Picture of the author
contact me!

hi!

My name is Jelmar. I'm currently finishing up a MSc in Aerospace Engineering at TU Delft in the Netherlands. I'm passionate about science and software engineering. Have a look at some of the projects I've done, or see my blog if you're interested in my writings.

LinkedIn activity

Jelmar Gerritsen
Jelmar GerritsenMSc Aerospace Engineering
1w β€’
68
Very happy to announce that I have graduated from TU Delft | Aerospace Engineering! I successfully defended my MSc thesis titled "Generalized multi-band methane enhancement retrievals using PACE-OCI", in which I developed a new retrieval algorithm for multispectral methane enhancement retrievals and applied it to OCI, the main instrument aboard the PACE satellite.

I'm hugely thankful to the people at SRON Space Research Organisation Netherlands who helped me get here - in particular my supervisors Tobias Arie de Jong and J.D. (Bram) Maasakkers.

Now on to the next challenge πŸš€
image
image
Jelmar Gerritsen
Jelmar GerritsenMSc Aerospace Engineering
10mo β€’
33
A little (late) update: back in January, I wrapped up my internship at SRON Space Research Organisation Netherlands. I had a great time and learned a lot about Earth observation and atmospheric modeling. My work focused on comparing fire emissions datasets by using them as priors in the TM5 chemical transport model, and evaluating the results against TROPOMI CO satellite observations.

To visualize the large number of generated plots (~5000), I wrote a simple interactive tool. Being able to quickly jump between and cross-compare results is in my opinion a big benefit and makes it way easier to find interesting patterns and formulate hypotheses.

Some of my findings:
-πŸ”₯ Extreme fires like the 2020 California and 2019–2020 Australia wildfires were underestimated across all inventories

- ⌚ Australia, Europe, and Boreal Asia showed two fire seasons (a smaller one in spring and a main one in summer); while South America and South Africa experienced extended fire seasons

- πŸ“Š The bottom-up GFED5 inventory performed best overall, while the top-down FINN2.5 often overestimated emissionsβ€”likely affected by how both handle small fires

For my full results, you can read my report on my page or just shoot me a message πŸ“©

I'm also happy to say I'm staying on as a thesis student at SRON! I'll be focusing on methane plume observations from space πŸ›°οΈ
image
image