Results 21 to 30 of about 65,480 (298)

A feasible method on atmospheric correction to channel 1 and 2 for MODIS(MODIS通道1和通道2大气订正的一种快速实用方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2004
提出了利用气象资料对MODIS影像进行大气校正的一种快速实用方法.读取MODIS前两个通道250 min的反射率,采用常用的黑色目标扣除法(Dark-object subtraction)计算天空程辐射,通过卫星过境时刻的气象能见度和水汽资料计算大气造过率,表后推导出目标物的反射率. 通过比较两个邻近日期MODIS影像校正前后的归一化植被指数(NDVI)值,得出利用本文提出的方法对MODIS进行大气校正所得到的NDVI值更接近实际情况.
CHENGQian(程乾)   +3 more
doaj   +1 more source

پهنه‌بندی خطر سرمازدگی در مراحل مختلف رشد برنج (.Oryza sativa L) با استفاده از داده‌های ماهواره‌ای [PDF]

open access: yesتنش های محیطی در علوم زراعی
پدیده سرمازدگی منجر به خسارات جبران‌ناپذیری به شالیزارهای استان گیلان می‌شود. در کشورهای درحال‌توسعه مانند ایران، ایستگاه‌های هواشناسی معمولاً پراکنده هستند به همین دلیل از سنجنده و حسگرهایی مانند MODIS که به‌صورت رایگان در دسترس هستند استفاده می‌کنند که
لیلا صدوقی   +3 more
doaj   +1 more source

ارتباط شاخص‌های پوشش گیاهی با رخداد آتش‌‌سوزی در نواحی رویشی ایران [PDF]

open access: yesجغرافیا و مخاطرات محیطی
مخاطره آتش­سوزی در ایران به‌طور فزاینده­ای به یک ریسک جدی در طول سال تبدیل‌شده و محدود به چند ماه از سال نیست؛ بر این اساس پایش جنگل­ها برای شناسایی و تعیین نواحی مستعد رخداد آتش­سوزی­ها گامی مؤثر برای توسعه سامانه­های هشدار سریع است.
کبری شجاعی زاده   +2 more
doaj   +1 more source

Investigation of dust storms effect on vegetation cover of Shadegan wetland [PDF]

open access: yesمحیط زیست و مهندسی آب, 2021
Investigating and understanding the impact of dust storms on wetland vegetation changes can lead to useful information for their optimal management. In this study, the wind rose and hurricane rose diagrams of the research area were prepared using wind ...
Reza Bayat   +2 more
doaj   +1 more source

The Thar, Rajputana desert unprecedented rainfall in 2006 and 2010: effect of climate change?

open access: yesGeofísica Internacional, 2011
En agosto de 2006 la región de Rajasthan registró lluvias excepcionalmente intensas que provocaron severas inundaciones. También, en la temporada del monzón de 2010 Rajasthan recibió fuertes lluvias, aunque no superiores a las de agosto de 2006. Pero los
Vadlamudi Brahmananda Rao   +5 more
doaj   +1 more source

Quality of life assessment in patients with HNF1A-MODY and GCK-MODY [PDF]

open access: yesEndocrine, 2018
Abstract Aim The impact of maturity onset diabetes of the young (MODY) on quality of life (QoL) has never been examined. We assessed disease impact on QoL among patients with HNF1A-MODY and GCK mutation carrier status. Methods The study included 80 patients with HNF1A-MODY
Magdalena Szopa   +11 more
openaire   +3 more sources

Seasonal Adaptation of the Thermal-Based Two-Source Energy Balance Model for Estimating Evapotranspiration in a Semiarid Tree-Grass Ecosystem

open access: yesRemote Sensing, 2020
The thermal-based two-source energy balance (TSEB) model has accurately simulated energy fluxes in a wide range of landscapes with both remote and proximal sensing data.
Vicente Burchard-Levine   +7 more
doaj   +1 more source

A New Set of MODIS Land Products (MCD18): Downward Shortwave Radiation and Photosynthetically Active Radiation

open access: yesRemote Sensing, 2020
Surface downward shortwave radiation (DSR) and photosynthetically active radiation (PAR), its visible component, are key parameters needed for many land process models and terrestrial applications.
Dongdong Wang   +5 more
doaj   +1 more source

When is it MODY? Challenges in the Interpretation of Sequence Variants in MODY Genes [PDF]

open access: yesThe Review of Diabetic Studies, 2015
The genomics revolution has raised more questions than it has provided answers. Big data from large population-scale resequencing studies are increasingly deconstructing classic notions of Mendelian disease genetics, which support a simplistic correlation between mutational severity and phenotypic outcome.
Althari, S, Gloyn, A
openaire   +3 more sources

Estimation of Forest Fire Emissions in Southwest China from 2013 to 2017

open access: yesAtmosphere, 2019
Forest fire emissions have a great impact on local air quality and the global climate. However, the current and detailed regional forest fire emissions inventories remain poorly studied.
Wenjia Wang   +4 more
doaj   +1 more source

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