Technical note: On HALOE stratospheric water  vapor variations and trends at Boulder, Colorado

Remsberg, Ellis

doi:https://doi.org/10.5194/acp-23-9637-2023

Articles | Volume 23, issue 16

https://doi.org/10.5194/acp-23-9637-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Water vapour in the upper troposphere and middle atmosphere:...

https://doi.org/10.5194/acp-23-9637-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 16

Technical note

|

30 Aug 2023

Technical note |

| 30 Aug 2023

Technical note: On HALOE stratospheric water vapor variations and trends at Boulder, Colorado

Ellis Remsberg

Data sets

LIMS/Nimbus-7 Level 3 Daily 2 deg Latitude Zonal Fourier Coefficients of O3, NO2, H2O, HNO3, Geopotential Height, and Temperature V006 E. Remsberg, G. Lingenfelser, and M. Natarajan https://disc.gsfc.nasa.gov/datacollection/LIMSN7L3_006.html

UARS Halogen Occultation Experiment (HALOE) Level 2 V019 James M. Russell III, et al. https://disc.gsfc.nasa.gov/datacollection/UARHA2FN_019.html

Water Vapor and Ozone Vertical Profile Data D. Hurst https://gml.noaa.gov/aftp/data/ozwv/WaterVapor/Boulder_New/

Short summary

This study compares analysis of trends in stratospheric water vapor from the Halogen Occultation Experiment satellite instrument with those from local frost-point hygrometers (FPHs) at 30 and 50 hPa over Boulder, Colorado (40°N), for 1993 to 2005. The FPH measurements are assumed correct. However, the seasonal sampling by HALOE is marginal from 2002 to 2005, such that its trends have a bias after 2001. Trend comparisons for 1993 to 2002 at 30 hPa agree within the uncertainties of both datasets.