نتایج جستجو برای: pdsi
تعداد نتایج: 213 فیلتر نتایج به سال:
Abstract This paper focuses on the environment of Ethiopia, a country highly sensitive to droughts severely affecting vegetation. Vegetation monitoring Ethiopian Highlands requires visualization environmental parameters assess negatively influencing agricultural sustainable management crops. Therefore, this study presented mapping several climate and variables including Palmer Drought Severity ...
Drought can cause severe agricultural economic losses and hinder social development. To manage drought, the process of drought events needs to be described with help an effective indicator. As a comprehensive variable, soil moisture is essential indicator for describing drought. In this work, extreme in southwest China were analysed by Global Land Data Assimilation System (GLDAS) root zone data...
Methods Pre-EuroAmerican settlement fire regimes (i.e. frequency, return interval, extent, season) were reconstructed in eight contiguous watersheds for a 200-year period (1650–1850) from fire scars preserved in the annual growth rings of nineteenth century cut stumps and recently dead pre-settlement Jeffrey pine trees. Superposed epoch analysis (SEA) and correlation analysis were used to exami...
OFDM (Orthogonal Frequency Division Multiplexing) technique has been widely adopted in many wireless communication systems due to its high data-rate transmission ability and robustness to the multipath fading channel. One major drawback of the OFDM signal is the high peak-toaverage power ratio (PAPR) problem. The high PAPR results in the in-band distortion and out-of-band radiation when the OFD...
This paper explores spatial variability of the ten climatic variables Mongolia in 2019: average minimal and maximal temperatures, wind speed, soil moisture, downward surface shortwave radiation (DSRAD), snow water equivalent (SWE), vapor pressure deficit (VPD), anomaly (VAP), monthly precipitation Palmer Drought Severity Index (PDSI). The PDSI demonstrates simplified balance estimating relative...
OBJECTIVES Health-related quality of life (HRQoL) is considered a very important outcome indicator in patients with Parkinson's disease (PD). A broad list of motor and non-motor features have been shown to affect HRQoL in PD, however, there is a dearth of information about the complexity of interrelationships between determinants of HRQoL in different PD phenotypes. We aimed to find independent...
Analysis and simulation of biospheric responses to historical forcing require surface climate data that capture those aspects of climate that control ecological processes, including key spatial gradients and modes of temporal variability. We developed a multivariate, gridded historical climate dataset for the conterminous USA as a common input database for the Vegetation/Ecosystem Modeling and ...
Abstract Larch trees are widely used in afforestation and timber plantations. Yet, little is known on how planted larch cope with increasing drought. We a tree-ring network of 818 from 31 plantations spanning most the distribution Larix principis-rupprechtii to investigate extreme drought influences radial growth northern China. found that summer drought, rather than temperature or precipitatio...
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