Harihar Rajaram

I worked with Hari at CU and at AGU and greatly appreciated his integrity, humor, intelligence, and friendship. We lost touch over the last 10 years or so but, still, even my little world feels noticeably emptier without Hari. My peace be with him and may his great love survive in all those he touched.

Hari was my professor at the University of Colorado in 2013. He went out of his way to guide me and help me in a difficult time of my life. I am forever thankful for his guidance and help. He will always be a very special teacher to me, and I am forever thankful for the influence he had on my life.

I was deeply sorry to hear of the loss of Hari and my deepest condolences to his wife Vijaya and his son Vinu! I met Hari in the late 80's when he became a graduate student at the University of Iowa Civil and Environmental Engineering Department where I was an assistant professor. I served as his advisor for a couple of years until he received his master's degree and departed for MIT for a PhD Degree. His intellectual effort and achievement even early in his career was remarkable as was his collaborative spirit and his strong focus. It was a prelude to his wonderful achievements in the years that followed. The paper we co-authored from his master's Thesis work is still referenced in spite its mathematical complexity. A wonderful collaborator! Konstantine P. Georgakakos

My first experience with Prof. Harihar was his invitation to review a manuscript in GRL, and this MS was published in GRL at last. He also handled our MS in GRL, which impressed us. It is a shock to hear of his passing. RIP!
Yulong Zhong

Hari was(hard hitting to say this) my maternal cousin. We(maternal cousins) had a lot of fun whenever we were together. The thought of Hari would bring a smile on anyone's face. Hari means humor and he would make all of us (cousins) laugh heartily. Chandru, , Hari and Bhavani were the older ones and favorites for all of us. The were the pets of Paati,all Chithis and Mamas. Hari had the ability to put people of all ages at ease. He would become one with anyone and resonate with their thoughts and activities. He kept all the cousins bonded by bringing back and narrating childhood anecdotes that we would
re-live the moments spent in "Paatiaam". His way of texting would make us feel as though we were conversing face to face and every bit of it was filled with humor.
We (my 2 brothers and myself) would look forward to our summer vacations when we visited Chennai. Our stay in IIT Madras campus are unforgettable pleasant times....cycling ,walking, playing in the campus, our visit to the Guindy zoo when Chandru and Hari would be taking care of the younger battalion......can go on and on. We would watch in awe as Hari ran along the tracks in the stadium. The three siblings, in spite of their achievements stood firmly grounded.
Their visit to Rourkela in 1982 is another unforgettable time. The fun, laughter and giggles, jokes etc. etc. bring a smile anytime. Lovely times.
I had the pleasure of meeting Vijaya and Vinu a couple of times during their visit to Bangalore. Hari had accomplished so much....but to us he was our Hari who brought back old childhood memories even after years.
Destiny has snatched him too early. May Hari's atma attain Sadgathi.

Hari was a professor for several of my graduate classes at CU Boulder. I always admired how kind and approachable he was even when dealing with complex topics. He had an amazing way of explaining things and was dedicated to his students. I learned so much from him in such a short time.
- John Stults

I met Hari as student at CU boulder in 1994. He was the best professor I ever had and the reason I got into hydrology. I worked with him as an undergraduate research assistant before he helped me get into grad school. He was a great mentor.
-Aaron Evans

Our deepest condolences to Vijaya and Vinu. Shankar and Sowmya.

Excellent host when we visited in colorado

I first met Hari at our proposal defense in Washington, DC, where he served as our reviewer. My initial memory of him dates back to several years ago when he handled one of my papers in WRR, though he did not remember it due to his involvement with many papers. At first, I thought of him as a very reserved person, but he reached out to me and was very approachable. I always found him to be a great mentor. I collaborated closely with Hari on several topics and worked with one of his PhD students. We also co-organized a special collection in AGU journals, including GRL, where he was the editor. When I first heard the news of his passing, it was so shocking that I hoped it was not true. My prayers are with his family, wife, and son, Veenu, whom I met when Hari came to drop him off for his PhD at UC Berkeley. His sad demise is a significant loss to the hydrological and biogeochemical community. I will miss a great collaborator and mentor. I hope his soul attains salvation.

I could hardly believe the tragic news when I heard it. I have the good fortune of becoming friends with many wonderful colleagues during my career, but Hari stood out for his kindness and brilliance. He was a deep thinker with a real talent to simplify complex problems. I always looked forward to seeing him at AGU meetings since the mid 1990s. I was particularly happy to be a guest at his table when he was awarded AGU Fellow in 2022. I was able to meet Vijaya who I heard so much about over the years (but not as much as I heard about his wonderful son, Vinu. I send you my deepest sympathy and condolences.

Albert Valocchi
University of Illinois at Urbana-Champaign

Hari was my classmate from IIT Madras. We were on the track team together. He was one of the best distance runners among all the IITs. In 2018, After more than 30 years, I heard from Hari and was delighted to know that he had moved to Johns Hopkins as a Professor. He was in the Homewood campus, whereas I was a faculty in the School of Medicine. Our paths seldom crossed, but last summer (2023), I ran into Hari during a music recital. We had a long and lovely chat reminiscing nostalgically. Unfortunately, we did not get to meet after that. It is a massive shock to hear about his untimely demise. I pray for great strength to be bestowed upon his wife, Vijaya, and son, Vinu to get through this ordeal.

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I first met Hari when he was a PhD student and attended our Hydrogeology Field School at the University of Waterloo. We kept in touch from time to time over the years because we shared research interests. Hari was exceptionally brilliant and prolific in his work which spanned many topics. My condolences to his family during this difficult time.

Ed Sudicky, Professor Emeritus
University of Waterloo