Publications by Fred Taylor


Semidiurnal and diurnal temperature tides (30-55 km): Climatology and effect on UARS-LIDAR data comparisons

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 101 (1996) 10299-10310

P Keckhut, ME Gelman, JD Wild, F Tissot, AJ Miller, A Hauchecorne, ML Chanin, EF Fishbein, J Gille, JM Russell, FW Taylor


Remote sensing of the Earth from space

CONTEMPORARY PHYSICS 37 (1996) 391-405

FW Taylor


Comparison of CLAES preliminary N2O5 data with correlative data and a model

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 101 (1996) 9657-9677

JB Kumer, JL Mergenthaler, AE Roche, RW Nightingale, F Zele, JC Gille, ST Massie, PL Bailey, PS Connell, MR Gunson, MC Abrams, GC Toon, B Sen, JF Blavier, SE Smith, FW Taylor


Validation of measurements of carbon monoxide from the improved stratospheric and mesospheric sounder

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 101 (1996) 9929-9955

MA LopezValverde, M LopezPuertas, JJ Remedios, CD Rodgers, FW Taylor, EC Zipf, PW Erdman


Validation of nitrogen dioxide measurements from the improved stratospheric and mesospheric sounder

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 101 (1996) 9873-9895

WJ Reburn, JJ Remedios, PE Morris, CD Rodgers, FW Taylor, BJ Kerridge, RJ Knight, J Ballard, JB Kumer, ST Massie


Validation studies using multiwavelength cryogenic limb array etalon spectrometer (CLAES) observations of stratospheric aerosol

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 101 (1996) 9757-9773

ST Massie, JC Gille, DP Edwards, PL Bailey, LV Lyjak, CA Craig, CP Cavanaugh, JL Mergenthaler, AE Roche, JB Kumer, A Lambert, RG Grainger, CD Rodgers, FW Taylor, JM Russell, JH Park, T Deshler, ME Hervig, EF Fishbein, JW Waters, WA Lahoz


STRATOSPHERIC AEROSOL EFFECTIVE RADIUS, SURFACE-AREA AND VOLUME ESTIMATED FROM INFRARED MEASUREMENTS

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 100 (1995) 16507-16518

RG GRAINGER, A LAMBERT, CD RODGERS, FW TAYLOR, T DESHLER


NONLOCAL THERMODYNAMIC-EQUILIBRIUM MODEL FOR H2O 6.3 AND 2.7-MU-M BANDS IN THE MIDDLE ATMOSPHERE

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 100 (1995) 9131-9147

M LOPEZPUERTAS, G ZARAGOZA, BJ KERRIDGE, FW TAYLOR


Regular and irregular baroclinic waves in a Martian general circulation model: A role for diurnal forcing?

ADV SPACE RES 16 (1995) 3-7

M COLLINS, SR LEWIS, PL READ

The development and evolution of baroclinic transient waves are simulated in a high resolution, general circulation model (GCM) of the Martian atmosphere, including simulations both with and without a representation of the diurnal cycle of solar heating. Simulations with diurnally-averaged insolation are found to develop highly regular baroclinic transients during northern hemisphere autumn, winter and spring seasons, characterized by zonal wavenumber 1 or 2 and periods of 2-6 sols (a sol being a Martian day). With a diurnal cycle, however, transients are found to be significantly more irregular throughout the winter season, sporadically changing their dominant wavenumber and frequency, and resemble more closely data from the Viking Lander time series. These results are discussed with reference to some simple conceptual models in nonlinear dynamics, in terms either of a periodically-perturbed, self-exciting oscillator, or of attractor-merging near a crisis in a periodically perturbed bistable system.


An operational data assimilation scheme for the Martian atmosphere

ADV SPACE RES 16 (1995) 9-13

SR LEWIS, PL READ

A meteorological data assimilation scheme has been developed for Mars, based on techniques used for the current operational scheme at the UK Meteorological Office (UKMO). The scheme has been designed to interface with a range of models of varying complexity, from a simple primitive equations model to a full martian general circulation model with detailed parameterizations of the most important physical processes. The scheme was originally intended to be used primarily for analysis of temperature profiles from the Pressure Modulator Infrared Radiometer (PMIRR) onboard the Mars Observer (MO) spacecraft. It is, however, capable of analysing any asynoptic, randomly-distributed dataset, which may include surface pressure, temperature, velocity or constituent data originating either from other past or future spacecraft missions or from models. It is proposed to use the scheme not only for interpretation of forthcoming data from future spacecraft but also for model inter-comparisons, for hind-casting earlier martian data for model validation and for data impact studies in the planning of new missions. Initial results have demonstrated successful assimilations of trial orbiter and lander data into models with different initial conditions and physics, although a large number of landers might be required if orbiter data were not available. An optimum approach would combine orbiter data with simultaneous measurements from a small number of landers.


The next generation of infrared sounders for stratospheric research

PHYS CHEM EARTH 20 (1995) 63-81

FW Taylor, JJ Barnett


Carbon monoxide in the deep atmosphere of Venus

ADV SPACE RES 16 (1995) 81-88

FW TAYLOR

The cloud structure and minor constituent distributions in the deep atmosphere of Venus observed from the Galileo spacecraft offer fascinating insights into the properties of this little-explored region of the Earth's nearest planetary neighbour. The morphology and spatial variations seen in the main mass of clouds are remarkable, and suggest a powerful and diverse meteorology dominated by convection. Carbon monoxide is significantly more abundant at high northern latitudes than at low latitudes in either hemisphere; the possible reasons for this have important implications for the atmospheric general circulation and possibly for the extent of currently active volcanism. These are explored here using simple models.


SPACE-TIME INTEGRITY OF IMPROVED STRATOSPHERIC AND MESOSPHERIC SOUNDER AND MICROWAVE LIMB SOUNDER TEMPERATURE-FIELDS AT KELVIN WAVE SCALES

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 100 (1995) 14089-14096

EM STONE, JL STANFORD, JR ZIEMKE, DR ALLEN, FW TAYLOR, CD RODGERS, BN LAWRENCE, EF FISHBEIN, LS ELSON, JW WATERS


MISSING CHEMISTRY OF REACTIVE NITROGEN IN THE UPPER STRATOSPHERIC POLAR WINTER

GEOPHYSICAL RESEARCH LETTERS 22 (1995) 2629-2632

SR KAWA, JB KUMER, AR DOUGLASS, AE ROCHE, SE SMITH, FW TAYLOR, DJ ALLEN


The thermal structure and dynamics of the atmosphere of venus between 70 and 90 km from the galileo-nims spectra

Icarus 114 (1995) 300-309

M Roos-Serote, P Drossart, T Encrenaz, E Lellouch, RW Carlson, KH Baines, FW Taylor, SB Calcutt

An analysis of thermal profiles and dynamics over a wide range of latitudes for the venusian atmosphere between 70 and 90 km is presented based on high spatial resolution infrared spectra of the night side obtained by the near infrared mapping spectrometer (NIMS) experiment during the Galileo-Venus encounter in February 1990. Using the 4.3-μm CO2absorption band, the temperature profile is retrieved in the 75- to 91-km altitude region over a latitudinal range of -59· to + 64·. Compared to earlier observations from the Pioneer Venus mission, the temperature at 91 km is about 10 K higher and between 74 and 83 km about 3.6 K colder. An equator to pole warming at constant pressure levels is found and implications for the zonal wind profiles are drawn under the assumption that the atmosphere is in cyclostrophic balance in the region of 70 to 90 km. The results are in correspondence with direct wind measurements from ground-based observations at 95 km and 105 km altitude. © 1995 Academic Press, Inc.


Global atmospheric chemistry from satellites: Results from UARS/ISAMS

FARADAY DISCUSS (1995) 353-369

FW Taylor, CD Rodgers, JJ Remedios, RG Grainger, A Lambert, M LopezValverde, M GossCustard, J Reburn

Satellites are a relatively new tool for investigating atmospheric chemical processes and their products. The precision and, in particular, the space and time coverage, now being achieved is immensely useful, and often essential, where global-scale phenomena like the variability of the stratospheric ozone layer are under study. The IR remote-sensing method using pressure modulator radiometry has recently been extended to the mapping of trace species. The technique is described, and its capabilities demonstrated with some selected new results from the improved stratospheric and mesopheric sounder (ISAMS) on the upper atmosphere research satellite (UARS). ISAMS was designed to study nitrogen-catalysed ozone chemistry, plus transport and other processes involving water vapour, methane and carbon monoxide, in the middle atmosphere. Its primary products are fields of temperature and composition, including all of the important members of the active nitrogen family, water, methane, carbon monoxide, ozone, aerosols and ice clouds. In the new data, all of these show large variations with time, height and latitude. The results have not yet been fully analysed, but early indications are that they confirm some models based on theoretical predictions and earlier, more limited, data, while in other cases they show that the situation is more complex than had been assumed. Sophisticated studies of the radiative-chemical-dynamical system in the stratosphere using satellite data and computer models are now in progress. In the future, even more advanced sensors now being built will obtain improved spatial resolution in the stratosphere, and map the global budgets of tropospheric trace gases as well.


The ORA occultation radiometer on EURECA. Instrument description and preliminary results

ADV SPACE RES 16 (1995) 33-36

E ARIJS, D NEVEJANS, D FUSSEN, P FREDERICK, E VANRANSBEECK, FW TAYLOR, SB CALCUTT, ST WERRETT, CL HEPPLEWHITE, TM PRITCHARD, I BURCHELL, CD RODGERS

A short description is given of the Occultation Radiometer which has been flown recently on the EURECA carrier. A brief outline of the scientific rationale, instrument characteristics and status of the data reduction is presented.


Characterization of the thermodynamic behaviour of pressure modulated cells for remote sensing of the atmosphere of Mars

Journal of Quantitative Spectroscopy and Radiative Transfer 52 (1994) 1-20

PGJ Irwin, SB Calcutt, FW Taylor

A radiometric experiment was conducted to investigate the thermodynamic behaviour of the H2O and CO2pressure modulated cells of the Pressure Modulator Infrared Radiometer (PMIRR) which flew on "Mars Observer" in 1992. The wave forms and phases of the transmission, emission, pressure and piston position cycles, together with the mean absorption were, for the first time, all measured during the same experiment. The measured transmission and emission cycles were used to calculate the phase and amplitude of the temperature cycles and were found to be super-adiabatic for both cells, in reasonable agreement with a thermal diffusion model. Anomalies were seen in the H2O modulator driving frequency, as has been observed by other authors, but none were evident in the measured cell wave forms suggesting that the water vapour behaves as an ideal gas in the cell. © 1994.


MEASUREMENTS OF N2O BY THE UARS IMPROVED STRATOSPHERIC AND MESOSPHERIC SOUNDER DURING THE EARLY NORTHERN WINTER 1991/92

JOURNAL OF THE ATMOSPHERIC SCIENCES 51 (1994) 2818-2833

SL RUTH, JJ REMEDIOS, BN LAWRENCE, FW TAYLOR


HIGH-RESOLUTION STRATOSPHERIC TRACER FIELDS ESTIMATED FROM SATELLITE-OBSERVATIONS USING LAGRANGIAN TRAJECTORY CALCULATIONS

JOURNAL OF THE ATMOSPHERIC SCIENCES 51 (1994) 2995-3005

RT SUTTON, H MACLEAN, R SWINBANK, A ONEILL, FW TAYLOR

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