نتایج جستجو برای: مدل lst
تعداد نتایج: 121998 فیلتر نتایج به سال:
BACKGROUND Land surface temperature (LST) and percent surface imperviousness (SI), both derived from satellite imagery, have been used to characterize the urban heat island effect, a phenomenon in which urban areas are warmer than non-urban areas. OBJECTIVES We aimed to assess the correlations between LSTs and SI images with actual temperature readings from a ground-based network of outdoor m...
The total atmospheric water vapor content (TAWV) and land surfacetemperature (LST) play important roles in meteorology, hydrology, ecology and some otherdisciplines. In this paper, the ENVISAT/AATSR (The Advanced Along-Track ScanningRadiometer) thermal data are used to estimate the TAWV and LST over the Loess Plateauin China by using a practical split window algorithm. The distribution of the T...
The land surface temperature (LST) represents a critical element in efforts to characterize global surface energy and water fluxes, as well as being an essential climate variable in its own right. Current satellite platforms provide a range of spatial and temporal resolution radiance data from which LST can be determined. One of the most complete records of data comes via the Landsat series of ...
A wide range of environmental applications require the monitoring of land surface temperature (LST) at frequent intervals and fine spatial resolutions, but these conditions are not offered nowadays by the available space sensors. To overcome these shortcomings, LST downscaling methods have been developed to derive higher resolution LST from the available satellite data. This research concerns t...
[1] Three radiative transfer equations are built for MODIS bands 29, 31, and 32, which involve six unknown parameters (average atmospheric temperature, land surface temperature (LST), three band emissivities, and water vapor content). The relationships between geophysical parameters have been analyzed in detail, which indicates that neural network is one of the best methods to resolve these ill...
Examining climate-related satellite data that strongly relate to seasonal phenomena requires appropriate methods for detecting the seasonality to accommodate different temporal resolutions, high signal variability and consecutive missing values in the data series. Detection of satellite-based Land Surface Temperature (LST) seasonality is essential and challenging due to missing data and noise i...
An assay procedure to screen for Escherichia coli in foods by using 4-methylumbelliferyl-beta-D-glucuronide (MUG) incorporated into lauryl tryptose (LST) broth was evaluated. The beta-glucuronidase produced by E. coli cleaves the MUG substrate to yield a fluorescent end product. E. coli-negative samples can be identified by lack of fluorescence in LST-MUG within 24 h. MUG was not inhibitory to ...
رطوبت خاک سطحی، متغیری مهم در چرخ? آبی طبیعت است که نقش مهمی در تعادل جهانی آب و انرژی به واسطه تاثیر بر فرآینده های هیدرولوژک، اکولوژیک، هواشناسی، ژئومورفولوژیک و دیگر فرآیندهای طبیعی دارد. رطوبت خاک تا حد زیادی در مکان و زمان به دلیل ویژگی های گوناگون خاک، ویژگی های توپوگرافی، ویژگی های پوشش گیاهی و پویایی نیوار تغییر می کند. رطوبت خاک همچنین به طور مستقیم با استفاده از روش های درجا مانند نوت...
The aim of this study is to retrieve land surface temperature (LST), air temperature (AT) and precipitation and to study their relationship with vegetation in rang lands of Karun watershed of Khuzestan province. For this purpose, land surface temperature (LST) and NDVI was drived from NOAA-AVHRR for maximum amount of greenness (April) for a period of 27 years. In order to extract LST, Price alg...
BACKGROUND AND OBJECTIVES The antihypertensive efficacy and tolerability of losartan (LST) in fixed combination with hydrochlorothiazide (HCTZ) has not been compared to those of amlodipine monotherapy in Asians. This is an important comparison to draw, because Asians have been suggested to respond more favorably to calcium channel blockers and less favorably to angiotensin-converting enzyme inh...
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