14–16 Jun 2021
Europe/Brussels timezone

How does the HadISDH in situ surface humidity product compare with other estimates?

15 Jun 2021, 16:00
15m

Speaker

Kate Willett (Met Office Hadley Centre)

Description

HadISDH is a global gridded surface humidity climate monitoring product based on quality controlled and bias adjusted in situ observations from weather stations and ships. It shows that while the amount of surface water vapour has increased since the 1970s, the air has become less saturated. Similar results are found in the ERA5 reanalysis but there are temporal and spatial differences that are yet to be understood. Satellite estimates of water vapour may help to illucidate some of the reasons for these differences and help to understand changes in water vapour where there are no in situ observations. The respective uncertainties and differences in observing and representing water vapour will need to be taken into account in any comparison.

Primary authors

Kate Willett (Met Office Hadley Centre) Dr Alan Vance (Met Office)

Presentation materials