Calibration, Validation of Satellites Products, Atmospheric Corrections and Radiative Transfer for science applications
| AAOT | Abracos_Hill | Abu_Al_Bukhoosh | AgiaMarina_Xyliatou |
| Agoufou | Al_Khaznah | Al_Qlaa | Alta_Floresta |
| Ames | Amity_Univ_Gurgaon | Anmyon | Arcachon |
| ARIAKE_TOWER | Arica | ARM_Darwin | ARM_Manacapuru |
| Ascension_Island | ATHENS-NOA | Aubiere_LAMP | Avignon |
| Bac_Giang | Bac_Lieu | Bach_Long_Vy | Badajoz |
| Baengnyeong | Bahrain | Bakersfield | Bambey-ISRA |
| Bandung | Bangkok | Banizoumbou | Barcelona |
| Bari_University | Beijing_RADI | Beijing-CAMS | Beijing |
| Belsk | Belterra | Ben_Salem | Bhola |
| Billerica | Blida | Bonanza_Creek | Bonanza |
| BONDVILLE | Bozeman | Bratts_Lake | Brookhaven |
| Brussels | Bucharest_Inoe | Bujumbura | Burjassot |
| Cabauw | Cabo_da_Roca | Caceres | Cairo_EMA_2 |
| Cairo_EMA | Cairo_University | Calhau | Camaguey |
| Campo_Grande_SONDA | Cape_Fuguei_Station | Cape_San_Juan | Capo_Verde |
| Carpentras | Cart_Site | CARTEL | CATUC_Bamenda |
| CCNY | CEILAP-BA | Chen-Kung_Univ | Chiang_Mai_Met_Sta |
| Chiayi | Chiba_University | Chilbolton | Chulalongkorn |
| Churchill | CLUJ_UBB | Columbia_SC | Concepcion |
| Corcoran | Coruna | COVE_SEAPRISM | COVE |
| CRPSM_Malindi | CUIABA-MIRANDA | Cuiaba | CUT-TEPAK |
| Dahkla | Dakar_Belair | Dakar | Dalanzadgad |
| Dalma | Darwin | DEWA_ResearchCentre | Dhabi |
| Dhadnah | Dhaka_University | Dibrugarh_Univ | Djougou |
| DMN_Maine_Soroa | Doi_Ang_Khang | Dongsha_Island | Douliu |
| DRAGON_Anmyeon | DRAGON_GangneungWNU | DRAGON_Guwol | DRAGON_Gwangju_GIST |
| DRAGON_Kongju_NU | DRAGON_Konkuk_Univ | DRAGON_Korea_Univ | DRAGON_Kyungil_Univ |
| DRAGON_Mokpo_NU | DRAGON_NIER | DRAGON_Pusan_NU | DRAGON_Soha |
| DRAGON_SPBRK | Dunkerque | Dushanbe | Easton_Airport |
| Eforie | Egbert | Eilat | El_Arenosillo |
| El_Farafra | EPA-NCU | Ersa | Etosha_Pan |
| Evora | Fang | Finokalia-FKL | Fontainebleau |
| Fort_McMurray | FORTH_CRETE | Fresno_2 | Fresno |
| Frioul | Fukuoka | FZJ-JOYCE | Galata_Platform |
| Gandhi_College | Gangneung_WNU | Georgia_Tech | Gobabeb |
| Gorongosa | Gosan_SNU | GOT_Seaprism | Gozo |
| Granada | Grand_Forks | GSFC | Guadeloup |
| Gual_Pahari | Gwangju_GIST | Halifax | Hamburg |
| Hamim | Hangzhou_City | Hankuk_UFS | Harvard_Forest |
| Hefei | Helgoland | Heng-Chun | HESS |
| Hokkaido_University | Homburi | Hong_Kong_Hok_Tsui | Hong_Kong_PolyU |
| Hong_Kong_Sheung | Howland | Hua_Hin | Huambo |
| Huelva | IASBS | Iasi_LOASL | ICIPE-Mbita |
| IER_Cinzana | IIT_KGP_EXT_Kolkata | Ilorin | IMAA_Potenza |
| IMC_Oristano | IMS-METU-ERDEMLI | ISDGM_CNR | Ispra |
| Jabiru | Jaipur | Jambi | Ji_Parana_SE |
| Jingtai | Kanpur | Kaohsiung | Karachi |
| Karlsruhe | Karunya_University | Kathmandu-Bode | KAUST_Campus |
| Kelowna_UAS | Koforidua_ANUC | KONZA_EDC | KORUS_Iksan |
| KORUS_Kyungpook_NU | KORUS_Mokpo_NU | KORUS_NIER | KORUS_UNIST_Ulsan |
| Kuwait_University | Kyiv | La_Laguna | La_Parguera |
| Lahore | Lake_Argyle | Lamezia_Terme | Lampedusa |
| LAMTO-STATION | Le_Fauga | Lecce_University | Leipzig |
| Lille | LISCO | Luang_Namtha | Lubango |
| Lumbini_North | Lumbini | MAARCO | Madrid |
| Maeson | Magurele_Inoe | Mainz | Malaga |
| Manaus_EMBRAPA | Mandalay_MTU | Manila_Observatory | Martova |
| Masdar_Institute | Maun_Tower | MCO-Hanimaadhoo | MD_Science_Center |
| Medenine-IRA | Meridian_DEQ | Messina | MetObs_Lindenberg |
| Mexico_City | Mezaira | Migal | Minsk |
| Misamfu | Missoula | Modena | Modesto |
| Moldova | Mongu_Inn | Mongu | Monterey |
| Moscow_MSU_MO | Mukdahan | Munich_University | Murcia |
| Mussafa | Mwinilunga | Namibe | Napoli_CeSMA |
| NASA_LaRC | NCU_Taiwan | Ndola | NEON_KONZ |
| NEON_ORNL | NEON_SCBI | NEON_UNDE | NEON_WREF |
| Nes_Ziona | New_Delhi_IMD | New_Delhi | NGHIA_DO |
| NhaTrang | Niamey | Nicosia | Niigata |
| Nong_Khai | Norfolk_State_Univ | Noto | NUIST |
| OHP_OBSERVATOIRE | Omkoi | Oostende | Osaka |
| Ouagadougou | Ouarzazate | Oujda | Oyster |
| Palaiseau | Palangkaraya | Palencia | Palma_de_Mallorca |
| Pantnagar | Paris | Pickle_Lake | Pimai |
| PNNL | Pokhara | Pretoria_CSIR-DPSS | Pune |
| Pusan_NU | Qena_SVU | Raciborz | Ragged_Point |
| Railroad_Valley | Ras_El_Ain | Rimrock | Rio_Branco |
| Rome_Tor_Vergata | Saada | SACOL | Saih_Salam |
| Sakeji_School | Santa_Cruz_Tenerife | SANTA_CRUZ_UTEPSA | Santiago_Beauchef |
| Sao_Paulo | Saturn_Island | SDSU_IPLab | SEDE_BOKER |
| SEGC_Lope_Gabon | Senanga | Seoul_SNU | SERC |
| Sevastopol | Sevilleta | Shagaya_Park | Shirahama |
| Shouxian | Silpakorn_Univ | Singapore | Sioux_Falls |
| Sir_Bu_Nuair | Sirmione_Museo_GC | Skukuza | SMART_POL |
| SMART | Solar_Village | Son_La | Songkhla_Met_Sta |
| Sra_Kaeo | St_Louis_University | Strzyzow | Taihu |
| Taipei_CWB | Tamanrasset_INM | Technion_Haifa_IL | Tenosique |
| The_Hague | Thessaloniki | Thompson_Farm | Timisoara |
| Tizi_Ouzou | Tomsk_22 | Tomsk | Toravere |
| Toronto | Toulon | Tsumkwe | TUBITAK_UZAY_Ankara |
| Tunis_Carthage | Tuxtla_Gutierrez | U_of_Wisconsin_SSEC | UAHuntsville |
| Ubon_Ratchathani | UCLA | UMBC | Umm_Al_Quwain |
| Univ_of_Houston | Univ_of_Lethbridge | Univ_of_Nevada-Reno | UPC-GEAB-Valledupar |
| USM_Penang | Ussuriysk | Valladolid | Venise |
| Vientiane | Villefranche | Walker_Branch | Wallops |
| WaveCIS_Site_CSI_6 | Weizmann_Institute | Welgegund | Windpoort |
| XiangHe | Xinglong | Xitun | Yakutsk |
| Yekaterinburg | Yellowknife_Aurora | Yonsei_University | Yulin |
| Zambezi | Zaragoza | Zinder_Airport | Zinder_DMN |
| Zvenigorod |