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Dr. Johannes Lehmann

Professor — Cornell University

Methodology focus

Liberty Hyde Bailey Professor at Cornell University. The foundational biochar scientist globally. His long-running work on biochar stability and residence time is the core scientific basis for any biochar crediting standard.

Trellison / LedgerWell intersection. Biochar crediting standard-setter.

Affiliation
Cornell University
Role
Professor
Axis
Nature-Based MRV
Tier
Tier 3

Selected publications

Alignment with proof packs

Their methodology / roleProof-pack / Trellison fit
Biochar residence-time distributionProof-pack permanence modelling must account for Lehmann's distribution results
Biochar standardsProof-pack biochar schema aligns with IBI/EBC standards Lehmann helped shape

Collaboration concepts

Concept 1

Biochar proof-pack schema paper with residence-time distribution

Formalise biochar-specific proof-pack fields.

Concept 2

Cornell / Trellison biochar MRV field study

Deployment-scale study with proof-pack instrumentation.

Concept 3

IBI standard alignment brief

Joint brief with International Biochar Initiative.

Outreach approach

A draft opening message previously appeared here. It has been withdrawn from publication and archived internally. No contact has been made. Outreach drafts are not published against a named individual prior to contact and clearance.

What we do not ask for

  • Endorsement of Trellison, LedgerWell, DaedArch, or any affiliated entity.
  • Exclusivity or first-look rights on research findings.
  • Unpaid labour. Any advisor role is compensated with a modest honorarium and disclosed on the record.
Disclosure: Compiled from public sources through April 2026. Inclusion does not imply endorsement, affiliation, or reciprocal interest. Corrections: About.

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