| Launch site | Date | Scientific Experiment | Payload landing site |
 | Trapani (IT) | ??/?? | -- No Data -- | --- No data --- | | | |
 | ESRANGE (SE) | 1/18 | ELHYSA (Etude de L'Hygromérie Stratosphérique) | --- No data --- | | | |
| ESRANGE (SE) | 1/21 | LABS (Laser Backscatter Sonde) | --- No data --- | | | |
| ESRANGE (SE) | 1/27 | MIPAS-B2 (Michelson Interferometer for Passive Atmospheric Sounding - Balloonborne) + SFINX | --- No data --- | | |  |
| ESRANGE (SE) | 1/27 | SAOZ (Systeme d'Analyse par Observation Zenithale) + DESCARTES | --- No data --- | | | |
| ESRANGE (SE) | 1/30 | ELHYSA (Etude de L'Hygromérie Stratosphérique) + DIRAC (Determination In situ by Rapid Analytical Chromatography) | --- No data --- | | | |
| ESRANGE (SE) | 2/6 | TRIPLE | --- No data --- | | | |
| ESRANGE (SE) | 2/6 | SAOZ + BRO + DESCARTES | --- No data --- | | | |
| ESRANGE (SE) | 2/8 | LABS (Laser Backscatter Sonde) | --- No data --- | | | |
| ESRANGE (SE) | 2/8 | LABS (Laser Backscatter Sonde) | --- No data --- | | | |
| ESRANGE (SE) | 2/10 | LPMA (Limb Profile Monitor of the Atmosphere) + DOAS | --- No data --- | | | |
| ESRANGE (SE) | 2/11 | AMON / HALOMAX | --- No data --- | | | |
| ESRANGE (SE) | 2/11 | BPS support flight | --- No data --- | | | |
| ESRANGE (SE) | 2/12 | BACKSCATTER | --- No data --- | | | |
| ESRANGE (SE) | 2/12 | BACKDOOR | --- No data --- | | | |
| ESRANGE (SE) | 2/12 | BACKSCATTER | --- No data --- | | | |
| ESRANGE (SE) | 2/18 | Technological flight 7 eng balloon model | --- No data --- | | | |
| ESRANGE (SE) | 2/18 | Technological flight ALLEGEE system | --- No data --- | | | |
| ESRANGE (SE) | 2/18 | SAOZ MIR | In Siberia on the russian federation. |  | | |
| ESRANGE (SE) | 2/19 | O3 / LABS | In the Canada coast at 54º 97' N - 56º 70' W | | | |
| ESRANGE (SE) | 2/22 | ORION | --- No data --- | | | |
| ESRANGE (SE) | 2/23 | SDLA-LAMA (Spectromètre à Diode Laser Accordable - Laser pour l'Analyse du Méthane Atmosphérique) | --- No data --- | | | |
 | Holloman AFB (NM) | 2/24 | Flight tested an over-the-horizon Global Positioning System, a "load bar" device for rotational stability, a "north-seeker" compass showing which way the gondola is pointing, a solar cell battery system | near Loving, New Mexico | | | |
| ESRANGE (SE) | 2/25 | -- No Data -- | --- No data --- | | | |
 | Aire Sur L'Adour (FR) | 4/15 | SAOZ, CH4 y O3 instruments | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 4/19 | Aire Sur L'Adour spring campaign opening flight | --- No data --- | | | |
| ESRANGE (SE) | 4/20 | TESTBILD | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 4/21 | SAOZ (Systeme d'Analyse par Observation Zenithale) + DIRAC (Determination In situ by Rapid Analytical Chromatography) y O3 (?) | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 4/28 | SALOMON (Spectroscopie d'Absorption Lunaire pour l'Observation des Minoritaires Ozone et Nox) | --- No data --- | | | |
 | Hyderabad (IN) | 4/29 | CRYOSAMPLER (Criogenic atmpospheric sampler) | No Data | | | |
| Aire Sur L'Adour (FR) | 4/29 | MIPAS-B2 (Michelson Interferometer for Passive Atmospheric Sounding - Balloonborne) + SFINX | --- No data --- | | | |
| ESRANGE (SE) | 5/3 | OZONE SAMPLER | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 5/3 | TRIPPLE / HALOMAX experience | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 5/5 | ELHYSA (Etude de L'Hygromérie Stratosphérique) + DIRAC (Determination In situ by Rapid Analytical Chromatography) | --- No data --- | | | |
| Ft. Sumner (NM) | 5/7 | LXeGRIT (Liquid Xenon Gama-Ray Imaging Telescope) | Near Fairview, Oklahoma. | | | |
| Aire Sur L'Adour (FR) | 5/10 | SDLA-LAMA (Spectromètre à Diode Laser Accordable - Laser pour l'Analyse du Méthane Atmosphérique) | --- No data --- | | | |
 | Sanriku (JP) | 5/15 | Test flight of a new model of overpressure "pumpkin" balloon. | --- No data --- | | | |
| Sanriku (JP) | 5/24 | HIGH ENERGY PRIMARY ELECTRONIC OBSERVATION | --- No data --- | | | |
| Ft. Sumner (NM) | 5/30 | HEAT pbar (High-Energy Antimatter Telescope) | South of Carlsbad Caverns National Park near the borderline between New Mexico and Texas | | | |
| Sanriku (JP) | 5/31 | Stratospheric Cryo sampling | --- No data --- | | | |
| Gap (FR) | 6/11 | Gap Tallard campaign opening flight | --- No data --- | | | |
| NSBF, Palestine (TX) | 6/14 | SOLAR CELL CALIBRATION | --- No data --- | | | |
| Gap (FR) | 6/17 | MACSIMS (Measurement of Atmospheric Constituents by Selective Ion Mass Spectrometry) | --- No data --- | | | |
| NSBF, Palestine (TX) | 6/17 | MAXIMA (Millimeter anisotropy experiment imaging array) | Payload was retrieved 350 miles from Palestine. | | | |
| Gap (FR) | 6/23 | VERDI | --- No data --- | | | |
| Gap (FR) | 6/25 | LPMA (Limb Profile Monitor of the Atmosphere) + DOAS | --- No data --- | | | |
| Gap (FR) | 6/29 | SPIRALE (Spectroscopie Infra-Rouge par Absorption de Laser Embarqué) | --- No data --- | | | |
| Gap (FR) | 6/30 | Technical test flight of the INMARSAT telemetry system | --- No data --- | | | |
| Trapani (IT) | 7/5 | COBY (?) | In Spain | | | |
| Gap (FR) | 7/6 | SAOZ (Systeme d'Analyse par Observation Zenithale) | --- No data --- | | | |
| NSBF, Palestine (TX) | 7/6 | SPRITES DETECTION | --- No data --- | | | |
| NSBF, Palestine (TX) | 7/6 | SOLAR CELL CALIBRATION | --- No data --- | | | |
| Gap (FR) | 7/7 | micro-RADIBAL (RADIomètre BALlon) | --- No data --- | | | |
 | Kamchatka (RU) | 7/7 | RUNJOB VIII (RUssia-Nippon JOint Balloon program) | --- No data --- | | | |
| Kamchatka (RU) | 7/12 | RUNJOB IX (RUssia-Nippon JOint Balloon program) | --- No data --- | | | |
| Kamchatka (RU) | 7/13 | RUNJOB X (RUssia-Nippon JOint Balloon program) | --- No data --- | | | |
| Kamchatka (RU) | 7/14 | RUNJOB XI (RUssia-Nippon JOint Balloon program) | --- No data --- | | | |
| Trapani (IT) | 7/17 | ARCHEOPS | Near Granja de Torre Hermosa, Badajoz, Spain | | | |
 | Lynn Lake (MB) | 8/1 | BESS (Balloon-borne Experiment with a Superconducting Spectrometer) | Reindeer Lake, Saskatchewan, Canadá | | | |
| Trapani (IT) | 8/2 | SAFIRE-B (Spectroscopy of the Atmosphere using Far InfraRed Emission - Balloon) + GPSR-MEBEX (GPS Reflections - Mediterranean Balloon Experiment) | Near Nerpio, a town in the Sierra de Segura, Albacete province of Huelva, Spain. | | | |
| Lynn Lake (MB) | 8/11 | BESS (Balloon-borne Experiment with a Superconducting Spectrometer) | --- No data --- | | | |
| Ottumwa (IA) | 8/14 | SPRITES DETECTION | No flight | | | |
| Ottumwa (IA) | 8/14 | SPRITES DETECTION | --- No data --- | | | |
| Lynn Lake (MB) | 8/17 | AESOP (Anti-Electron Sub Orbital Payload) + LEE (Low Energy Electrons) | --- No data --- | | | |
| Ottumwa (IA) | 8/21 | SPRITES DETECTION | --- No data --- | | | |
| ESRANGE (SE) | 8/26 | SKERRIES | By the lake Kitkiöjärvi near the finish border. | | | |
| Sanriku (JP) | 8/31 | Stratospheric ozone observation | --- No data --- | | | |
| Sanriku (JP) | 9/1 | Test flight of a new balloon made of a new ultra thin material (3.4 microns) | --- No data --- | | | |
| Sanriku (JP) | 9/2 | BETS (Balloon-borne Electron Telescope with Scintillating fibers) | --- No data --- | | | |
| Sanriku (JP) | 9/6 | Balloon engineering experiment | --- No data --- | | | |
| ESRANGE (SE) | 9/6 | TELEMETRY TEST | --- No data --- | | | |
| Ft. Sumner (NM) | 9/20 | TRACER (Transition Radiation Array for Cosmic Energetic Radiation) | 13 nm Northwest of Artesia NM, USA | | | |
| Ft. Sumner (NM) | 9/22 | PRONAOS (Projet National d'Astronomie Submillimetrique) | South of the city of Alamogordo | | | |
| Ft. Sumner (NM) | 10/3 | UPPER ATMOSPHERIC RESEARCH | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 10/6 | CASOLBA (CAlibration de cellules SOLaires sur vol BAllon) | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 10/11 | Ozone sampling instrument | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 10/12 | TM ALLEGEE | --- No data --- | | | |
| Aire Sur L'Adour (FR) | 10/21 | SAOZ + TM ALLEGEE | --- No data --- | | | |
| Ft. Sumner (NM) | 10/23 | ULDB (Ultra Long Duration Balloon) | --- No data --- | | | |
| ESRANGE (SE) | 11/9 | SKERRIES | --- No data --- | | | |
| ESRANGE (SE) | 11/11 | TELEMETRY TEST | --- No data --- | | | |
 | Andoya (NO) | 11/17 | SAOZ (Systeme d'Analyse par Observation Zenithale) + DESCARTES | At coordinates 69º 31' 08" North, 20º 31' 40" East. | | | |
| ESRANGE (SE) | 11/19 | OMS Gondola - Analizador de CO2 / Cromatografo LACE / Dual-beam In-Situ UV-Absorption Ozone Photometer / ALIAS II Laser Spectrometer (JPL) - Mediciones IN-SITU | --- No data --- | | | |
| Hyderabad (IN) | 11/25 | FPS100 (Fabry Perot Spectrometer) installed at the focal plane of the 100 cm TIFR balloon-borne FIR telescope | --- No data --- | | | |
| Hyderabad (IN) | 12/3 | FIRBE (Far InfraRed Balloon-borne Experiment) | 53 km from Hyderabad, India. | | | |
| ESRANGE (SE) | 12/3 | MKIV Infrared Spectrometer / SLS Microwave Instrument (both JPL) and DESCARTES instrument (IRF) | --- No data --- | | | |
| ESRANGE (SE) | 12/4 | AEROCLIPPER | --- No data --- | | | |
| ESRANGE (SE) | 12/4 | Theseo 2000 campaign opening flight | --- No data --- | | | |
| ESRANGE (SE) | 12/6 | AEROCLIPPER | --- No data --- | | | |
| ESRANGE (SE) | 12/10 | ETNA (Equipement de Télécommunication Numérique pour Aérostat) | --- No data --- | | | |
| ESRANGE (SE) | 12/15 | SKERRIES | --- No data --- | | | |
| ESRANGE (SE) | 12/17 | ETNA (Equipement de Télécommunication Numérique pour Aérostat) | --- No data --- | | | |
See launches from 1998
