ISRO Successfully Launches NISAR, World's 'first-of-its-kind' Satellite | Dr. Adrian Borsa Exclusive

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简要总结

本次访谈主要讨论了美国宇航局(NASA)和印度空间研究组织(ISRO)合作的“尼萨尔”(NISAR)卫星项目。该项目旨在通过合成孔径雷达技术,以前所未有的精度监测地球表面的变化,包括地震、火山、冰川、农业和气候变化等。

  • NISAR 是一项雄心勃勃的任务,在工程、数据和公共访问方面都具有挑战性。
  • 全球合作是应对这些挑战的最佳方式。
  • NISAR 将为地球科学和工程领域带来新的机遇。

介绍:印度的太空探索胜利

印度空间研究组织(ISRO)即将发射其最先进的地球成像卫星,重点是 NASA 和 ISRO 之间的首次硬件合作——尼萨尔(NISAR)合成孔径雷达。该雷达能够以前所未有的精度监测地球表面的变化,甚至可以检测到地壳、海洋和极地冰盖的厘米级运动。NISAR 配备两个独特的雷达系统,将提供前所未有的南极洲景象,标志着印度在太空领域的又一次重大胜利,并为未来两个世界领先的太空研究组织之间的合作铺平道路。

尼萨尔(NISAR)任务详解

尼萨尔(NISAR)是一个搭载在地球轨道卫星上的雷达仪器,实际上是两个雷达仪器。雷达的独特之处在于它可以全天候、在任何天气条件下(包括云层)工作。尼萨尔的任务是观测地球,特别是植被覆盖和地表变化,这些变化可能是由地震、滑坡或火山等引起的。它是一项跨学科的任务,因为它基本上每 12 天连续绘制整个地球的地图,比以往任何任务都更完整。其中一个雷达系统由印度设计和制造,是真正的合作成果。

尼萨尔(NISAR)在自然灾害中的应用

尼萨尔(NISAR)配备了先进的雷达,可以穿透云层,全天候工作,这在自然灾害中非常有用。例如,在地震发生后,尼萨尔可以直接提供灾害评估,确定最大滑坡发生的位置,以及可能影响道路或管道等基础设施的位置。对于海啸,尼萨尔虽然无法看到海啸的传播,但可以探测到海啸到达遥远海岸后的洪水范围和退却情况。

尼萨尔(NISAR)对地球科学的贡献

尼萨尔(NISAR)的固体地球科学涵盖了广泛的现象,包括地震、火山和滑坡。尼萨尔可以以前所未有的高分辨率在空间和时间上了解地下水的抽取和补给情况,对于可持续的地下水管理至关重要。

美国宇航局(NASA)和印度空间研究组织(ISRO)的全球合作

美国宇航局(NASA)和印度空间研究组织(ISRO)之间的合作对于尼萨尔(NISAR)的成功至关重要。像尼萨尔这样的任务非常昂贵且具有风险,因为它需要开发许多新技术。通过合作,两国可以集中各自的优势人才和资源,共同解决共享的科学问题。这种全球伙伴关系代表了未来,因为地球的变化不会止于政治边界。通过全球任务获取数据,可以应用于各个国家,帮助有需要的人们。

尼萨尔(NISAR)面临的挑战及解决方案

尼萨尔(NISAR)在任务过程中遇到了工程挑战,但通过美国宇航局(NASA)和印度空间研究组织(ISRO)的共同努力得到了解决。其中一个挑战是尼萨尔天线的部署问题,通过大量的工程工作,确定了潜在的威胁并采取了缓解措施。虽然这延迟了卫星的发射,但这种合作解决问题的能力是关键。

尼萨尔(NISAR)数据的可访问性和应用

尼萨尔(NISAR)将收集大量关于地球表面的数据,这些数据需要以可访问和有用的形式向公众开放。美国和印度都有自己的数据系统,美国宇航局(NASA)有一个档案中心,正在开发易于访问的工具。尼萨尔将生成分析就绪的数据产品,并通过易于理解的用户界面提供这些数据。虽然任何人都可以查看用户界面,但政府机构、急救人员和科学家等用户可以最好地利用这些数据。

尼萨尔(NISAR)对气候变化的贡献

尼萨尔(NISAR)是一个变化任务,可以观察到植被、火灾和洪水等变化,这些变化可能是气候变化的表现。尼萨尔可以精确地捕捉和理解这些变化现象,但如何将这些信息用于模型等则超出了尼萨尔的直接范围。尼萨尔可以为科学家提供数据,以确定这些变化是由于人类活动、自然变异还是长期变异引起的。

尼萨尔(NISAR)任务的核心信息

尼萨尔(NISAR)是一项雄心勃勃的任务,在工程、数据和公共访问方面都具有挑战性。应对这些挑战的最佳方式是通过伙伴关系。尼萨尔的全球性,以及两个充满活力的人口和空间组织之间的合作,令人兴奋,并激励孩子们进入地球科学和工程领域。

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0:00 Welcome back. You're watching NewsX. I'm Udar Prattab Singh. The Indian Space Research Organization is all set to launch its most advanced Earth imaging satellite to date later today. All eyes are now on the Sati Dhavan Space Center in Shrihari Kot, Andhra Pradesh as the NASA ISRO synthetic aperture radar is all set to jet off to the final frontier at 5:40 p.m. This is the first hardware collaboration between NASA and ISRO and is all set to advance the systems used to monitor our planet with the capacity to inspect movements down to centimeters in the Earth's crust. Oceans and polar caps, NISAR, the first synthetic aperture radar with two distinct radar systems would also provide us with an unprecedented view of Antarctica. This is India's latest big victory in the space sector and is all set to pave the way for enhanced future collaboration between two leading space research

0:47 organizations in the world. Before we dive into the discussion and the actual launch sequence begins, let's quickly cover some more details about Nisar and also some of India's recent big wins in the safe space exploration center. Dr. Adrien Borsa, geoysicist joins us live from NISAR science team, NASA. Thank you so much for being with us today. Dr. Adrian, uh, you know, tell us a bit about NSAR. It's a collaboration between NASA and ISRO, two, the world's leading space agencies. What exactly is NSAR? Tell us a bit about that and why this is really being called a gamecher. So, NISAR is a radar instrument on an

1:32 earth orbiting satellite. Um, in fact, it's two radar instruments. Um what is unique about a radar is that this radar it operates all the time uh sort of any weather uh through clouds day or night. Um and in this case uh NISAR is a mission that is observing the solar earth in particular vegetation vegetation canopy uh and change and then ground the ground surface change underneath the the vegetation. So that ground surface change might be due to earthquakes or landslides, volcanoes, um and all of these things together make it a very interdisciplinary mission. It is a gamecher because it is essentially

2:17 really mapping the entire globe continuously uh every 12 days. Um it's a much more complete mission than has ever been flown before. And it has these two radars on it. We'll probably talk about this more but one of the radars um one of those radar systems was designed and built in India. So it's truly a collaboration >> you know is equipped also with advanced radar that can see through clouds and operate day and night reportedly as well. Tell us a bit about a possible real world example that how this unique ability would help people on ground. Could it help in a natural disaster? >> Absolutely. And you brought up in fact um a perfect example. So the Kamaka earthquake was a very large event um

3:05 that then uh created or generated a large tsunami that traveled across the ocean. So take these two uh coupled phenomena. On the earthquake side, most of the earthquakes that are really damaging are shallower than the Kamchaka earthquake and they result or they are the result of fault slipping very often in urban areas. And so what NISAR can uh can provide directly after a natural disaster like that earthquake is a damage assessment. Where did the greatest slip happen? Where might it have impacted roads or pipelines? U you know the resources and infrastructure that support human um human life and society. Um on the other side the tsunami NICAR can't actually see the tsunami

3:53 propagating but once it arrives at uh a distant shore um let's say there's flooding NISAR is uniquely capable of uh detecting both the flood waters the flood water extent and then the gradual recession of the flood waters. So these just a great example of how these uh how NICAR can can sort of reach across different phenomena to help um with disaster resp. >> In fact, you're also part of the NISAR solid earth science team. What specific mysteries about our planet's everchanging surface like earthquakes, volcanoes, or even how land is sinking or rising, are you personally most excited to see NSAR possibly help us unravel? Yes. Uh so Celadote science encompasses

4:43 a really broad range of different phenomena. I I mentioned earthquakes, uh volcanoes, landslides. My own research and what I'm super excited about um at least recently my research has been on um groundwater use and recharge in support of agriculture. I know this is very important in India um just like it is here in the US. uh in my home state of California, the central valley. So what we expect to get from NISAR in particular is unbelievably high resolution in space and time. Um knowledge of where groundwater is being pumped and then more critically where it's being recharged and how. And the paradigm we have for recharge has been you know just

5:29 generally the whole the whole aquifer recharges equally when what we think is happening is that the recharge is coming along uh specific rivers. An instrument like NISAR will allow us to test this hypothesis and it's really critical for groundwater management uh sustainable groundwater management. >> Okay. Let me also in fact ask you about this mission truly representing I think a global partnership as well between the US and India. Why was this collaboration so crucial you believe for the success of NASA and what does it signify for future international space endeavors? >> Yes. Well, as you said, two of the great space agencies right now are joined uh to to launch this mission to to design,

6:15 to build and launch this mission. You know, a mission like NISAR is incredibly expensive and the and it's also very risky, right? Because you're developing a lot of new technology. Um how fast is that technology going to be developed? How much re how many resources or or how many u people can you put on it? uh on that development. Partnering between in this case NASA and Israel allows two countries to bring their best talent and their resources towards a a a mission that's that's addressing really shared science, shared problems. So in my mind and I think the mind of the entire science team, partnerships like this, global partnerships represent the

7:00 future. this is how we should be doing work because you know the the earth doesn't stop at political boundaries right you know the earth is doing its own thing and importantly we learn so much by by a global mission that's taking data from sort of the entire planet and applying that back to our our home countries or you know um places where there are people that need uh need this information and need our help. >> Yes. Now with a mission as ambitious as NSAR, there are bound to be significant challenges. Could you share one of those challenges that possibly you faced or anticipated so far and how you're actually overcoming them? >> Right. So having been involved with a few missions

7:46 I can say that NISAR was exceptionally well managed um in the sense that as we were moving through the mission the engineering challenges that came up were being addressed they were being addressed jointly between NASA and ISRO um and then uh resolved. So just first of all I would say the collaboration the partnership was uh incredibly positive and that's what we saw uh on the science team. Uh I I would say an example of one of the the great challenges was um uh recently engineering tests discovered that the deployment of this huge NICAR antenna that we've talked about you know it's it's 12 meters across um uh might

8:33 have been problematic given the the understanding our understanding of the um the heat environment it would be in and a lot of engineering work went into determining the potential threat and then doing mitigation. This did delay the the the launch of the satellite. But you know again challenges like this do come up with missions and the key thing is that you have two groups in our case who are both you know working well together to to resolve it >> right now. You know NSA also will be collecting an unprecedented amount of data about the earth's surface tracking changes down to mere centimeters. What's the plan for making this treasure trove of information accessible? How do you envision it being used by everyone from scientists to farmers to disaster

9:20 responders as well around the world? Dr. AJ, that question about data is an essential one both because the volume of data but also because the raw radar data is really not usable by almost anybody except for you know just a few experts. So yes, what is critical is putting the data out to the public in a form that is both uh sort of that that is usable that's accessible um and that can help solve problems. So how that's been done um both India and the US actually have their own data systems. Um I can't really speak to how um Israel is doing

10:06 um is making its data available. I can say that on the NASA side uh we have an archive center that has been developing tools for easy access. Um well first the the mission is producing data products that are are sort of analysis ready we call them useful for users at the same time that data then are available through very easy to understand user interfaces. So that question of data accessibility and usefulness is sort of at the top of our mind. I will finally say that you also asked about how can individuals use these data. Certainly, you know, anybody can can look at um a user interface, but where we see the

10:52 biggest impact is um users that are at government agencies, maybe you know, state, local, federal, uh first responders, the people in between the scientists and you know, the public, they're the ones who I think can leverage these data the best. >> Yes. Um also you know as far as uh beyond immediate applications like disaster response how will NASA's long-term observations of our planet shifts continue and contribute to our understanding actually of you know issues like climate change as well Dr. Borsa. So it's interesting uh climate change is uh I mean how climate change manifests

11:39 itself um like any change on the planet um is is really in the realm of modeling. I think what NISAR does it's a change mission we can see changes in in sort of you name it right vegetation fires that occur um we see the impact on vegetation flooding from hurricanes um we can see the flood water extent so these things are potentially manifestations of climate change but from NISA's perspective they are just natural events that are occurring and NISAR is you know again exquisitly tuned to uh pick up and understand those change phenomena, how they are then how that information is put into models etc is is sort of outside of NISAR's direct

12:24 domain. So um yeah, I mean I think there's there's a huge contribution on the change side whether or not it's um uh it's change due to uh different human like agricultural practices or change due to natural variability of the planet or change due to long-term variability. Um yes that I think that's for scientists to then determine on their own using IR data. >> Yes. Now, as someone deeply involved in this mission, what is the single most important message you want the public to take away about NISAR and its potential impact on our planet as well as our lives? >> I guess the message is you've already used the word ambitious. I think NISAR

13:12 was an incredibly ambitious me mission on an engineering side, on the data side, on the public access side. Um really the looking forward I think the best way to manage these kinds of challenges is through partnerships and you know if nothing else I would say just the global nature of the mission the idea that we are joining two um two of uh you know these sort of immense um uh immensely uh dynamic populations and uh space centers and space organizations. Um, that's what excites me and I hope it excites other people and you know it it uh motivates the children that are out there right now

14:00 watching this launch to want to get into um the inter earth science and and into this the engineering realm. >> Yes, you know the leader of Okay, let's leave it at that. Dr. Adrien Borsa, thank you very much for joining us with your perspective on that big story. >> For more such videos, subscribe to the NewsX YouTube channel. Hit the bell icon. [Music]

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