index.qmd

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title: "Welcome to our Research Group"
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<img src="/img/FraLabLogo.png" alt="Christian Frankenberg" width="300">

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### Our group studies the global carbon cycle using a variety of tools:

- We leverage the vantage point in space to globally observe the Earth, using remote sensing for atmospheric trace gases and surface properties.
- Not only do we use higher-level satellite products (i.e., L2 and above), but we also generate our own data from spectral measurements.
- Our data sources include OCO-2, TROPOMI, EMIT, ECOSTRESS, GRACE, MODIS, Landsat, Sentinel-2, among others.
- We use and develop land surface models to study global carbon cycles and their dominant drivers.
- We connect remote sensing and modeling such that models can directly learn from space-based data (as part of [CliMA](https://clima.caltech.edu/)).
- We perform field and leaf-level measurements, which include our spectrally resolved Pulse Amplitude Modulated Chlorophyll Fluorescence measurements and PhotoSpec, a novel system for measuring Chlorophyll Fluorescence at Fluxtower sites.

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### Christian Frankenberg
Professor of Environmental Science &amp; Engineering<br>Research scientist, JPL<br>
Mail Code 131-24 <br>
Pasadena, CA 91125-2300<br>
Office: 203 Linde+Robinson (<a href="http://lindecenter.caltech.edu/about/contact"><i class="fa fa-map"></i></a>)<br>
{{< fa phone >}} 626-395-2331<br>
{{< fa envelope >}} <a href="mailto:cfranken@caltech.edu">cfranken(at)caltech.edu</a><br>
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<a class="twitter-timeline" data-chrome="transparent nofooter noborders noheader noscrollbar" href="https://twitter.com/chr_fronge?ref_src=twsrc%5Etfw" data-height="500">Tweets by chr_fronge</a> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8" ></script><br>
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![TROPOMI Fluorescence](/img/blend_v9_small.jpg){.lightbox}