v3.9

What's Changed

• Landmask demo by @lee1043 in #1233
• Update development team member list by @lee1043 in #1238
• Update README.md by @lee1043 in #1243
• SW review preparation by @lee1043 in #1242
• Sample setup files for E3SM zppy workflow by @lee1043 in #1240
• Create Database API by @kristinchang3 in #1246
• ENSO portrait plot by @lee1043 in #1245
• Add cmec settings file for extremes by @acordonez in #1249
• Add 2025 NCA5 shapefiles by @acordonez in #1244
• Update index.rst by @lee1043 in #1250
• Add parallel execution scripts for sea ice by @acordonez in #1099
• obs4mips catalogue generation by @lee1043 in #1248
• Update CMIP5 Historical data version number in database.py by @kristinchang3 in #1251
• Add Fig 8 metrics to sea ice package by @acordonez in #1168
• Adding parameter to database API by @kristinchang3 in #1255
• Remove dimensions key from CMEC JSON by @acordonez in #1257
• Replace NaN with None in CMEC JSON by @acordonez in #1259
• Decision relevant metrics by @acordonez in #1131
• obs4mip clims for PMP mean clim by @lee1043 in #1260
• clean up clim ref data download link by @lee1043 in #1261
• Mean clim demo info update by @lee1043 in #1262
• demo 1b patch by @lee1043 in #1263
• improve title by @lee1043 in #1264
• Option to turn off conda use in the code by @lee1043 in #1266
• New version release preparation for v3.9 by @lee1043 in #1267

Full Changelog: v3.8.2...v3.9