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风云四号C星有哪些“超强能力”
Xin Lang Cai Jing· 2025-12-27 17:39
12月27日0时07分,风云四号C星(又名风云四号03星)成功发射。作为我国第二代静止轨道气象卫星 风云四号系列的最新成员,C星在监测预警极端天气和应对气候变化方面有哪些超强能力?近期我国还 将发射哪些气象卫星?记者对此专访了中国气象局相关专家。 预警更精准超前 风云四号光学星地面系统总师陆风说,风云四号C星就位后,凭借大幅提升的观测性能,将在强对流、 台风等灾害监测预警方面更精准超前,防灾减灾能力将更强。 强对流天气监测中,风云四号C星对强对流云团的生消、移动监测时间分辨率比风云四号B星提升 33%,空间分辨率最高达250米。以我国华南地区夏季强对流为例,可提前1小时至2小时预判冰雹、短 时强降雨的落区和强度,使强对流天气的短临预警准确率提升约20%,预警提前量平均增加15分钟至30 分钟。 台风监测预警中,风云四号C星可捕捉台风内核区的温度、湿度快速变化,提前预判台风强度突变,大 幅减少台风路径和强度预报的误差,为沿海地区提前做好船只回港、人员转移等防灾部署做好"气象参 谋"。 应对气候变化能力更强 观测性能全面跃升 "最新发射的风云四号C星观测性能全面跃升,其搭载的6台载荷性能均达到国际先进水平,将大幅 ...
风云四号C星发射取得圆满成功
Xin Lang Cai Jing· 2025-12-27 12:31
在平台升级上,风云四号C星全新设计的"矢量调节机构+小推力霍尔推力器"好比手持羽扇的两条灵活的手臂,轻摇慢推,在载荷不经意间将卫星活动空间 从一个足球场大小精准压缩到小小的禁区内,实现高精度在轨自主位保和角动量卸载,精度提升10倍以上。 4台对地遥感仪器中,先进的静止轨道辐射成像仪全圆盘由15分钟缩短至5分钟,可在万里之外分辨出大气五十分之一摄氏度的变化;静止轨道干涉式红外探 测仪是国际唯一业务运行的大气探测仪器,空间分辨率由12km提升至8km,可1小时完成中国区温、湿探测;闪电成像仪一秒可拍摄500帧照片,并具有从 30Gbps的数据流中识别闪电事件的能力,这相当于1秒内播放完30部高清电影并从中找出里面的所有"红绿灯",堪称真正的"火眼金睛";多波段紫外电离层 成像仪在国内首次实现极紫外波段高光谱电离层探测。2台对日观测仪器则填补了我国静止轨道太阳监测和预报的空白。 风云四号C星发射成功后,我国已成功发射23颗风云气象卫星。静止轨道气象卫星作为气象防灾减灾第一道防线的前哨站,是全球公认的复杂、先进的航天 系统。2016年12月11日,我国新一代静止轨道气象卫星风云四号A星成功发射,以多载荷共平台的总体技 ...
覆盖大气、极地与空间天气 风云三号H星首套图发布
Yang Shi Xin Wen· 2025-10-29 03:38
Core Insights - The Fengyun-3H satellite (H satellite) has officially released its first set of images, showcasing its capabilities in atmospheric remote sensing and global observation [1][2] - H satellite is equipped with nine remote sensing instruments, six of which are currently operational, enabling it to monitor various atmospheric elements and greenhouse gases [1] - The satellite is expected to enter its operational phase in July 2026, providing global data services [3] Group 1: Atmospheric Monitoring - H satellite can perform multi-element atmospheric remote sensing, including temperature, humidity, and cloud observations, while also capturing greenhouse gas and aurora information [1] - It features a high-resolution optical imaging capability, allowing for seamless daily multi-spectral global observations [1][2] - Advanced microwave instruments, such as the microwave temperature and humidity meters, facilitate multi-band global observations, supporting numerical weather forecasting [1] Group 2: Typhoon Monitoring - The satellite utilizes advanced atmospheric vertical detection instruments to conduct a "CT scan" of the atmosphere, successfully capturing vertical temperature and humidity information of Typhoon "Maidum" [1] Group 3: Polar Observation - H satellite has a high-frequency observation capability for polar regions, with 14 daily orbits passing over the North and South Poles [2] - It provides clear images of the Antarctic ice and snow cover, and quantitatively detects polar sea ice and snow [2] Group 4: Space Weather Monitoring - The satellite is equipped with instruments for space weather monitoring, including a global navigation satellite occultation detector and an ionospheric photometer [2] - It can reconstruct the global three-dimensional electron density field, providing critical data for space weather warnings [2]