نتایج جستجو برای: سنجندۀ avhrr
تعداد نتایج: 1388 فیلتر نتایج به سال:
The 40+ years-long sea surface temperature (SST) dataset from 4 km Global Area Coverage (GAC) data of the Advanced Very High-Resolution Radiometers (AVHRR/2s and/3s) flown onboard ten NOAA satellites (N07/09/11/12/14/15/16/17/18/19) has been created under AVHRR GAC SST Reanalysis 2 (RAN2) Project. were reprocessed with Clear Sky Processor for Ocean (ACSPO) enterprise system. Two products are re...
The large archive of NOAA AVHRR data, covering more than 25 years, bears the potential to detect aerosol trends. However, remote sensing of aerosol optical depth over land is a difficult task, because the aerosol signal gets weaker over bright surface targets and the quality of the retrieval mainly depends on the quality of the surface reflectance estimate. In this study, we test the sensitivit...
Leaf area index (LAI) is one of the surface parameters that has importance in climate, weather, and ecological studies, and has been routinely estimated from remote sensing measurements. Canada-wide LAI maps are now being produced using cloud-free Advanced Very High-Resolution Radiometer (AVHRR) imagery every 10 days at 1-km resolution. The archive of these products began in 1993. LAI maps at t...
A multispectral, multiresolution (MSMR) method is developed for analyzing scenes of overlapping cloud layers. The MSMR method is applied to data from the NOAA 11 advanced very high resolution radiometer (AVHRR) and the high-resolution infrared radiometer sounder (HIRS-2). The data are from a nighttime oceanic scene in which a semitransparent cirrus veil overlays a large-scale stratus cloud. Low...
در این مطالعه به بررسی کارایی سه شاخص ناپایداری tt، l و k بهدستآمده از تصاویر سنجندۀ مادیس در ایستگاه هواشناسی ارومیه پرداخته شده است. با توجه به این موضوع که هستۀ بیشینۀ بارش بهاره در آذربایجان قرار دارد، از ایستگاه ارومیه در این مطالعه استفاده شد. مهارت پیشبینی هر یک از این شاخصهای ناپایداری، بر اساس آستانۀ هر شاخص و بهکمک جدول احتمال رویداد و پارامترهای امتیازدهی مانند هایدک (hss) مور...
Remote sensing image composites are crucial for a wide range of remote applications, such as multi-decadal time series analysis. The Advanced Very High Resolution Radiometer (AVHRR) instrument has provided daily data since the early 1980s at spatial resolution 1 km, allowing analyses climate change-related environmental processes. For monitoring vegetation conditions, Normalized Difference Vege...
Abstract. A long-term Advanced Very High Resolution Radiometer (AVHRR) snow cover extent (SCE) product from 1981 until 2019 over China has been generated by the research team in Northwest Institute of Eco-Environment and Resources (NIEER), Chinese Academy Sciences. The NIEER AVHRR SCE a spatial resolution 5 km daily temporal resolution, it is completely gap-free product, which produced through ...
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