نتایج جستجو برای: شاخص pdsi

تعداد نتایج: 74708  

2005
A. H. Taylor R. M. Beaty

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...

2012
Chi-Min Li Jia-Chyi Wu Chao-Chin Tseng

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...

Journal: :Geosciences 2022

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...

2015
Seyed-Mohammad Fereshtehnejad Mahdiyeh Shafieesabet Farzaneh Farhadi Hasti Hadizadeh Arash Rahmani Nader Naderi Dena Khaefpanah Gholam Ali Shahidi Ahmad Delbari Johan Lökk Oscar Arias-Carrion

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...

2004
T. G. F. Kittel N. A. Rosenbloom J. A. Royle C. Daly W. P. Gibson H. H. Fisher P. Thornton D. N. Yates S. Aulenbach C. Kaufman R. McKeown D. Bachelet D. S. Schimel

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 ...

Journal: :Environmental Research Letters 2021

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...

Journal: :Remote Sensing 2021

Hydroclimatic extremes such as droughts and floods triggered by human-induced climate change are causing severe damage in the Nile River Basin (NRB). These hydroclimatic not well studied a holistic approach NRB. In this study, Gravity Recovery Climate Experiment (GRACE) mission its Follow on (GRACE-FO) derived indices other standardized computed for developing monitoring evaluation methods of f...

Journal: :Atmosphere 2022

Droughts in the Yellow River Basin (YRB), a typical large river arid to semiarid regions, have been studied extensively. However, details of dynamic drivers meteorological droughts, such as precipitation (P), reference evapotranspiration (ET0), and actual (AET), are unclear YRB, is whether or not main driver drought each subzone consistent. In order solve this issue, we analyzed (1) seasonal di...

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