Independent Variables (Grids)

Latitude (latitude)

grid: /lat (degree_north) ordered (90N) to (90S) by 2.0 N= 91 pts :grid

Longitude (longitude)

grid: /lon (degree_east) periodic (0) to (2W) by 2.0 N= 180 pts :grid

Time (time)

grid: /T (months since 1960-01-01) ordered (Jan 1908) to (Dec 1958) by 1.0 N= 612 pts :grid

Other Info

actual_range

[ 0.03418966 43.992607 ]

add_offset

32.765999

cell_methods

time: mean (monthly from 6-hourly values)

Dataset

NOAA-CIRES 20th Century Reanalysis Monthly Averages

datatype

shortarraytype

GRIB_id

52

GRIB_name

RH

level_desc

sigma level 0.995

missing_value

32766

parent_stat

Mean of Ensemble Spread

precision

3

scale_factor

0.001

standard_name

relative_humidity

statistic

Mean of Ensemble Spread

statistic_note

These values represent a time mean of the 4 times daily ensemble spreads and are not the ensemble mean spreads of monthly averages. To get that value, you will need to divide the time-averaged variance by the number of effective independent times (which is related to the autocorrelation of that variable)

units

percent

unpacked_valid_range

[ 0.0 65.530998 ]

valid_range

[ -32766 32765 ]

var_desc

Relative Humidity

standard units*

0.01

References

Compo, G. P., J. S. Whitaker, P. D. Sardeshmukh, N. Matsui, R. J. Allan, X. Yin, B. E. Gleason, R. S. Vose, G. Rutledge, P. Bessemoulin, S. Bronnimann, M. Brunet, R. I. Crouthamel, A. N. Grant, P. Y. Groisman, P. D. Jones, M. Kruk, A. C. Kruger, G. J. Marshall, M. Maugeri, H. Y. Mok, O. Nordli, T. F. Ross, R. M. Trigo, X. L. Wang, S. D. Woodruff, S. J. Worley, 2011: The Twentieth Century Reanalysis Project. Quarterly J. Roy. Meteorol. Soc., 137, 1-28. DOI: 10.1002/qj.776.

Compo, G. P., J. S. Whitaker, and P. D. Sardeshmukh, 2006: Feasibility of a 100 year reanalysis using only surface pressure data. Bull. Amer. Met. Soc., 87, 175-190

Whitaker, J. S., G. P. Compo, X. Wei, and T. M. Hamill, 2004: Reanalysis without radiosondes using ensemble data assimilation. Mon. Wea. Rev., 132, 1190-1200.

Last updated: Wed, 13 Feb 2019 20:27:28 GMT