Add AGU 2023 walkout slide image. Add LANL expertise link.

_pages/about.md

@@ -18,7 +18,7 @@ in porous/fractured media using numerical models. My research is done in
 collaboration with the Energy and Natural Resources Security Group (previously
 called Computational Earth Science)
 ([EES-16](https://www.lanl.gov/org/ddste/aldcels/earth-environmental-sciences/computational-earth-science/index.php))
-at Los Alamos National Laboratory. 
+at Los Alamos National Laboratory. [LANL Expertise Profile](https://lanlexperts.elsevierpure.com/en/persons/john-philip-ortiz)
 
 
 

_posts/2023-12-14-aguConference-talk.md

@@ -9,8 +9,9 @@ tags:
   - Mars
   - planetary science
 featured: true 
+#excerpt: "<img src='/images/posts/nmtBureau_walkoutSlide.png' alt='NMT-talkBanner' width='500px'/>"
 ---
-<!-- excerpt: "<img src='/images/posts/nmtBureau_walkoutSlide.png' alt='NMT-talkBanner' width='500px'/>" -->
+<img src='/images/posts/agu2023_walkoutSlide.png' alt='AGU-talkBanner' width='500px'/>
 
 <!-- NOTE: the featured callout in front matter allows the post to appear automatically on the ABOUT page if enabled there. -->
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@@ -34,7 +35,8 @@ experiment performed by *Curiosity*, which this work helped to inform.
 > In recent years, the Sample Analysis at Mars (SAM) instrument on board the Mars Science Laboratory (MSL) *Curiosity* rover has detected methane variations in the atmosphere at Gale crater. Methane concentrations appear to fluctuate seasonally as well as sub-diurnally, which is difficult to reconcile with an as-yet-unknown transport mechanism delivering the gas from underground to the atmosphere. We consider barometrically-induced transport of methane from an underground source to the surface, modulated by temperature-dependent adsorption as a mechanism to potentially explain the fluctuations. The subsurface fractured-rock seepage model is coupled to a simplified atmospheric mixing model to provide insights on the pattern of atmospheric methane concentrations in response to transient surface methane emissions, as well as to predict sub-diurnal variation in methane abundance for the Northern Summer period, which is a candidate time frame for *Curiosity*’s potentially final sampling campaign. The best-performing scenarios indicate a significant, short-lived methane pulse just prior to sunrise, the detection of which by SAM-TLS would be a potential indicator of the contribution of barometric pumping to Mars' atmospheric methane variations. 
 
 
-<!-- ![NMT-talkBanner](/images/posts/nmtBureau_walkoutSlide.png) -->
+<!-- ![AGU-talkBanner](/images/posts/agu2023_walkoutSlide.png) -->
+