Where does “paleoclimatological” come from?

paleoclimatological (English) comes from English climatological, from English climatology, from English climate, from Middle English climat, from Old French climat, from Latin clima, from Ancient Greek κλίμα, from Ancient Greek κλίνω — to cover; to incline.

Ancestry of “paleoclimatological”, step by step

paleoclimatological traces back through two separate lines of ancestry.

via English climatological

StepLanguageWordMeaning
1EnglishclimatologicalOf or pertaining to climatology
2EnglishclimatologyThe science that deals with climates, and...
3EnglishclimateAn area of the earth's surface between two...
4Middle Englishclimat
5Old Frenchclimat
6Latinclimaslope, inclination; A Roman unit of area...
7Ancient Greekκλίμαa slope, incline, inclination; the supposed slope...
8Ancient Greekκλίνωto bend, slant; to cause to give way, cause to...
9Proto-Indo-Europeanḱley-to shelter, cover; to lean, slope, incline
10Proto-Indo-Europeanḱel-to cover; to incline

via English paleo

StepLanguageWordMeaning
1EnglishpaleoClipping of paleodiet
2Hawaiianleovoice; sound; command; verbal message
3Proto-Polynesianleovoice; language; speech
4Proto-Oceanicleqo
5Proto-Oceanic*(qa-)liqoʀthroat front part of the neck
6Proto-Eastern Malayo-Polynesian*liqəʀ
7Proto-Central-Eastern Malayo-Polynesian*liqəʀ
8Proto-Malayo-Polynesianliqəʀneck
9Proto-Austronesianliqəʀneck
Every word from Proto-Indo-European ḱel-Every word from Proto-Indo-European ḱley-Every word from Ancient Greek κλίνω