Phoenix MECA Non-imaging Calibrated and Derived Data Bundle

This bundle contains the following collections:

data_tecp_rhs - Phoenix Thermal and Electrical Conductivity Probe (TECP)
Recalibrated Relative Humidity Data

This collection contains results from the recalibration of the TECP
relative humidity sensor performed in a Martian environmental chamber at
the University of Michigan. The recalibration was conducted using a TECP
engineering model simulating the full range of environmental conditions
observed at the Phoenix landing site, while ensuring the comparability
of the engineering model's output with that of the flight model. This
recalibration expands the covered environmental conditions, with focus
on the warmest and driest conditions (daytime) because they were not
covered in the original calibration and previous recalibration. The
dataset contains the sol number and local true solar time of all in-situ
measurements, the measured temperature at the TECP board, the measured
recalibrated frost point and water vapor pressure, the estimated error
in water vapor pressure, and the derived values of volumetric mixing
ratio and relative humidity.  

Each document and data product in this bundle is described by a PDS4
label in a separate file with the same name but with the extension XML.
PDS4 labels are XML (eXtended Markup Language) files that conform to the
PDS4 Information Model XML schema at
https://pds.nasa.gov/pds4/schema/released/. They are best viewed in an
XML-aware text editor, and may be used by software that can manipulate
XML documents.

See these sources for more information.

- For information about the Phoenix TECP RHS collection, see Fischer,
E., et al., Relative Humidity on Mars: New Results from the Phoenix TECP
Sensor, Journal of Geophysical Research: Planets, doi:10.1029/2019JE006080, 
2019.
- For information about PDS4, see https://pds.nasa.gov/pds4/about/. 

This bundle was created by German Martinez, Erik Fischer, Jennifer Ward,
and Susie Slavney and archived at the Geosciences Node of the Planetary
Data System. 
Questions about this bundle may be directed to geosci@wunder.wustl.edu.

Other MECA calibrated and derived data sets on this volume, which have
been archived using the PDS3 standard, will eventually be migrated to
PDS4. The existing data files and PDS3 metadata will remain unchanged,
and PDS4 metadata will be added.