Using microwave brightness temperature diurnal cycle to improve emissivity retrievals over land" (2012). a b s t r a c t a r t i c l e i n f o Keywords: Emissivity Brightness temperature Diurnal cycle Land Passive microwave Effective temperature Vegetation Soil moisture To retrieve microwave land emissivity, infrared surface skin temperatures have been used as surface physical temperature since...

Large-scale simulation and high quality of microwave brightness temperature imaging is the key technology for passive target detection. We applied the space meshing ray tracing method for brightness temperature tracing to establish a model of tracing and inversion. Simulated images were then compared with the measured images to verify the effectiveness of the proposed method. Results showed tha...

We analyze the resolved neutral hydrogen emission properties of a sample of eleven of the nearest spiral galaxies. Between 60 and 90% of the total H I line flux within the optical disk is due to a high brightness network (HBN) of emission features which are marginally resolved in their narrow dimension at about 150 pc and have a face-on covering factor of about 15%. Averaged line profiles of th...

Wepresent results from 86GHzVLBI1 observations of 28 compact radio sources made in April 1993. All but two of the observed objects are active galactic nuclei. The remaining two objects are the galactic center Sgr A∗ and the X-ray binary starCygnusX-3.Of the observed sources, 26haveyielded fringe detections. We present correlated flux densities, estimate the maximumobserved brightness temperatur...

[1] Since mineral aerosols absorb significant amounts of infrared radiation, they may contribute to errors in the retrievals of atmospheric and surface parameters from the TIROS Operational Vertical Sounder (TOVS) High-Resolution Infrared Radiation Sounder (HIRS) if the atmosphere is assumed clear. TOVS is an operational sounder on NOAA polar satellites. To see if observed brightness temperatur...

the effect of the operating conditions (temperature, time, ph, enzyme level and pulp consistency) used in the enzymatic step of a xp (cartazyme-hydrogen peroxide) sequence for bleaching kraft pulp from bagasse on various properties of the resulting pulp and paper sheet products was studied. the quality of bagasse used, was examined by its yield, brightness,viscosity and the kappa number. finall...

In this paper we estimated the temperatures and brightnesses of the Monoceros radio loop at 1420, 820 and 408 MHz. Linear spectrum is estimated for mean temperatures versus frequency between 1420, 820 and 408 MHz. The spectral index of Monoceros loop is also obtained. The brightness temperatures and surface brightnesses of the loop are computed using data taken from radio-continuum surveys at t...

[1] To overcome the difficulties in determining the optimal parameters needed for a radiative transfer model (RTM), which acts as the observational operator in a land data assimilation system, we have designed a dual-pass assimilation (DP-En4DVar) framework to optimize the model state (volumetric soil moisture content) and model parameters simultaneously using the gridded Advanced Microwave Sca...

We developed a new method for deriving the onset date, end date, duration and spatial extent of snowmelt using satellite passive microwave measurements. Our method exploits the fact that apparent edges are present on the brightness temperature (Tb) time series curve corresponding to sharp and abrupt meltinduced transitions of brightness temperature. Through a wavelet transform of daily Tb obser...

OBJECTIVE It has been reported that working and learning efficiency might be increased through artificially controlling the color temperature and brightness of light. However, the neurological bases of these outcomes are not well established. Our study was designed to observe whether electroencephalogram (EEG) alpha frequency, as a candidate biological marker, demonstrates significant changes i...