First Spaceborne GNSS‐Reflectometry Observations of Hurricanes From the UK TechDemoSat‐1 Mission

Foti Giuseppe; Gommenginger Christine; Srokosz Meric

摘要

Abstract > We present the first examples of Global Navigation Satellite Systems‐Reflectometry (GNSS‐R) observations of hurricanes using spaceborne data from the UK TechDemoSat‐1 (TDS‐1) mission. We confirm that GNSS‐R signals can detect ocean condition changes in very high near‐surface ocean wind associated with hurricanes. TDS‐1 GNSS‐R reflections were collocated with International Best Track Archive for Climate Stewardship (IBTrACS) hurricane data, MetOp ASCAT A/B scatterometer winds, and two reanalysis products. Clear variations of GNSS‐R reflected power (σ 0 ) are observed as reflections travel through hurricanes, in some cases up to and through the eye wall. The GNSS‐R reflected power is tentatively inverted to estimate wind speed using the TDS‐1 baseline wind retrieval algorithm developed for low to moderate winds. Despite this, TDS‐1 GNSS‐R winds through the hurricanes show closer agreement with IBTrACS estimates than winds provided by scatterometers and reanalyses. GNSS‐R wind profiles show realistic spatial patterns and sharp gradients that are consistent with expected structures around the eye of tropical cyclones. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“main”XML：Lang =“en”> <title类型=“main”>抽象</ title> >我们介绍了全局导航卫星系统的第一个示例 - 反射测量测量仪（GNSS-R）观察来自英国TechDemosat-1（TDS-1）任务的飓风使用来自英国TechDemosat-1（TDS-1）的特派团。我们确认GNSS-R信号可以检测与飓风相关的高近近海风的海洋状况。 TDS-1 GNSS-R反射与气候管理（IBTRACS）飓风数据，Metop Ascat A / B散射仪风和两种重新分析产物的国际最佳轨道档案。在某些情况下，观察到GNSS-R反射功率（σ 0 </ sup>）被观察到通过飓风行进的反射，在某些情况下通过眼壁。 GNSS-R反射功率暂时倒置以使用为低至中等风力开发的TDS-1基线风检测算法估算风速。尽管如此，TDS-1 GNSS-R通过飓风的风仔细达成比散射仪和Reanalyses提供的风的估计。 GNSS-R风廓线显示了与热带气旋眼睛周围的预期结构一致的逼真的空间模式和尖锐梯度。 </ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-23539/'>《Geophysical Research Letters》</a> <b style="margin: 0 2px;">|</b><span>2017年第24期</span><b style="margin: 0 2px;">|</b><span>共9页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Foti Giuseppe&option=202" target="_blank" rel="nofollow">Foti Giuseppe;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Gommenginger Christine&option=202" target="_blank" rel="nofollow">Gommenginger Christine;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Srokosz Meric&option=202" target="_blank" rel="nofollow">Srokosz Meric;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>National Oceanography CentreSouthampton UK;</p> <p>National Oceanography CentreSouthampton UK;</p> <p>National Oceanography CentreSouthampton UK;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=tropical cyclones&option=203" rel="nofollow">tropical cyclones;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=GNSS Reflectometry&option=203" rel="nofollow">GNSS Reflectometry;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=remote sensing&option=203" rel="nofollow">remote sensing;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=TechDemoSat‐1&option=203" rel="nofollow">TechDemoSat‐1;</a> </p> <div class="translation"> 机译：热带气旋;GNSS反射计;遥感;TechDemosat-1; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" 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