Effective Hydrological Angular Momentum Functions (HAM) File name : ESMGFZ_HAM_v1.2_24h_2023.asc File contents : effective angular momentum functions from hydrological (land) mass and motion terms File units : dimensionless earth rotation excitation functions Issue date : 2023-03-24 Version number : v1.2 References : Dobslaw, H., R. Dill, A. Groetzsch, A. Brzezinski, and M. Thomas (2010), Seasonal polar motion excitation from numerical models of atmosphere, ocean, and continental hydrosphere, J. Geophys. Res., doi:10.1029/2009JB007127 Contact : Henryk Dobslaw, dobslaw@gfz-potsdam.de Affiliation : Deutsches GeoForschungsZentrum GFZ Dep. 1: Geodesy and Remote Sensing Sec. 1.3: Earth System Modelling Telegrafenberg 14473 Potsdam, Germany Temporal domain : 01.01.2023 through 23.03.2023 (12:00 UTC) Temporal resolution : 24h Number of data records : 82 Subtracted mean value : mean from 2003-01-01 to 2014-12-31 (only x-, y-, z-component mass terms) -1.722266235718563e-07 1.442803309340720e-06 2.052039186123164e-08 Hydrological model : Land Surface Discharge Model (LSDM) Horizontal domain : global, continental land surface Horizontal resolution : 0.5 x 0.5 degree (regular grid) Vertical resolution : 1 surface layer Hydrologic model forcing : Precipitation : daily sum from 3h ECMWF operational model (short-term forecasts) Evaporation : daily sum from 3h ECMWF operational model (short-term forecasts) Temperature : daily average from 6h ECMWF operational model (analyses) Data assimilated : None Notes : These HAMs are part of a set of consistently processed Earth rotation excitation function (AAM, OAM, HAM). The ocean model MPIOM and the hydrological model LSDM were forced consistently with operational analysis data from the ECMWF. Further references to be mentioned, when LSDM data are used: Dill, R., Hydrological model LSDM for operational Earth rotation and gravity field variations. GFZ Scientific Technical Report STR08/09, 2008 ------------------------------------------------------------------------------------------------------------------------------------------------------ YYYY MM DD HH MJD HAM mass term HAM motion term x-component y-component z-component x-component y-component z-component 2023 01 01 12 59945.500 -1.081467119191917e-07 1.902437929607600e-07 1.004194804825960e-09 -2.681792935291250e-11 -1.413717971564390e-11 2.542550184976750e-13 2023 01 02 12 59946.500 -1.077226827494437e-07 1.915233874722700e-07 1.043068840773258e-09 -2.727924418656980e-11 -1.476437926479840e-11 2.549570805771490e-13 2023 01 03 12 59947.500 -1.086229733632467e-07 1.941253592375400e-07 1.085121213903958e-09 -2.766625644971570e-11 -1.537017881210090e-11 2.556508285204770e-13 2023 01 04 12 59948.500 -1.103404356415907e-07 1.937491867896300e-07 1.130791702560859e-09 -2.814574851116300e-11 -1.600098624799100e-11 2.564036393961760e-13 2023 01 05 12 59949.500 -1.101121341274847e-07 1.945832567253499e-07 1.176107211560059e-09 -2.873701924671140e-11 -1.673189317019710e-11 2.571367544367850e-13 2023 01 06 12 59950.500 -1.093948465096047e-07 1.936683823525199e-07 1.205704113341660e-09 -2.958651328182200e-11 -1.756018759160470e-11 2.584000204147950e-13 2023 01 07 12 59951.500 -1.094631654379597e-07 1.936974535711199e-07 1.224910057430158e-09 -3.040240266748850e-11 -1.837698908405220e-11 2.598244509402290e-13 2023 01 08 12 59952.500 -1.099022430903187e-07 1.942986244555399e-07 1.245259460911958e-09 -3.121626559098070e-11 -1.919354985778310e-11 2.612553577479540e-13 2023 01 09 12 59953.500 -1.107670292446877e-07 1.935776581548598e-07 1.265124498001158e-09 -3.215427905841100e-11 -2.004329258525260e-11 2.627926014882670e-13 2023 01 10 12 59954.500 -1.119151029352997e-07 1.918822823884899e-07 1.289036527644660e-09 -3.313688462568040e-11 -2.096194481667650e-11 2.648700610785120e-13 2023 01 11 12 59955.500 -1.121202214678707e-07 1.911167934328499e-07 1.311351418531060e-09 -3.407300285668510e-11 -2.182926243654410e-11 2.671450377152970e-13 2023 01 12 12 59956.500 -1.111911665408757e-07 1.925019167639399e-07 1.341929459221258e-09 -3.492732741856900e-11 -2.269225294580690e-11 2.693825048643520e-13 2023 01 13 12 59957.500 -1.095623587584037e-07 1.929460924721000e-07 1.375123280323658e-09 -3.557489216539210e-11 -2.352906470477130e-11 2.716234010465750e-13 2023 01 14 12 59958.500 -1.097469216329067e-07 1.933330872972099e-07 1.392092137169458e-09 -3.614814843129910e-11 -2.438026921121480e-11 2.738665782002850e-13 2023 01 15 12 59959.500 -1.100721696034177e-07 1.945526766883399e-07 1.409957048703359e-09 -3.675013951512980e-11 -2.518482672342600e-11 2.761286911728220e-13 2023 01 16 12 59960.500 -1.111963065015427e-07 1.977478218438100e-07 1.429796526554357e-09 -3.724431168748850e-11 -2.591807757254180e-11 2.785557417700540e-13 2023 01 17 12 59961.500 -1.129260355694817e-07 1.996824614140500e-07 1.452137641629359e-09 -3.768002915266940e-11 -2.658557829390430e-11 2.811427077644370e-13 2023 01 18 12 59962.500 -1.132220444916977e-07 2.014966117367999e-07 1.473797684512159e-09 -3.813458274992730e-11 -2.724333295977090e-11 2.839191197684120e-13 2023 01 19 12 59963.500 -1.128568083758797e-07 2.037094373013399e-07 1.506956505438659e-09 -3.872294466233440e-11 -2.795327310771940e-11 2.871576897409620e-13 2023 01 20 12 59964.500 -1.110520679240277e-07 2.038300322931699e-07 1.528986507718959e-09 -3.935105761020950e-11 -2.865019180884270e-11 2.906976760443100e-13 2023 01 21 12 59965.500 -1.087014645386057e-07 2.051733660152800e-07 1.547783053751360e-09 -3.998846384301020e-11 -2.937371118424200e-11 2.943196181911140e-13 2023 01 22 12 59966.500 -1.060710185511337e-07 2.082472950032999e-07 1.572069979035460e-09 -4.060688188578440e-11 -3.016439976108310e-11 2.981054236930640e-13 2023 01 23 12 59967.500 -1.040493805936457e-07 2.105778290684899e-07 1.590288806815160e-09 -4.121561268951900e-11 -3.089640877357020e-11 3.021351436226820e-13 2023 01 24 12 59968.500 -1.024589080384897e-07 2.120377547151198e-07 1.604766743774057e-09 -4.181982782448920e-11 -3.155108954831890e-11 3.062131672191910e-13 2023 01 25 12 59969.500 -1.006639504225767e-07 2.152875591890799e-07 1.623775894038359e-09 -4.238042379634940e-11 -3.224872293464640e-11 3.103364878731260e-13 2023 01 26 12 59970.500 -1.002996848522957e-07 2.180138829689898e-07 1.643903940410157e-09 -4.292908489907570e-11 -3.292920200473710e-11 3.146386655010410e-13 2023 01 27 12 59971.500 -1.011737564497717e-07 2.182771240874400e-07 1.656494856713760e-09 -4.355559988818390e-11 -3.358941840423460e-11 3.191065896851460e-13 2023 01 28 12 59972.500 -1.018169799984837e-07 2.179344079693899e-07 1.658539338005659e-09 -4.422463730997130e-11 -3.423893467800460e-11 3.236775258604380e-13 2023 01 29 12 59973.500 -1.023280743244297e-07 2.178449333382299e-07 1.673618078806757e-09 -4.488433120677920e-11 -3.483018746537520e-11 3.279928380454340e-13 2023 01 30 12 59974.500 -1.026252894127477e-07 2.176594945048698e-07 1.702574604772560e-09 -4.561821793639960e-11 -3.544557968978950e-11 3.324554652292620e-13 2023 01 31 12 59975.500 -1.024115215766307e-07 2.176413215698600e-07 1.723634474671158e-09 -4.637693304539270e-11 -3.605919799386700e-11 3.368833255960270e-13 2023 02 01 12 59976.500 -1.022095231592747e-07 2.169986602963298e-07 1.739684068521358e-09 -4.722063086400110e-11 -3.670705908927140e-11 3.412497840260500e-13 2023 02 02 12 59977.500 -1.025347811738357e-07 2.161842105957098e-07 1.750475047389358e-09 -4.804738701906080e-11 -3.742155277735720e-11 3.458303628890660e-13 2023 02 03 12 59978.500 -1.018302356372657e-07 2.140875545880200e-07 1.758266986364458e-09 -4.889540850909460e-11 -3.811541705529370e-11 3.504459430219720e-13 2023 02 04 12 59979.500 -1.008873061125987e-07 2.128381261821899e-07 1.771119146337258e-09 -4.982044495567750e-11 -3.890270332054580e-11 3.553144000774470e-13 2023 02 05 12 59980.500 -1.006158906719777e-07 2.127892041427199e-07 1.785838725272158e-09 -5.073526343608540e-11 -3.971127046047460e-11 3.602460637999770e-13 2023 02 06 12 59981.500 -9.962191552178069e-08 2.125637034658698e-07 1.794875455750260e-09 -5.164396335709090e-11 -4.049023247678680e-11 3.650699920950370e-13 2023 02 07 12 59982.500 -9.848184734444470e-08 2.126554551218599e-07 1.805431911797858e-09 -5.253348868221010e-11 -4.122022668797730e-11 3.701064978750490e-13 2023 02 08 12 59983.500 -9.718316797664969e-08 2.126314066113000e-07 1.825210306246458e-09 -5.325597621659120e-11 -4.188689918514820e-11 3.755676045278250e-13 2023 02 09 12 59984.500 -9.603337837398367e-08 2.130205253263998e-07 1.837899861722160e-09 -5.402109319643610e-11 -4.256463869518980e-11 3.809705683169270e-13 2023 02 10 12 59985.500 -9.486860061933570e-08 2.131474037453200e-07 1.848250590101958e-09 -5.471124382897860e-11 -4.315175691316850e-11 3.864025635969460e-13 2023 02 11 12 59986.500 -9.367837227062769e-08 2.138358751816600e-07 1.857670699003358e-09 -5.534785962461520e-11 -4.373859594192680e-11 3.923223215909830e-13 2023 02 12 12 59987.500 -9.290129432695869e-08 2.133719630481500e-07 1.864300684811757e-09 -5.595508259592610e-11 -4.439384680946730e-11 3.980439482276300e-13 2023 02 13 12 59988.500 -9.368588087601868e-08 2.131052355566399e-07 1.855663790760557e-09 -5.655868771922280e-11 -4.494058214171820e-11 4.036377637058600e-13 2023 02 14 12 59989.500 -9.393554874807571e-08 2.140189147479699e-07 1.859791284662357e-09 -5.718125255348130e-11 -4.544006158905500e-11 4.092622546036870e-13 2023 02 15 12 59990.500 -9.348123239647570e-08 2.149516916551900e-07 1.874045120727760e-09 -5.776065402385330e-11 -4.588401669695760e-11 4.149815653728930e-13 2023 02 16 12 59991.500 -9.301559191269869e-08 2.161685443017400e-07 1.894146516380458e-09 -5.819098001029730e-11 -4.627219557374730e-11 4.205655896126180e-13 2023 02 17 12 59992.500 -9.232375895844268e-08 2.155747283012698e-07 1.911175980517759e-09 -5.866465998868660e-11 -4.662388642912700e-11 4.258103043181250e-13 2023 02 18 12 59993.500 -9.169393149898572e-08 2.138887691369000e-07 1.934103673960057e-09 -5.943403620636469e-11 -4.711647316099100e-11 4.311507702175390e-13 2023 02 19 12 59994.500 -9.212652080634368e-08 2.132343090859700e-07 1.944942510222157e-09 -6.035099411824521e-11 -4.765153191987130e-11 4.368936029586770e-13 2023 02 20 12 59995.500 -9.296841404078671e-08 2.124038915607198e-07 1.954628172776160e-09 -6.143033933809830e-11 -4.827269071175630e-11 4.425754832500280e-13 2023 02 21 12 59996.500 -9.391867202440271e-08 2.131180823184099e-07 1.962013783327459e-09 -6.258507170798680e-11 -4.893537250931050e-11 4.485228344270880e-13 2023 02 22 12 59997.500 -9.420998442807670e-08 2.159817659092898e-07 1.979921561764059e-09 -6.377421244518469e-11 -4.961388630300630e-11 4.540281518505890e-13 2023 02 23 12 59998.500 -9.447651795477768e-08 2.173542005071799e-07 1.989893634940558e-09 -6.483743050058140e-11 -5.023485564124590e-11 4.595305246077980e-13 2023 02 24 12 59999.500 -9.579636435821269e-08 2.174629902188498e-07 1.993890195252459e-09 -6.578278328063550e-11 -5.072901165730480e-11 4.648160274872910e-13 2023 02 25 12 60000.500 -9.656208213801869e-08 2.182670609160098e-07 1.996400749127759e-09 -6.664744367170460e-11 -5.116235951769430e-11 4.699402554544750e-13 2023 02 26 12 60001.500 -9.702916598481570e-08 2.188185702710700e-07 2.016383181211260e-09 -6.744689167894910e-11 -5.154338355056690e-11 4.748906077559970e-13 2023 02 27 12 60002.500 -9.755865830592772e-08 2.217048246386100e-07 2.044851511117959e-09 -6.836342932625680e-11 -5.196492633776800e-11 4.800555303476060e-13 2023 02 28 12 60003.500 -9.708467325874671e-08 2.235103491222900e-07 2.063707713906060e-09 -6.920283602001270e-11 -5.232247108164570e-11 4.851545782097320e-13 2023 03 01 12 60004.500 -9.648766440909072e-08 2.252160208672000e-07 2.069764620533160e-09 -6.993623536257350e-11 -5.257002936016420e-11 4.902174067768560e-13 2023 03 02 12 60005.500 -9.636927666002570e-08 2.270827747630999e-07 2.078833440037760e-09 -7.049210826139900e-11 -5.278837866270040e-11 4.950987713805760e-13 2023 03 03 12 60006.500 -9.631571594902672e-08 2.301882015930300e-07 2.088599611345359e-09 -7.082761781240540e-11 -5.295429921848000e-11 4.997891734746440e-13 2023 03 04 12 60007.500 -9.646602060311568e-08 2.320711378556198e-07 2.089637148974260e-09 -7.113331611811481e-11 -5.312946684976990e-11 5.045819416476350e-13 2023 03 05 12 60008.500 -9.649137652210468e-08 2.320130484729800e-07 2.093238662654257e-09 -7.144014896612940e-11 -5.328479541559770e-11 5.091560004858500e-13 2023 03 06 12 60009.500 -9.706823671092972e-08 2.320193644677399e-07 2.099507172558558e-09 -7.175670845190200e-11 -5.343267168820920e-11 5.140830592380230e-13 2023 03 07 12 60010.500 -9.802547590080171e-08 2.307271937720500e-07 2.096989673364659e-09 -7.194535038590710e-11 -5.361219272764880e-11 5.189383979386380e-13 2023 03 08 12 60011.500 -1.002974215005907e-07 2.292511826030900e-07 2.099948253869260e-09 -7.213208118783800e-11 -5.375906965281490e-11 5.236829116979740e-13 2023 03 09 12 60012.500 -1.019633315225987e-07 2.287937967812399e-07 2.107461991825059e-09 -7.227952854955700e-11 -5.387439391720890e-11 5.281665961022240e-13 2023 03 10 12 60013.500 -1.020266416669767e-07 2.290684677662700e-07 2.133327112074660e-09 -7.246428657504120e-11 -5.410999384565810e-11 5.325997965480190e-13 2023 03 11 12 60014.500 -1.022520415915307e-07 2.274745249318600e-07 2.166619462664060e-09 -7.266255700380870e-11 -5.434315614577610e-11 5.370550171881100e-13 2023 03 12 12 60015.500 -1.015421297545577e-07 2.251133681265899e-07 2.208294616089659e-09 -7.284857537196700e-11 -5.478918032906520e-11 5.420055067656280e-13 2023 03 13 12 60016.500 -9.978573600836772e-08 2.230040121003998e-07 2.242833438449660e-09 -7.337853519462140e-11 -5.543614796315870e-11 5.466354077114910e-13 2023 03 14 12 60017.500 -9.753860034930870e-08 2.216466071368099e-07 2.263857480443358e-09 -7.383711852118510e-11 -5.613342144486860e-11 5.511689878795340e-13 2023 03 15 12 60018.500 -9.564387392595368e-08 2.204600198587800e-07 2.285556736692657e-09 -7.439017069385910e-11 -5.690142662052560e-11 5.559754778105290e-13 2023 03 16 12 60019.500 -9.401620297207270e-08 2.183956536505799e-07 2.295473027260158e-09 -7.499102417869971e-11 -5.780325591043690e-11 5.614263000170250e-13 2023 03 17 12 60020.500 -9.244648872788268e-08 2.179663630287198e-07 2.322616166939259e-09 -7.565151176496350e-11 -5.871065721815450e-11 5.666865761040900e-13 2023 03 18 12 60021.500 -9.108321257084470e-08 2.138025971588100e-07 2.339343088001057e-09 -7.645633848235260e-11 -5.960849585727210e-11 5.720895765031550e-13 2023 03 19 12 60022.500 -9.019340180550072e-08 2.112424675325099e-07 2.343217855174459e-09 -7.742771843770950e-11 -6.050101107708231e-11 5.766661075807560e-13 2023 03 20 12 60023.500 -8.947844779430672e-08 2.092614657088299e-07 2.359401174030860e-09 -7.859046014985330e-11 -6.155050961836860e-11 5.807838848736020e-13 2023 03 21 12 60024.500 -8.772190383825471e-08 2.064421751921598e-07 2.382289683800057e-09 -7.971237320776800e-11 -6.261654694232720e-11 5.845974635653900e-13 2023 03 22 12 60025.500 -8.536636988993169e-08 2.028916221682399e-07 2.393935310364757e-09 -8.090099461594670e-11 -6.373303016926260e-11 5.883271708066720e-13 2023 03 23 12 60026.500 -8.321184078612868e-08 2.007862336623099e-07 2.411036417666757e-09 -8.218238014605720e-11 -6.502404625301730e-11 5.922473183020830e-13