 1996
Externally published	Yes

Access to Document

10.1016/0032-0633(95)00143-3

Cite this

@article{4909fd2f6b154483b0b48c24dcef3203,

title = "Infrared imaging of Venus from IRTF/ProtoCAM observations in 1991",

abstract = "Infrared observations of Venus' night-side between 3 and 5 μm provide a valuable means to study the upper cloud structure (at approximately 68 km) and the thermal structure above the clouds. New observations between 3.67 and 5.08 μm, concerning spectral images of Venus obtained in October 1991 with the ProtoCAM/IRTF and a Circular Variable Filter, are presented. A cloud particle scale height for the upper clouds of 3.9 ± 1 km is retrieved from limb darkening measurements, which is in good agreement with measurements from both space probes and Earth-based observatories. The observations show an increase in temperature from the centre towards the poles when sounding altitudes above 72 km. This, along with temperatures at cloud top levels, implies isothermal profiles between 68 and 74 km at high latitudes.",

author = "M. Roos-Serote and V. Coup{\'e} and P. Drossart and E. Lellouch and O. Saint-P{\'e} and Th Encrenaz",

year = "1996",

month = jun,

doi = "10.1016/0032-0633(95)00143-3",

language = "English",

volume = "44",

pages = "509--517",

journal = "Planetary and Space Science",

issn = "0032-0633",

publisher = "Elsevier Ltd",

number = "6",

}

TY - JOUR

T1 - Infrared imaging of Venus from IRTF/ProtoCAM observations in 1991

AU - Roos-Serote, M.

AU - Coupé, V.

AU - Drossart, P.

AU - Lellouch, E.

AU - Saint-Pé, O.

AU - Encrenaz, Th

PY - 1996/6

Y1 - 1996/6

N2 - Infrared observations of Venus' night-side between 3 and 5 μm provide a valuable means to study the upper cloud structure (at approximately 68 km) and the thermal structure above the clouds. New observations between 3.67 and 5.08 μm, concerning spectral images of Venus obtained in October 1991 with the ProtoCAM/IRTF and a Circular Variable Filter, are presented. A cloud particle scale height for the upper clouds of 3.9 ± 1 km is retrieved from limb darkening measurements, which is in good agreement with measurements from both space probes and Earth-based observatories. The observations show an increase in temperature from the centre towards the poles when sounding altitudes above 72 km. This, along with temperatures at cloud top levels, implies isothermal profiles between 68 and 74 km at high latitudes.

AB - Infrared observations of Venus' night-side between 3 and 5 μm provide a valuable means to study the upper cloud structure (at approximately 68 km) and the thermal structure above the clouds. New observations between 3.67 and 5.08 μm, concerning spectral images of Venus obtained in October 1991 with the ProtoCAM/IRTF and a Circular Variable Filter, are presented. A cloud particle scale height for the upper clouds of 3.9 ± 1 km is retrieved from limb darkening measurements, which is in good agreement with measurements from both space probes and Earth-based observatories. The observations show an increase in temperature from the centre towards the poles when sounding altitudes above 72 km. This, along with temperatures at cloud top levels, implies isothermal profiles between 68 and 74 km at high latitudes.

UR - https://www.scopus.com/pages/publications/30244443447

U2 - 10.1016/0032-0633(95)00143-3

DO - 10.1016/0032-0633(95)00143-3

M3 - Article

SN - 0032-0633

VL - 44

SP - 509

EP - 517

JO - Planetary and Space Science

JF - Planetary and Space Science

IS - 6

ER -

Infrared imaging of Venus from IRTF/ProtoCAM observations in 1991

Abstract

Access to Document

Other files and links

Fingerprint

Cite this