# Campaign logbook

```{admonition}
    Contact
    Cyril Crevoisier, LMD
    Véronique Piou, CNES
```

(20251012)=
## Sunday 12th October

Today was a day-off for the measurements… but the computers were on to analyze the data. Time to reflect on this past week.

As shown on the map, in the air, were already performed:
- 4 flights of SAFIRE ATR42: 2 to Fos-sur-mer, one to Bilbao and one to Barcelona, the two last ones in coordination with Gerfaut Dynamic WT9.
- 5 flights of Gerfaut Dynamic WT9: 3 in Madrid and the 2 coordinated with the ATR42 in Bilbao and Madrid.

![flights_map](/images/ab2cd_flightmap_1stweek.jpg)

**SAFIRE ATR42 (red) and Gerfaut DynamicWT9 (yellow) flights over the first week of AB2CD**

And ground-based EM27/SUN spectrometers of AEMET delivered a continuous times series of XCO2, XCH4 and XCO over the week. With favourable wind conditions, clear gas enhancement were observed at the sites. This is particularly well seen on the 4th and 7th of October.

![em27](/images/AB2CD_EM27_Madrid_timeseries_ffirstweek.png)

**Time series of wind speed, XCO2, XCH4, XCO and XH2O as measured by the 2 EM27/SUN spectrometers deployed at Madrid during the AB2CD campaign.**

The time spirit is high and everybody is eagerly waiting for next week flights to Madrid… if weather allows!