搜索结果: 61-75 共查到“理学 Retrieval”相关记录100条 . 查询时间(0.104 秒)
Retrieval of upper tropospheric water vapor and upper tropospheric humidity from AMSU radiances
tropospheric water vapor tropospheric humidity AMSU radiances
2009/2/13
A regression method was developed to retrieve upper tropospheric water vapor (UTWV in kg/m2) and upper tropospheric humidity (UTH in % RH) from radiances measured by the Advanced Microwave Sounding Un...
Retrieval of CO from SCIAMACHY onboard ENVISAT: detection of strongly polluted areas and seasonal patterns in global CO abundances
SCIAMACHY onboard ENVISAT strongly polluted areas seasonal patterns global CO abundances
2009/2/11
SCIAMACHY onboard the European environmental research satellite ENVISAT is an UV/visible/near-infrared spectrometer providing 3 near infrared channels covering wavelengths from 1-1.75 µm, 1.94-2...
Total ozone retrieval from GOME UV spectral data using the weighting function DOAS approach
Total ozone retrieval GOME UV spectral data function DOAS approach
2009/2/8
A new algorithm approach called Weighting Function Differential Optical Absorption Spectroscopy (WFDOAS) is presented which has been developed to retrieve total ozone columns from nadir observations ...
A practical demonstration on AMSU retrieval precision for upper tropospheric humidity by a non-linear multi-channel regression method
AMSU retrieval precision upper tropospheric humidity non-linear multi-channel regression method
2009/2/6
A neural network algorithm inverting selected channels from the Advance Microwave Sounding Unit instruments AMSU-A and AMSU-B was applied to retrieve layer averaged relative humidity. The neural netwo...
Iterative maximum a posteriori (IMAP)-DOAS for retrieval of strongly absorbing trace gases: Model studies for CH4 and CO2 retrieval from near infrared spectra of SCIAMACHY onboard ENVISAT
(IMAP)-DOAS trace gases CH4 CO2 infrared spectra SCIAMACHY onboard ENVISAT
2009/1/23
In the past, differential optical absorption spectroscopy (DOAS) has mostly been employed for atmospheric trace gas retrieval in the UV/Vis spectral region. New spectrometers such as SCIAMACHY onboard...
Ground-based remote sensing of HDO/H2O ratio profiles: introduction and validation of an innovative retrieval approach
Ground-based remote sensing HDO/H2O ratio profiles innovative retrieval approach
2009/1/16
We propose an innovative approach for analysing ground-based FTIR spectra which allows us to detect variabilities of lower and middle/upper tropospheric HDO/H2O ratios. We show that the proposed meth...
The Heidelberg iterative cloud retrieval utilities (HICRU) and its application to GOME data
Heidelberg iterative cloud retrieval utilities HICRU GOME data
2009/1/15
Information about clouds, in particular the accurate identification of cloud free pixels, is crucial for the retrieval of tropospheric vertical column densities from space. The Heidelberg Iterative Cl...
The semianalytical cloud retrieval algorithm for SCIAMACHY II. The application to MERIS and SCIAMACHY data
semianalytical cloud retrieval algorithm MERIS SCIAMACHY
2009/1/15
The SemiAnalytical CloUd Retrieval Algorithm (SACURA) is applied to the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) data. In particular, we derive simultaneously ...
NO2 Profile retrieval using airborne multi axis UV-visible skylight absorption measurements over central Europe
NO2 Profile UV-visible skylight absorption measurements central Europe
2009/1/13
A recent development in ground-based remote sensing of atmospheric constituents by UV/visible absorption measurements of scattered light is the simultaneous use of several directions with small elevat...
Retrieval of stratospheric ozone profiles from MIPAS/ENVISAT limb emission spectra: a sensitivity study
stratospheric ozone profiles MIPAS/ENVISAT limb emission spectra sensitivity
2009/1/13
We report on the dependence of ozone volume mixing ratio profiles, retrieved from limb emission infrared spectra of the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS), on different ...
Atmospheric carbon gases retrieved from SCIAMACHY by WFM-DOAS: version 0.5 CO and CH4 and impact of calibration improvements on CO2 retrieval
Atmospheric carbon gases WFM-DOAS calibration improvements CO2 retrieval
2009/1/12
The three carbon gases carbon monoxide (CO), carbon dioxide (CO2), and methane (CH4) are important atmospheric constituents affecting air quality and climate. The near-infrared nadir spectra measured ...
The semianalytical cloud retrieval algorithm for SCIAMACHY I. The validation
semianalytical cloud retrieval algorithm SCIAMACHY I.
2009/1/8
A recently developed cloud retrieval algorithm for the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) is briefly presented and validated using independent and well t...
Water vapour profiles by ground-based FTIR spectroscopy: study for an optimised retrieval and its validation
Water vapour profiles ground-based FTIR spectroscopy optimised retrieval
2009/1/4
The sensitivity of ground-based instruments measuring in the infrared with respect to tropospheric water vapour content is generally limited to the lower and middle troposphere. The large vertical gra...
SCIAMACHY tropospheric NO2 over Switzerland: estimates of NOx lifetimes and impact of the complex Alpine topography on the retrieval
SCIAMACHY tropospheric NO2 Switzerland NOx lifetimes complex Alpine topography
2008/12/26
This study evaluates NO2 vertical tropospheric column densities (VTCs) retrieved from measurements of the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) above Switze...
Retrieval of stratospheric and tropospheric BrO profiles and columns using ground-based zenith-sky DOAS observations at Harestua, 60° N
tropospheric BrO profiles zenith-sky DOAS Harestua
2008/12/19
A profiling algorithm based on the optimal estimation method is applied to ground-based zenith-sky UV-visible measurements from Harestua, Southern Norway (60° N, 11° E) in order to retrieve BrO vertic...