Effective Hydrologic Angular Momentum Functions (HAM) - Product metadata

effective angular momentum functions from hydrological (land) mass and motion terms
File units : dimensionless earth rotation excitation functions

GFZ provides these data as Associated Product Centre by order of the International Earth Rotation and Reference System Service (IERS). The data is public availably without any warranty of any kind what so ever, either express or implied, including warranties of merchantability. GFZ shall not be liable for incidental, consequential, or special consequences arising out of the use of this data.

operational_AAM/
ESMGFZ_AAM_v1.0_03h_yyyy.asc daily updated yearly AAM file
1976-01-01 until now

operational_OAM/
ESMGFZ_OAM_v1.0_03h_yyyy.asc daily updated yearly OAM file
1976-01-01 until now

operational_HAM/
ESMGFZ_HAM_v1.2_24h_yyyy.asc daily updated yearly HAM file
1976-01-01 until now

-----------------------------------------------------------------------------------------

Data Description:

Data are values of effective angular momentum functions (EAM) of the atmosphere, the ocean, and land hydrology as calculated from 6-hourly ECMWF (European Centre for Medium-range Weather Forecasts) operational atmospheric forcing data by means of theMax Planck Institute Ocean Model (MPIOM) and the Land Surface Discharge Model(LSDM). All the data is processed consistently to the GRACE de-aliasing products AOD1BRelease 06. Model description and citation info is given in the references at the end of this file.

ftp://ig2-dmz.gfz-potsdam.de/EAM/README

YYYY MM DD HH MJD mass term(x,y,z) motion term(x,y,z)

ASCII

geophysical fluids, models

Deutsches GeoForschungsZentrum GFZ
Dep. 1: Geodesy and Remote Sensing
Sec. 1.3: Earth System Modelling

onLine

ftp://esmdata.gfz-potsdam.de/EAM/operational_HAM/