NEEM

Water vapor isotope experiment was conducted at the NEEM site in North-West Greenland (77.45 N, 51.05 W) during 178 days across the summer season field campaigns of May – Aug 2010, Jul – Aug 2011, and May – Aug 2012.


Data download: NetCDF

Variable definitions      

Description

Unit

Equipment

Height (m)

Additional description

Date time

UTC

Water mixing ratio

ppmv

LGR 908-0004-0003

(2010 season) Picarro L1102-i

(2011 and 2012 season).

1 meter (2010 season), 3 meters (2011 and 2012 season)

Water vapour isotopic ratio (18O)

per mil

LGR 908-0004-0003

(2010 season) Picarro L1102-i

(2011 and 2012 season).

1 meter (2010 season), 3 meters (2011 and 2012 season)

Normalized to V-SMOW; Humidity dependence correlation: Non-linear regression

Standard deviation of 18O

per mil

LGR 908-0004-0003

(2010 season) Picarro L1102-i

(2011 and 2012 season).

1 meter (2010 season), 3 meters (2011 and 2012 season)

daily

Water vapour isotopic ratio (D)

per mil

LGR 908-0004-0003

(2010 season) Picarro L1102-i

(2011 and 2012 season).

1 meter (2010 season), 3 meters (2011 and 2012 season)

Normalized to V-SMOW; Humidity dependence correlation: Non-linear regression

Standard deviation of D

per mil

LGR 908-0004-0003

(2010 season) Picarro L1102-i

(2011 and 2012 season).

1 meter (2010 season), 3 meters (2011 and 2012 season)

daily

Air temperature

K

Relative humidity

<=100%

Air pressure

Pa

Precipitation

mm

Net radiation

W/m2

Wind speed

m/s

Wind direction

degree (°C)

Reference papers

           Steen-Larsen, H. C., Johnsen, S. J., Masson-Delmotte, V., Stenni, B., Risi, C., Sodemann, H., Balslev-Clausen, D., Blunier, T., Dahl-Jensen, D., Ellehøj, M. D., Falourd, S., Grindsted, A., Gkinis, V., Jouzel, J., Popp, T., Sheldon, S., Simonsen, S. B., Sjolte, J., Steffensen, J. P., Sperlich, P., Sveinbjörnsdóttir, A. E., Vinther, B. M., and White, J. W. C.: Continuous monitoring of summer surface water vapor isotopic composition above the Greenland Ice Sheet, Atmos. Chem. Phys., 13, 4815-4828, doi:10.5194/acp-13-4815-2013, 2013.

           Steen‐Larsen, H. C., C. Risi, M. Werner, K. Yoshimura, and V. Masson‐Delmotte, Evaluating the skills of isotope‐enabled general circulation models against in situ atmospheric water vapor isotope observations, J. Geophys. Res. Atmos., 122, 246–263, 2017.

Site contact

            Name: Hans Christian Steen-Larsen

            Email:  hanschr@gfy.ku.dk