;+ ; NAME: ; thm_crib_greenland_gmag.pro ; ; PURPOSE: ; crib sheet demonstrating loading GMAG data from Greenland stations ; ; CATEGORY: ; THEMIS-SOC ; ; CALLING SEQUENCE: ; .run thm_crib_greenland_gmag.pro ; ; In addition to the NRSQ site included in the standard THEMIS GMAG ; data distribution, Jurgen Matzka(jrgm@space.dtu.dk) from the Technical ; University of Denmark has made data gmag data available from the DTU(previously DMI) and ; the TGO gmag networks. Availability is 2007 through to the present. ; Although not all gmags are available at all times. ; To access these data, simply use the program thm_load_gmag ; More DMI data can be added upon request. Otherwise, THEMIS archives will be updated ; approximately every 3 months. ; ; WARNING: As with all GMAG data, users should be careful to verify data units and coordinate ; systems, as calibrations can drift from true values over time. Users should be particularly ; careful with the older data from the DMI/DTU network. ; In particular, DMI/DTU data from the first part of 2009 and earlier is uncalibrated. ; ; print, "--- Start of crib sheet ---" thm_load_gmag, trange = ['2009-01-01', '2009-01-02'] ; loads all sites for 1-jan-2009, icluding the greenland stations. The ; greenland sites are handled in the same way as the other GMAG sites. ; ;To get data for individual sites, use the site keyword with one of the following values: ; ; amk and atu bfe bjn dmh dnb dob don fhb gdh ghb hop jck kar kuv lyr ; nal naq nor nrd roe rvk sco skt sol sor stf svs tdc thl tro umq upn ; ; These names correspond to gmags at these locations: ; Ammassalik(Tasiilaq) Andenes Attu Brorfelde Bjornoya Danmarkshavn Dombas Donna Paamiut(Frederickshap) Qeqertarsuaq(Godhavn) Nuuk(Godthap) Hopen Jackvik Karmoy ; Kullorsuaq Longyearbyen NyAlesund Naqsarsuaq Nordkapp Nord Roemoe Rorvik Ittoqqortoormiit Maniitsoq(SukkerToppen) Solund Soroya ; Kangerlussuaq(SondreStromFjord)Savissivik TristanDaCunha Qaanaaq(Thule) Tromso Umanaq Upernavik ; Detailed info on DTU/TGO sites is here: ; http://flux.phys.uit.no/geomag.html ; thm_load_gmag, trange = ['2009-01-01', '2009-01-02'], site = ['amk', 'gdh'] ;or thm_load_gmag, trange = ['2009-01-01', '2009-01-02'], site = ['amk gdh'] ;etc... ; To load all sites from the TGO network use the keyword /tgo_sites ; The sites in the tgo network are: ; and bjn dob don hop jck kar lyr nal nor rvk sol sor tro thm_load_gmag, trange = ['2009-01-01','2009-01-02'], /tgo_sites ; To load all sites from the DTU network use the keyword /dtu_sites ; The sites in the dtu network are: ; amk atu bfe dmh fhb gdh ghb kuv naq nrd roe sco skt stf svs tdc thl umq upn ; The sites atu, dmh, dnb (not operational), nrd, svs are not currently loaded with the /dtu_sites keyword ; because only uncalibrated data exists, thus the command below will load ; amk, bfe, fhb, gdh, ghb, kuv, naq, roe, sco, skt, stf, tdc, thl, umq, upn if available for the chosen date range. ; Warning: Data from 2009 or earlier from these sites may also be uncalibrated. thm_load_gmag, trange = ['2009-12-01', '2009-12-02'], /dtu_sites ; The keywords /tgo_sites, /dtu_sites can be used together to load both TGO and DTU network sites. ;The other keyword inputs for thm_load_gmag, ;(/subtract_average, /subtract_median, /valid_names, etc...) still ;work. See THM_CRIB_GMAG in this directory for examples. ;If this data is used in a publication, please acknowledge the source: ;"Tromsø Geophysical Observatory, University of Tromsø, Norway for use of the Greenland & Norway magnetometer data" ; ; print, "--- End of crib sheet ---" End