# Welcome to CELLO
<font color='grey'>Cloud and EarthCARE caL/vaL Observations</font>

```{admonition} Overall objectives of the CELLO campaigns
:class: tip
1. Provide in-situ calibration and validation (cal/val) data for the EarthCARE mission scientists and product development team in a range of cloudy environments and temperature regimes.
2. Collocate the EarthCARE correlative observations with overflights of ground-based remote sensing sites whenever possible.
```
The collocations with the ground-based remote sensing sites will ultimately provide a much more comprehensive cal/val dataset than ascertainable by any single measurement platform. 

**Meet our campaigns:**

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:gutter: 2

:::{grid-item-card} 
:link: orbit-opportunities
:link-type: doc
<font color='grey'>25 September - 15 October 2025 <br>
<b>Kiruna, Sweden</b></font>
^^^
```{figure} logos/LOGO_CELLO_ARCTIC_sized.png
---
scale: 20%
align: center
---
```
+++
{flight-cat}`ec_under`
{flight-cat}`marine_sc`
{flight-cat}`cb_anvil`
{flight-cat}`melt_layer`
{flight-cat}`altocumulus`
{flight-cat}`cirrus`
{flight-cat}`precip`
{flight-cat}`mpc`
{flight-cat}`multi`
{flight-cat}`alomar`
:::

:::{grid-item-card}
:link: https://orcestra-campaign.org/intro.html
<font color='grey'>10 August - 10 September 2024 <br>
<b>Praia, Cabo Verde</b></font>
^^^
```{figure} logos/LOGO_CELLO_ORCESTRA_sized.png
---
scale: 20%
align: center
---
+++
{flight-cat}`ec_under`
{flight-cat}`ec_track`
{flight-cat}`in_cloud`
{flight-cat}`spiral`
{flight-cat}`insitu_aerosol`
{flight-cat}`liquid`
{flight-cat}`mpc`
{flight-cat}`spiral_mindelo`
:::

::::