Production of definitive data from Indonesian geomagnetic observatories

Abstract. Measurement of the geomagnetic field in Indonesia is undertaken by Meteorological, Climatological, and Geophysical Agency (BMKG). Routine activities at each observatory include determination declination, inclination, total using absolute variation measurements. The oldest Tangerang (TNG), started 1957, followed Tuntungan (TUN) 1980, Tondano (TND) 1990, Pelabuhan Ratu (PLR) Kupang (KPG) 2000, Jayapura (JAY) 2012. One main obligations a to produce final versions data, released as definitive for year make them widely available both scientific non-scientific purposes, example World Data Centre Geomagnetism (WDC-G). Unfortunately, some Indonesian observatories do not share their data with WDC-G often have difficulty producing data. In addition, more basic problems still exist, such low-quality due anthropogenic or instrumental noise, lack data-processing knowledge, limited observer training. this study, we report on production from observatories, recommendations are provided about how improve quality. These methods approaches applicable other institutes seeking enhance quality utility, modelling space weather monitoring. years 2010 2018 now WDC-G.