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Sure.

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So, oceans.

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We've been measuring
different things in our oceans,

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which is such a critical piece
of our Earth system puzzle.

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For a long time.
We can look at temperature.

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We can look at surface height,
which affect sea level rise.

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And so we've also been looking
at the tiny microscopic organisms

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in our ocean called phytoplankton.

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And that's actually the first P in PACE.

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Now phytoplankton have chlorophyl
just like plants on Earth.

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And so we can see green

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in different ways that tell us
about the location of these organisms.

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So when you see a lot of them together,
the ocean is actually not just blue

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but green because
of these critical organisms in our ocean.

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Absolutely.

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I'm so excited to unveil images
that we've gotten from less

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than three months on orbit,
really transforming our understanding

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of oceans already.

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And so one of the exciting things about
PACE is while we can look

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at these organisms. We've been studying
Chlorophyl for a long time,

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but that looks at about like 4 to 6
different colors of green, if you will.

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With the advanced instruments on PACE,
we can look at over 200 different types.

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And what that does is
tell us important things about the types

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of organisms in our ocean
and where we might have,

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for example, harmful algal blooms
that could close beaches or areas

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where fish are going to be really happy
because you have a better food source.

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So with that global picture and advanced
instruments, we're really excited

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about what we're going to be learning both
now and looking into the future

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as a response, as our
our climate responds to changing patterns.

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So aerosols,

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which are you know, you can do smoke,
it could be dust

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are critical pieces of our climate puzzle
for a number of different reasons.

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One is that, for example,
things like fires

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and smoke, they can move a long distance.

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And in Washington, D.C.,
we were severely impacted by, fires

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from from Canada and affecting air quality
in all along the eastern seaboard.

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And so that's one aspect.

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But the other thing about aerosols
is there are really important piece

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in weather formation.

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So looking at where
clouds and rain may form.

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And so as we have an increased
understanding of the distribution

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and types of aerosols in our atmosphere,
we will have another piece of our puzzle

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to improve weather forecasting
and look at how our climate may respond

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in the future.

45
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That's right.

46
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Well, 2023 really
was the warmest year on record,

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and unfortunately we had other, peaks
that year as well.

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We had in July 2023
was the hottest month on record.

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We also had the warmest summer and fall.

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Now, these extremes are really important
to understand

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because we know that as our temperatures
increase as a result of human emissions,

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we are seeing more extremes
like droughts or floods.

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And so part of NASA's
role is to piece together

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how all of these systems interact
into more of an interconnected system,

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to better understand
how we may respond to these events

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in the future.

57
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Well,

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I have the great fortune
of speaking with you today on Earth Day.

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And what's really important to know
is that we all have agency in this, right?

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So we all can do our own part
to understand and celebrate the earth,

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talking to our our children and talking
to community leaders and decision makers

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about the importance of studying the earth
and the all hands on deck effort.

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We need to better understand
what's happened in the past,

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observe the present,
and improve our forecasting of the future.

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And so together, we can all move
this forward to build more resilient

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societies and mitigate impacts
for future generations.

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Well, oceans are a really important
part of the climate puzzle.

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First, they absorb 90% of the heat

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that has been emitted
as a result of carbon dioxide.

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So looking at oceans as a huge part
of that balancing is critical.

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Also,
the things that we talked about before,

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those phytoplankton absorb carbon dioxide,
just like our plants do.

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And so as we understand more about these
different communities in our oceans,

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we get a better understanding
of both the sources of carbon dioxide,

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but such as with aerosols
as well as the sinks.

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So together with the over two dozen

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satellites and instruments
that NASA have in concert

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with our domestic
and international partners,

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we are working to better understand
the big picture view of how our climate

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has changed in the past, observe
how it's changing now and then improve

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our predictions of the future
to build more resilient societies.

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Well, Earth
happens to be my favorite planet also.

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It's where we all live.

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And so it's a really critical piece of of
the Science Mission Directorate at NASA.

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And the other thing
is, is that by looking at our Earth,

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we are starting to understand
more about exoplanets, the planets

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beyond our solar system, places
that may have life.

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And so looking at the atmosphere
of our planet, we then look to, to

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with the James Webb Space Telescope,
for example, to see where

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other planets may have,
habitable environments for the future.

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So one of the unique things at NASA is
we look across our portfolio

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to understand our atmosphere,
how the sun interacts

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with with Earth and other planets
all the way out to the cosmos.

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Well, if
this excites you as much as it excites me,

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you can go to NASA.gov, slash Earth [nasa.gov/earth]
or at NASA Earth [@NASAEarth]

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to get information
about what you just saw, as well as access

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to the free and open data that NASA
provides to look and study Earth.