2025 MONet Summer Soil Sampling Call

Submit Proposal

The Environmental Molecular Sciences Laboratory (EMSL) is seeking small-scope proposal submissions for summer soil sampling contributions to EMSL’s Molecular Observation Network (MONet). MONet received the maximum number of large-scope proposals for 2025 and will not be accepting large-scope proposals at this time.

Through this small-scope call, approved principal investigators (PIs) and their teams will collect soil samples during the summer and send their samples to EMSL for analysis. EMSL scientists will analyze soil cores using standardized workflows and generate a suite of advanced data products. These data products include high-resolution compositional parameters of organic matter, measured using EMSL’s high-field Fourier-transform ion cyclotron resonance (FTICR) mass spectrometer; soil pore network parameters, measured using X-ray computed tomography (XCT); and annotated metagenome sequences, provided through a partnership with the Joint Genome Institute (JGI).

A list of all Soil Function Call data types is available for review.

We invite summer submissions from most ecoregions and land usage types. MONet soil sampling proposals for water-saturated soils to a depth of 30 cm or soils with overlying water will not be accepted. An Excel spreadsheet version of the ecoregions is available for review. Small scope proposals will be evaluated based on the guidance in this call, environmental compliance, and the validation of geographic field site locations. Proposal submissions that are not completed in entirety will be automatically rejected. PIs can only have one MONet project per year.

Proposals will be prioritized for acceptance in the chronological order in which they are received (proposals received first that pass review will be awarded first). The exception to this policy will be proposals that require exceptionally long environmental compliance review.

Proposal Submission and Timelines

Summer 2025 Sampling:

Proposal Submission: March 18 to April 17, 2025
Decision Notice: Mid-May 2025
Sampling Period: June 2025 to August 2025

Soil Function Call decision notices will be communicated from emsl@pnnl.gov.

The full proposal calendar is available for review.

Proposal Types and Sample Submission

Small and large research teams are invited to submit proposals to the summer soil sampling call. We strongly encourage the submission of proposals that align with the MONet mission. Small project teams can submit a “Small Scope” Soil Function proposal for a maximum of 9 sample sets, while large project teams can submit a “Large Scope” proposal for 24 sample sets.

One sample set consists of 6 cores. This includes

one 30 cm deep core for soil biogeochemical measurements (i.e., DNA, FTICR)
- top and bottom 10 cm segments will be analyzed
one 30 cm deep core for physical measurements (i.e., XCT)
four 10 cm deep cores to account for soil heterogeneity.

Submitted proposals must collect at least a portion of the requested samples during the corresponding quarter’s sampling period. All submitters are encouraged to indicate if open data resources (i.e., ancillary data complementary to the Soil Function Call data types) exist for their respective research sites.

MONet received the maximum number of large-scope proposals for 2025.

	Small Scope	Large Scope – 2025 Capacity Reached
Sample Sets	≤9 Limited to sampling in one U.S. state	24* Sampling can span multiple U.S. states
Eligible Dates for Sample Collection	Same quarter as call + subsequent 3 quarters	Same quarter as call + subsequent 3 quarters
Anticipated Number of Projects per Year	17 to 25 projects (3 to 7 each quarter, except for winter)	1 to 2 projects
Qualifying Criteria	Aligns with call guidance (no inundated or frozen soil)	Requires open sharing of complementary data collected by the PI in publicly available and accessible repositories
Call Closing Date	Closing date stated for the applicable quarter or as soon as the number of approved proposals exceeds the quarterly allocation, whichever occurs first	Closing date stated for the applicable quarter
Proposal Documentation	Request form	Request form Letter of support from the lead organization/network Evidence of funded project (executive summary in a public domain) Evidence of funding status Complementary data resources

* Proposal authors should contact us at MONet@pnnl.gov in advance of submission if you are planning to prepare a large scope proposal.

Environmental Compliance

Because of PNNL’s contractual relationship with the U.S. Department of Energy, compliance with Federal, state, and local environmental regulations must be completed prior to approval of any application. EMSL will perform an environmental compliance review in collaboration with the PI.

Proposals with a long compliance review may not fit the approval timeline of the specific requested quarterly call.

We ask PIs to please provide complete and accurate documentation and respond to compliance team requests as quickly as possible to help ensure a timely process. Please note that an access agreement needs to be appended to the request form for each landowner. An access agreement is a formal letter or permit indicating explicit access granted to the PI to sample soil by a manager/supervisor of their field sites. Review examples of access agreements. Failure to do so will result in an automatic proposal rejection.