iiinova — where your digital self keeps evolving

Amir H. Souri @asouri.bsky.social · 27/06/2025

In times when dinosaurs are forced to retire, what would a gecko do?

Amir H. Souri @asouri.bsky.social · 04/06/2025

“The weakness of patrimonialism is that as it undermines bureaucracy, it “weakens and eventually cripples” the state. Competent people are replaced by obedient ones dependent on the ruler's support; corruption is accelerated as contractors and civil servants become accustomed to currying favor.”

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Amir H. Souri @asouri.bsky.social · 15/05/2025

We're pleased to announce the launch of our Ozonerates website (www.ozonerates.space). The platform is now live and fully equipped with an interactive map browser and data links, allowing users to explore satellite-constrained products such as PO3, sensitivity maps, NO2 and HCHO mixing ratios.

ozonerates.space

Explore Ozonerates From Space: : Get Informed About PO3 Products Determined from Space

We have established a robust relationship between ozone production rates and several geophysical parameters obtained from several intensive atmospheric composition campaigns. We have shown that satell...

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Amir H. Souri @asouri.bsky.social · 04/05/2025

denial, anger(☑️), bargaining, depression, and acceptance.

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Amir H. Souri @asouri.bsky.social · 13/04/2025

“It just doesn’t seem like the opportunities are going to be there to be an effective scientist, and an effective person building the science community, in the U.S. anymore,” Dr. McDowell said. “I just don’t feel as proud to be an American as I used to be.” www.nytimes.com/2025/04/12/s...

nytimes.com

Jonathan McDowell on Retiring From Harvard and Leaving the U.S.

Jonathan McDowell is retiring from studying the universe. But he’s ramping up efforts to chronicle humanity’s exploration of space.

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Amir H. Souri @asouri.bsky.social · 13/04/2025

I’m having a hard time making sense of all of this!

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Amir H. Souri @asouri.bsky.social · 06/04/2025

The new political climate has triggered a downward spiral in my career. At my lowest, NASA HQ has accepted my TEMPO science proposal, a mission that I have been eager to be part of for a long time. This chance feels like the universe saying, "Keep going.” I’m leaning into it, scars and all.

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Reposted by Amir H. Souri

Nicole Tersigni @nicsigni.bsky.social · 05/03/2025

you’re fired. wait you’re rehired. email us a list of things you’ve done today wait forget it you’re fired again. come back your job was important. you’re fired. or hired. come in to the office. wait the office has no computers go home. we are the department of government efficiency.

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Reposted by Amir H. Souri

Elinne Becket, PhD @bielleogy.bsky.social · 03/03/2025

Friendly reminder: if you are waiting on something from a US-based scientist/reviewer/editor, please realize that we're barely making it through each day putting out non-stop fires and trying not to collapse into tears. We're trying our best, but things will take longer right now. Give grace.

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Amir H. Souri @asouri.bsky.social · 25/02/2025

Long-term trends of NO2 mixing ratios within the PBL region inferred from OMI and MINDS (2005-2019) over my hometown, Tehran.

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Amir H. Souri @asouri.bsky.social · 18/02/2025

We establish a simple yet robust relationship between net PO3 and geophysical parameters obtained from several AQ campaigns. We show that remote sensing data can constrain these parameters, enabling us to produce the first global maps of PO3 with unprecedented resolution. doi.org/10.5194/acp-...

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Amir H. Souri @asouri.bsky.social · 08/02/2025

It hurts even more to leave your country ten years ago to escape hypocrisy and ignorance, only to face the same issues AGAIN.

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Amir H. Souri @asouri.bsky.social · 28/01/2025

It's hard to be motivated to talk about science these days, but it might be a good distraction. How well can a GSFC model (a quarter degree) convert NO2 columns to near-surface mixing ratios? We used 77 aircraft spirals at OMI revisit to answer it. It's fine, but there is still room for improvement:

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Amir H. Souri @asouri.bsky.social · 26/11/2024

After months of attempts, we parameterized ozone production rates based on measurable compounds by satellites without relying on HCHO/NO2. An L2-regularized DNN makes this isopleth, providing PO3 and the sensitivities for various envs (NOx-sensitive, VOC-sensitive, light-limited, water-limited, ..).

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Amir H. Souri @asouri.bsky.social · 25/10/2024

If you are frustrated by the current political environment, I encourage you to watch this video: How the US Is Destroying Young People’s Future | Scott Galloway | TED t.co/57OPsgXO96

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Amir H. Souri @asouri.bsky.social · 13/08/2024

[2/2] The outcomes won't be the same because of the non-linearity so they need to be averaged.

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Amir H. Souri @asouri.bsky.social · 13/08/2024

[1/2] Most non-linear model scenarios require at least two pathways. If we want to quantify the contrib of an emitter (A) to say, PM25, using a model, we have two options: i) including everything in the model minus w/o A, and ii) including A only minus the background. t.co/C9cNDueBnr

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Amir H. Souri @asouri.bsky.social · 06/08/2024

But, we have large inconsistencies among satellite-based tropospheric ozone retrievals, which prevent us from verifying if the models are capturing TO3 reasonably, especially in the southern hemisphere. This can, by itself, contribute to asymmetric issues in OH between SH/NH. t.co/TXNwvPFMn3

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Amir H. Souri @asouri.bsky.social · 26/07/2024

The first algorithm of satellite-constrained PO3 is out for discussion: t.co/HWeMmGB5LD

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Amir H. Souri @asouri.bsky.social · 15/07/2024

I'll give a talk tomorrow at the #QOS24 symposium in Boulder about our PO3 product informed by satellite and aircraft observations. I can't wait to see the mountains! #ozone #remotesensing #NASA t.co/Ss0Z8qtNZD

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Amir H. Souri @asouri.bsky.social · 14/07/2024

These structures were symbols of productivity and prosperity; now, they are the main contributors to premature death and rapidly changing climate change. t.co/g02ftdpBnZ

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Amir H. Souri @asouri.bsky.social · 25/06/2024

Anonymous poll: What is the biggest obstacle to academic success as an early career scientist? (too bad I couldn't add more than four options). @AcademicChatter #academia

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Amir H. Souri @asouri.bsky.social · 20/06/2024

What do you think? Out of HCHO, glyoxal (CHOCHO), and isoprene, HCHO takes the first place at better explaining the reactivity of VOCs during DISCOVER-AQs+KORUS-AQ+INTEX-B+SENEX+ATOMs. This ranking doesn't hold true for specific regions (i.e., high aromatic emiss). t.co/Q2VRWTLBNG

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Amir H. Souri @asouri.bsky.social · 29/05/2024

"I don't believe in satellite measurements". What if I correct their biases with more than 12,000 FTIR and MAX-DOAS paired observations for you? Thanks to my collaborators at @BIRA_IASB for getting this job done. We always need good benchmarks. t.co/4cu9qcL8ji

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Amir H. Souri @asouri.bsky.social · 23/05/2024

I'm eagerly looking forward to seeing people at @NASA_HAQAST @MIT in June to show our novel product, PO3 estimates from space. t.co/iOAqO40slP

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Amir H. Souri @asouri.bsky.social · 09/05/2024

An interesting chart based on t.co/5UlBiNAVs2. I wonder if cities in the U.S. were purposefully designed so people rely on cars. t.co/5iKWMNl4lr

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Amir H. Souri @asouri.bsky.social · 15/04/2024

My first visit to #EGU24 in #Vienna. Don’t forget to stop by my talk on Thursday (Room 1.85/86 at 11:20) and my poster on the same day(Hall X5 9-10:30 and 12-12:45). t.co/Wp9yDGceWr

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Amir H. Souri @asouri.bsky.social · 09/04/2024

The bimodal effect of solar eclipse on the solar power generation observed by my house. 😜 t.co/HoPZWMlHQm

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Amir H. Souri @asouri.bsky.social · 07/03/2024

Do you want to know more about our novel product, ozone production rates, from space? Please come to #EGU2024, where I'll show you how a blend of information from models, aircraft, and TROPOMI can create an informative product. Plus, I'll give a talk about OH drivers/biases: t.co/2PTIJOnoBp

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Amir H. Souri @asouri.bsky.social · 29/02/2024

Please check out my new discussion paper in ACPD. Our work reveals regional biases in OH of up to 20% using ML+satellite data. We have identified five variables - tropospheric ozone, NO2, HCHO, water vapor, and stra ozone - that can explain a 65% variance in the OH trend. t.co/5QPIuc31SZ

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Amir H. Souri @asouri.bsky.social · 23/02/2024

My upgraded GOESVisualizer python tool now is capable of making loop gifs over your desired region/time based on both GEOS-16 and GOES-17. Open-source at t.co/zdmYBb8rjk t.co/39dA4HHFAx

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Amir H. Souri @asouri.bsky.social · 14/12/2023

San Francisco’s walkability score: ZERO! But love the scenery (and how aerosols may make prettier sunsets 😜). t.co/ztsqzNDEbR

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Amir H. Souri @asouri.bsky.social · 13/12/2023

It was nice to catch up with my former teammates last night! Their progress on #TEMPO and #GEMS is impressive! #AGU23 t.co/43CcqVwr8E

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Amir H. Souri @asouri.bsky.social · 05/12/2023

I hope to see many of you and new faces next week at #AGU23. I’ll present two posters related to i) the effect of sea breeze on HCHO vertical shape and its implication for GEO satellites and ii) the enhancement of OH simulations using information from OMI Aura. t.co/W2JLQpMSXy

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Amir H. Souri @asouri.bsky.social · 21/11/2023

Sometimes they don’t even look at! 😅 t.co/CqEZ9yxdlY

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Amir H. Souri @asouri.bsky.social · 16/11/2023

TROPOMI HCHO data over the US. Is it based on the average of several years of data? Is it based on months? No, it's just a month: 2020-08. Not only is it finer than OMI, but also it is more precise. @tropomi #airquality #satellites t.co/Vk6eqaegQA

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Amir H. Souri @asouri.bsky.social · 14/10/2023

Helpful instruction to be a better mentor/PI/manager. t.co/Xfk2zSXXQw

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Amir H. Souri @asouri.bsky.social · 07/09/2023

A new product from my previous team at @CenterForAstro shows a large dipole pattern in HCHO column trends in #SouthAmerica. The downward trends in HCHO in a large portion of the Amazon basin are likely caused by a decline in deforestation rates. #airquality #remotesensing t.co/GWW74DkQg5

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Amir H. Souri @asouri.bsky.social · 06/09/2023

Encouraging to see our ML agrees with Wolfe et al. 2019, suggesting that HCHO and OH are correlated in remote areas where the HCHO photolysis dominates over HCHO+OH. This means if you see higher HCHO levels over oceans, there must have been more OH to oxidize background VOCs. t.co/mFUUz9zsG5

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Amir H. Souri @asouri.bsky.social · 28/07/2023

When the middle-aged and elderly population say: "This summer, unlike any other in our memory", it is called #climatechange.

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Amir H. Souri @asouri.bsky.social · 28/06/2023

💡My new paper addresses challenges with simulating vertical shapes of HCHO in coastal areas affected by sea breezes, making it difficult to get accurate values from GEO satellites (@TEMPO_Mission) [link] t.co/tVrrMeO5KR @mattnasa18 @jgeddes85 @rkumar_ncar @kkno21 t.co/7dK3WPMsrB

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Amir H. Souri @asouri.bsky.social · 17/06/2023

Two new submissions to #AMTD: i) a new airborne sensor called #MethaneAIR, with unprecedented spatial resolution (20 m2) used to estimate #methane flux highly agreed with controlled releases (t.co/P0wIjjs1Qp), ii) a new trop BrO product from #OMPS t.co/Pyjtsafg4I

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Amir H. Souri @asouri.bsky.social · 15/06/2023

Rebuilding a country after a #war requires tremendous amount of energy, making war a large contributor to the growing #carbon footprint on our planet. #GlobalWarming #stopthewar

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Amir H. Souri @asouri.bsky.social · 23/05/2023

The # of months with at least one recorded observation from #OMI #NO2 columns in 2005-2019: certain areas may lack sufficient data samples due to factors like cloud, snow, and limited sensitivity of satellites. But, there are also regions with large # of samples. t.co/4GdWp4GRCO

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Amir H. Souri @asouri.bsky.social · 19/05/2023

Left: OH est. from a XGBoost machine trained by more than 40-yrs full chemistry model [𝐴𝑛𝑑𝑒𝑟𝑠𝑜𝑛 𝑒𝑡 𝑎𝑙. 2022, GMD] in July 2010, right: the sensitivity of OH to NO2; this reinforces the importance of getting NO2 correct to better represent OH and subsequently the tCH4. t.co/KTB2myIIUd

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Amir H. Souri @asouri.bsky.social · 28/04/2023

Rising tropospheric #ozone concentrations over #Asia and its impact on the background values in the west coast are evident based the MERRA2-GMI. t.co/SBlpKxfyeV

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Amir H. Souri @asouri.bsky.social · 21/04/2023

Why are HCHO levels going down over the southeast US? Temperature? Reduced anthropogenic NOx->reduced HCHO production from oxidation of VOCs? I see the signature of plants being under stress in 2011 (La Nina). t.co/znL3d5SCUk

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