Spatially-resolved spectroscopy at 1.6 μm of titan's atmosphere and surface

M. Ádámkovics; I. de Pater; H. G. Roe; S. G. Gibbard; C. A. Griffith

doi:10.1029/2004GL019929

Spatially-resolved spectroscopy at 1.6 μm of titan's atmosphere and surface

M. Ádámkovics, I. de Pater, H. G. Roe, S. G. Gibbard, C. A. Griffith

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

17 Scopus citations

Abstract

We present spatially-resolved, low-resolution (λ/Δλ ∼ 1,500) spectroscopy of the leading hemisphere of Titan in the H-band (1.5-1.7 μm) using adaptive optics. Spatial variations of Surface albedo are observed in images at 1.55-1.57 μm, which are clearly distinct from stratospheric haze. There is a significant increase in albedo around the southern (summer) pole at 1.62 μm. Using a plane-parallel radiative transfer model to fit the observed spectra, we find a 61% increase in tropopause haze opacity (τ = 0.100 from 30-40 km) around the southern pole relative to the rest of the disk (where τ - 0.062 from 30 40-_km).

Original language	English (US)
Pages (from-to)	L17S05 1-4
Journal	Geophysical Research Letters
Volume	31
Issue number	17
DOIs	https://doi.org/10.1029/2004GL019929
State	Published - Sep 16 2004

Keywords

0305 Atmospheric composition and structure: Aerosols and particles (0345, 4801)
0317 Atmospheric composition and structure: Chemical kinetic and photochemical properties
0320 Atmospheric composition and structure: Cloud physics and chemistry
0343 Atmospheric composition and structure: Planetary atmospheres (5405, 5407, 5409, 5704, 5705, 5707)
5494 Planetology: Solid surface planets: Instruments and techniques

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

Access to Document

10.1029/2004GL019929

Cite this

@article{263385a265164b16ae917a0ba4287581,

title = "Spatially-resolved spectroscopy at 1.6 μm of titan's atmosphere and surface",

abstract = "We present spatially-resolved, low-resolution (λ/Δλ ∼ 1,500) spectroscopy of the leading hemisphere of Titan in the H-band (1.5-1.7 μm) using adaptive optics. Spatial variations of Surface albedo are observed in images at 1.55-1.57 μm, which are clearly distinct from stratospheric haze. There is a significant increase in albedo around the southern (summer) pole at 1.62 μm. Using a plane-parallel radiative transfer model to fit the observed spectra, we find a 61% increase in tropopause haze opacity (τ = 0.100 from 30-40 km) around the southern pole relative to the rest of the disk (where τ - 0.062 from 30 40-_km).",

keywords = "0305 Atmospheric composition and structure: Aerosols and particles (0345, 4801), 0317 Atmospheric composition and structure: Chemical kinetic and photochemical properties, 0320 Atmospheric composition and structure: Cloud physics and chemistry, 0343 Atmospheric composition and structure: Planetary atmospheres (5405, 5407, 5409, 5704, 5705, 5707), 5494 Planetology: Solid surface planets: Instruments and techniques",

author = "M. {\'A}d{\'a}mkovics and {de Pater}, I. and Roe, {H. G.} and Gibbard, {S. G.} and Griffith, {C. A.}",

year = "2004",

month = sep,

day = "16",

doi = "10.1029/2004GL019929",

language = "English (US)",

volume = "31",

pages = "L17S05 1--4",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "American Geophysical Union",

number = "17",

}

TY - JOUR

T1 - Spatially-resolved spectroscopy at 1.6 μm of titan's atmosphere and surface

AU - Ádámkovics, M.

AU - de Pater, I.

AU - Roe, H. G.

AU - Gibbard, S. G.

AU - Griffith, C. A.

PY - 2004/9/16

Y1 - 2004/9/16

N2 - We present spatially-resolved, low-resolution (λ/Δλ ∼ 1,500) spectroscopy of the leading hemisphere of Titan in the H-band (1.5-1.7 μm) using adaptive optics. Spatial variations of Surface albedo are observed in images at 1.55-1.57 μm, which are clearly distinct from stratospheric haze. There is a significant increase in albedo around the southern (summer) pole at 1.62 μm. Using a plane-parallel radiative transfer model to fit the observed spectra, we find a 61% increase in tropopause haze opacity (τ = 0.100 from 30-40 km) around the southern pole relative to the rest of the disk (where τ - 0.062 from 30 40-_km).

AB - We present spatially-resolved, low-resolution (λ/Δλ ∼ 1,500) spectroscopy of the leading hemisphere of Titan in the H-band (1.5-1.7 μm) using adaptive optics. Spatial variations of Surface albedo are observed in images at 1.55-1.57 μm, which are clearly distinct from stratospheric haze. There is a significant increase in albedo around the southern (summer) pole at 1.62 μm. Using a plane-parallel radiative transfer model to fit the observed spectra, we find a 61% increase in tropopause haze opacity (τ = 0.100 from 30-40 km) around the southern pole relative to the rest of the disk (where τ - 0.062 from 30 40-_km).

KW - 0305 Atmospheric composition and structure: Aerosols and particles (0345, 4801)

KW - 0317 Atmospheric composition and structure: Chemical kinetic and photochemical properties

KW - 0320 Atmospheric composition and structure: Cloud physics and chemistry

KW - 0343 Atmospheric composition and structure: Planetary atmospheres (5405, 5407, 5409, 5704, 5705, 5707)

KW - 5494 Planetology: Solid surface planets: Instruments and techniques

UR - http://www.scopus.com/inward/record.url?scp=9744240172&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=9744240172&partnerID=8YFLogxK

U2 - 10.1029/2004GL019929

DO - 10.1029/2004GL019929

M3 - Article

AN - SCOPUS:9744240172

SN - 0094-8276

VL - 31

SP - L17S05 1-4

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 17

ER -

Spatially-resolved spectroscopy at 1.6 μm of titan's atmosphere and surface

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this