搜索结果: 1-15 共查到“HESS”相关记录22条 . 查询时间(0.068 秒)
HESS: 改进的积雪反照率参数化方案在青藏高原降雪模拟中的应用研究（图）
积雪反照率 参数化方案 青藏高原 降雪模拟
2021/9/16
积雪反照率是陆面过程模式中非常重要的参数，在地表能量平衡和水循环过程中起重要作用，直接决定了地表对太阳辐射的吸收以及地表水热通量的再分配过程。但是，当前广泛使用的Noah陆面过程模式对积雪反照率的考虑不充分，尤其在模拟青藏高原降雪和融雪过程时有明显缺陷，主要表现在Noah高估了积雪反照率，导致青藏高原显著冷偏差、低融雪速率以及融雪时间滞后等模拟结果。科研人员运用MODIS反照率产品，加入“雪深”反...
HESS：水热通量相位差影响青藏高原湖泊水位季节变化（图）
水热通量相位差 青藏高原 湖泊水位 季节变化
2021/7/8
青藏高原湖泊众多，是“亚洲水塔”的重要组成部分。受气候变化影响，青藏高原内陆区大多数湖泊自90年代末出现显著扩张，但高原南部湖泊出现一定的萎缩。湖泊变化对区域生态环境产生了一定影响。由于地处偏远、气候环境恶劣，青藏高原内陆区系统的湖泊水文气象观测资料较少，限制了人们对湖泊水文过程的认识。在多年连续观测的基础上，中科院青藏高原研究所环境变化与多圈层过程团队类延斌副研究员与其合作者，通过能量平衡方法(...
动脉瘤性蛛网膜下腔出血患者血清S100B蛋白和NSE水平与Hunt-Hess分级及预后的关系
动脉瘤性蛛网膜下腔出血患者血清S100B蛋白和NSE水平与Hunt-Hess分级及预后的关系
2020/3/25
研究动脉瘤性蛛网膜下腔出血患者血清S100B蛋白和神经元特异性烯醇化酶(NSE)水平与Hunt-Hess分级及预后的关系。方法 选取2016年5月至2019年7月间梅州市人民医院神经外科诊治的动脉瘤性蛛网膜下腔出血患者60例为观察组，并选择60例健康志愿者为对照组，检测并比较所有受检者S100B蛋白及NSE的差异，并分析观察组患者S100B蛋白及NSE与Hunt-Hess分级及预后的关系。
基于Hess矩阵的多聚焦图像融合方法
多聚焦图像融合 Hess矩阵 积分图
2017/5/24
该文提出了一种基于Hess矩阵的多聚焦图像融合方法。该方法利用多尺度下的Hess矩阵检测特征和背景区域，并在此基础上，将源图像分成特征区域与非特征区域，分别采用不同的融合策略生成决策图；然后通过结合不同部分的决策图，得到初始决策图；最后采用后处理方法对初始决策图进行精化，得到最终的融合图像。为了提高融合效果，该文还提出了一种基于多尺度Hess矩阵的聚焦评价方法。同时引入积分图像进行快速计算，以满足...
VLA and XMM-Newton Observations of the SNR W41/TeV Gamma-Ray Source HESS J1834–087
W41 HESS
2014/12/23
The recently discovered extended TeV source HESS J1834-087 is associated with both a diffuse X-ray enhancement and a molecular cloud, projected at the center of an old radio supernova remnant, G23.3-0...
Hydrology and Earth System Sciences (HESS) is an international two-stage open access journal for the publication of original research in hydrology, placed within a holistic Earth System Science contex...
CANGAROO-III observation of TeV gamma rays from the unidentified gamma-ray source HESS J1614-518
CANGAROO-III observation unidentified gamma-ray source HESS J1614-518
2011/7/21
We report the detection, with the CANGAROO-III imaging atmospheric Cherenkov telescope array, of a very high energy gamma-ray signal from the unidentified gamma-ray source HESS J1614-518, which was di...
HESS Opinions: Hydrologic predictions in a changing environment: behavioral modeling
Hydrologic predictions changing environment behavioral modeling
2011/2/24
Most hydrological models are valid at most only in a few places and cannot be reasonably transferred to other places or to far distant time periods. Transfer in space is difficult because the models a...
Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622
follow-up studies off-plane VHE gamma-ray source HESS J1507-622
2010/11/30
Context: The detection of gamma-rays in the very-high-energy (VHE) range (100 GeV-100 TeV) offers the possibility of studying the parent population of ultrarelativistic particles found in astrophysica...
According to the traditional notion of randomness and uncertainty, natural phenomena are separated into two mutually exclusive components, random (or stochastic) and deterministic. Within this dichoto...
HESS Opinions On the use of laboratory experimentation:“Hydrologists,bring out shovels and garden hoses and hit the dirt”
HESS Opinions laboratory experimentation Hydrologists shovels garden hoses
2010/2/23
From an outsider's perspective, hydrology combines field work with modelling, but mostly ignores the potential for gaining understanding and conceiving new hypotheses from controlled laboratory experi...
Frank Richter earns Hess Medal for diverse spectrum of geological contributions
Frank Richter Hess Medal diverse spectrum geological contributions
2009/12/30
The University of Chicago’s Frank Richter, SM’71, PhD’72, has received the 2009 Harry H. Hess Medal for outstanding research on the constitution and evolution of Earth and its sister planets.“Frank’s ...
Associate Professor Henry Hess，The Department of Biomedical Engineering at Columbia University（图）
Associate Professor Henry Hess Engineering at the molecular scale active self-assembly protein-resistant polymer coatings
2009/12/22
Associate Professor Henry Hess，The Department of Biomedical Engineering at Columbia University.Research Areas:Engineering at the molecular scale, in particular the design of active nanosystems incorpo...
HESS Opinions “Crash tests for a standardized evaluation of hydrological models”
catchments hydrological models
2009/10/10
As all hydrological models are intrinsically limited hypotheses on the behaviour of catchments, models – which attempt to represent real-world behaviour – will always remain imperfect. To make progre...
The Nobel Prize in Physics 1936, Victor Franz Hess, for his discovery of cosmic radiation.