Not logged in - Login
< back

Biogenic Workgroup

Contents [hide]

Collaborative Wiki Main Page

Inventory Collaborative Google Drive Link

Members

Co-leads: Jeff Vukovich (USEPA), Doug Boyer (TCEQ),

Brian Sullins (Alabama DEM), Byeong Kim (GA EPD), Miranda Kosty (TCEQ), Stephen Coe (Montana), Susanne Cotty (PA Region), Sylvia Vanderspek (CARB), Vanessa Crandell-Beck (Alaska), Tom Moore (Westar-WRAP), Jeremy Avise (CARB), Jiang Majong (CARB)

Coordination Committee Meetings

June 19, 2018

Attendees

Co-leads: Jeff Vukovich (USEPA), Doug Boyer (TCEQ)

Agenda

  • Roll Call
  • Review Minutes from Last Call
  • 6/20 large group call and Beta inventory plan
  • Update on BEIS3 data on Colorado St ftp site (May data; Vukovich)
  • Model vs Obs of isoprene flux at Prophet site in northern Michigan (Kosty)
  • MEGANv3 update: soil moisture stress run
  • Implementing AZ landuse in BEIS3 and MEGANv3 update (Vukovich and Boyer)
  • Revisit GA EPD county maps presented at last workgroup call
  • Next call July 17, 2018 at 330PM ET

Minutes/Notes

Action Items

May 15, 2018

Attendees

Co-leads: Jeff Vukovich (USEPA), Doug Boyer (TCEQ) Brian Sullins (Alabama DEM),Miranda Kosty (TCEQ), Stephen Coe (Montana), Susanne Cotty (PA Region), Jiang Majong (CARB), Josh Pope (PA Region) Guests: Alex Guenther, Tejas Shah, Greg Yarwood

Agenda

Minutes/Notes

  • MEGAN3 user guide, global input variables, emission factor processor (MEGAN-EFP), and model updates from the following weblink.
  • How is the landuse, ecotype, growth form, and individual tree species data used in MEGAN3 (not the preprocessor)? For example, can we calculate the gridded amount of Post Oak in Texas (or a specific county) in MEGAN3? If a specific state or local group wanted to update the landuse (or part of it) in MEGAN3, how would they go about doing that?
    • See Tree cover area description (dated May 15, 2018)
    • The referenced files are in comma-delimited (CSV) format and can be obtained from the MEGAN-EFP package.
    • Discussion occurred about MEGAN updating the landuse with help from Chris Geron (USEPA)
    • Suggestion made for Pima Co AZ group to interpolate their landuse to the 12km domain and MEGAN has capability to use new landuse pretty quickly
      • Must figure out which emission factor to use for new landuse types
  • Why are some emission rates zero in the MEGAN3 output (e.g., ALDX, TOL, XYL)?
    • MEGAN developers updated the species mapping for CB05 & CB6 such that no emitted VOCs are mapped to ALDX, TOL, XYL. They could delete output of these CB species to make the output files more compact.
  • MEGAN3 seems to have a broader diurnal profile of isoprene emission rates than BEIS (starts producing isoprene earlier and ends later; see slides 5 and 6 of https://drive.google.com/file/d/1LXEQNHBoFtB17x90TDMQel3cy3SOwykX/view?usp=sharing ). This was seen with MEGAN2.10 as well. Is this a function of how MEGAN interprets solar radiation?
    • MEGAN developers acknowledged a different canopy model setup could be the source of the differences
  • When using isoprene flux measurements be sure to bin the measurements based on wind direction
  • MEGAN has a soil moisture adjustment for isoprene emissions
    • If dry, isoprene emissions will be lower
    • Same approach for all veg types for this ISOP adjustment
  • GAEPD maps shown; suggest flip the percent difference plots so no yellow or less yellow
  • Isoprene flux measurements discussed
    • July 2016 data but need wind data in moles/s/cm2
  • May 2016 BEIS3 data on Colorado State ftp site may be corrupt
    • Need to check this soon

Action Items

  • Action Item: Check May 2016 BEIS3 data on Colorado St ftp site (Vukovich)
  • Action Item: Obtain associated wind data for isoprene flux measurements (Boyer)
  • Action Item: Test running MEGANv3 with soil moisture adjustment for isoprene emissions (Boyer)
  • Action Item: See if gridded landuse for MEGANv3 can now be created (Boyer, Vukovich)
  • Action Item: Attempt to quantify the impact of the solar radiation differences in models (Kosty)
  • Action Item: Improve difference and percent difference maps for emissions densities (GA EPD)
  • Action Item: Continue to investigate the implementation of updated landuse for Arizona in both models (PA Region, Vukovich, Boyer)

April 17, 2018

Attendees

Co-leads: Jeff Vukovich (USEPA), Doug Boyer (TCEQ) Brian Sullins (Alabama DEM), Byeong Kim (GA EPD), Miranda Kosty (TCEQ),Susanne Cotty (PA Region), Tom Moore (Westar-WRAP), Jeremy Avise (CARB), Jiang Majong (CARB)

Agenda

  • Roll Call
  • Review Minutes from Last Call
  • Accessing MEGANv3 and BEIS3 2016 data for May-Sept via Coloradost.edu site (Vukovich)
  • TCEQ MEGAN3-BEIS3 QA to date ppt (Kosty and Boyer)
  • Using Texas A&M code issues to look at hybrid BEIS3/MEGAN model results (Boyer)
  • Period of time to QA (Survey sent out recently)
  • Next call scheduled for May 15 at 330PM ET

Minutes/Notes

  • Reviewed Action Items from last call
    • PAMS data has isoprene observations (Jeremy provided info)
    • LADCO and other agencies who will be doing AQ modeling at some point are aware that BEIS3 and MEGANv3 AQ sensitivity modeling is needed
    • GAEPD provided 2016 ozone report that is on the workgroup's Google Drive
  • MEGANv3 and BEIS3 gridded emissions are now available via a Colorado State
    • Contact Rodger Ames at Rodger.Ames@colostate.edu to get access to data
  • Boyer (TCEQ) obtained the MEGANv2-BEIS3 hybrid code from Texas A&M
    • In order to use this code for MEGANv3, software modifications are needed
    • CARB indicated that this Texas A&M code was used because MEGANv2 estimates could not be used in their estimation but this code allowed for a hybrid approach
    • Recommendation at this time is to table this code for possible future use but we do not have time to do hybrid modeling at this time
  • Kosty and Boyer (TCEQ) presented QA/comparisons for MEGANv3-BEIS3 for month of July 2016
    • Workgroup discussion included differences in diurnal profile of isoprene; investigation needed
      • MEGANv3 emissions start earlier and end later vs. BEIS3
      • CARB asked if TCEQ used stress adjustments in MEGANv3 run
        • TCEQ did not; CARB indicated that this functionality is new and they have done some sensitivities with it but not used it in modeling
        • Workgroup should learn more about these adjustments but no plan to use them in 2016 modeling at this time
    • Workgroup thought differences in LAI and landuse used in the two models needs to be investigated
      • Unsure how to extract landuse info out of MEGANv3 to compare vs. BELD4 (BEIS3 input)
    • Tom Moore will contact Ramboll about answering our MEGANv3 questions
    • Boyer to compile list of MEGANv3 questions from workgroup to give to Ramboll/MEGANv3 staff
    • MEGANv3 is in general is higher than BEIS3 for most states in July
      • Could be landuse, emissions factor or use of meteorological data differences
    • Boyer trying to obtain isoprene flux measurements from MN contact
    • Will need EPA ORD involved for BEIS3/BELD4 questions that come up
    • MEGANv3 does some sort of a MODIS-adjustment to landuse for urban areas; need more info
    • QA of more months needed
  • Survey about which months to evaluate available; please complete ASAP
  • Next call scheduled for May 15 at 330PM ET

Action Items

  • Action Item: MEGANv3 and BEIS3 gridded emissions are now available via a Colorado State (ALL)
    • Contact Rodger Ames at Rodger.Ames@colostate.edu to get access to data
  • Action Item: Workgroup discussion included differences in diurnal profile of isoprene; investigation needed (Vukovich, Boyer)
  • Action Item: Workgroup should learn more about veg stress adjustments in MEGANv3 (read documentation and ask Ramboll)
  • Action Item: Workgroup thought differences in LAI and landuse used in the two models needs to be investigated (TCEQ, EPA, ask Ramboll)
  • Action Item: Tom Moore will contact Ramboll about answering our MEGANv3 questions
    • Boyer to compile list of MEGANv3 questions from workgroup to give to Ramboll/MEGANv3 staff
  • Action Item: Boyer to obtain isoprene flux measurements from MN contact
  • Action Item: QA of more months needed (ALL)
  • Action Item: Survey about which months to evaluate available; please complete ASAP (ALL)

March 20, 2018

Attendees

Co-leads: Jeff Vukovich (USEPA), Doug Boyer (TCEQ),

Byeong Kim (GA EPD), Miranda Kosty (TCEQ), Stephen Coe (Montana),

Agenda

  • BEIS3 update (Vukovich)
  • MEGANv3 update (Boyer)
  • MEGANv2.1 simulation for 2016 possible?
  • WRF meteorological evaluation update
  • Who will carry out QA and associated evaluation?
  • Next call April 17

Minutes/Notes

  • Review minutes from last call
    • WRF evaluation by USEPA still ongoing; expect it by next call
    • Jeremy Avise provided Texas A&M paper on MEGAN-BEIS3 paper
      • Doug Boyer to followup about possibly obtaining code used for that paper
  • Moved future calls to 330PM ET on third Tuesday each month
  • QA steps assembled doc was discussed
    • try to use similar software at different organizations to do these QA steps
  • All agree need AQ modeling to help evaluate biogenic emissions datasets
  • Doug Boyer (TCEQ) is tracking down sources of 2016 isoprene measurements (fluxes?) through Michigan and Minnesota contacts
  • LADCO is going to be doing some AQ simulations some point soon for 2016
    • Jeff will see if they have interest in MEGANv3 data to possibly do a sensitivity run with both biogenic models
  • TCEQ indicated they will be doing some 2016 regional haze modeling at some point possibly this year
  • Discussed focusing on 4 to 5 week-long episodes that saw high O3 events
    • Byeong (GA) provided dates during call
    • GA will provide a daily report generated by his group that briefly summarizes O3 events in 2016
    • We have possible dates from TCEQ, Arizona, GA, EPA
    • Will ask CARB if they have dates of interest
    • Will use Doodle poll to finalize the selection of these dates
    • if time permits, can look at more episodes
  • Byeong (GA) wants to get access to MEGANv3 and BEIS3 output files
    • EPA will see about setting up a way to exchange these files with GA/TX/USEPA
  • Vukovich gave an update on BEIS3 documentation and input data now available on Google Drive
  • Boyer gave an update on MEGANv3
    • MEGANv3 annual simulation complete
    • Fixed NOx EF bug
    • Possible that MEGANv3 gets updated this year
    • Vukovich wanted to more info on MEGANv3 input landuse
    • TCEQ may look into ways to display/share MEGANv3 emissions factors and leaf-area-index info
  • Byeong raised question about the differences in how solar radiation is treated in both models
  • Vukovich indicated he would look into running MEGANv2.1 for 2016 for comparison
  • MEGANv3 source code is available to the workgroup

Action Items

  • Future meetings 330PM ET on third Tuesday of month
  • Boyer (TCEQ) to contact Texas A&M Wang 2017 paper about obtaining source code used to input BEIS3 emissions factors into MEGAN
  • Vukovich (USEPA) to ask CARB about 2016 monitoring data that can help with model evaluation
  • Vukovich to talk to LADCO about using MEGANv3 in their upcoming 2016 AQ modeling runs
  • Byeong to provide GAEPD report about 2016 ozone season
  • EPA to find a ftp site solution for GA-TCEQ-EPA and others in workgroup to share model output data
  • Use poll to finalize 4 to 5 week-long episodes to focus our emissions comparisons
  • Boyer to provide gridded landuse info used in MEGANv3
  • TCEQ and EPA to begin coordinating QA efforts with GAEPD and others participating

February 20, 2018

Attendees

Co-leads: Jeff Vukovich (USEPA), Doug Boyer (TCEQ),

Brian Sullins (Alabama DEM), Miranda Kosty (TCEQ), Susanne Cotty (PA Region), Tom Moore (Westar-WRAP), Jeremy Avise (CARB), Jiang Majong (CARB)

Agenda

  • Roll Call
  • Review Minutes from Kickoff Call
  • BEIS3 update (Vukovich)
  • MEGANv3 update (Boyer)
  • List of possible QA steps from members
  • MEGANv2.1 simulation for 2016 possible?
  • Other agenda items

Minutes/Notes

  • Review minutes from last call
  • Action Items from last call addressed/reviewed:
    • WRF evaluation tech memo still a work in progress; will be available soon
    • BEIS3 tech memo (Vukovich) almost ready for workgroup to examine
    • CARB provide MEGAN comparison time series plots to the work group
    • QA steps were received from TCEQ and USEPA
    • Soil/fertilization NOx investigation added to the workgroup charge document
  • Vukovich gave an update on the BEIS3 model QA and documentation
  • Boyer (TCEQ) provided an update on MEGANv3: processed for specific days in July 2016 (July 17-19)
    • TCEQ mentioned that other days in 2016 could be examined
    • EPA provided BEIS3 output for these days as well
    • TCEQ and CARB have had some contact with Alex Guenther (author of MEGAN)
    • TCEQ found that nitric oxide emissions were = 0 in MEGANv3
      • PhD student is working on new soil NOx WRF-CHEM-MEGAN version
      • Then will move this algorithm to MEGANv3 as well
      • Timing of this new soil NOx algorithm being available in MEGANv3 unknown
      • MEGANv3 may only have been evaluated in Texas region due to funding limitations
      • Discussion regarding concerns about MEGANv3 (pretty early version); Soil NOx algorithm issues
    • TCEQ listed some options with MEGANv3
      • options run MEGANv3 not use soil NOx, use MEGANv3 + BEIS NO
      • Run MEGANv2.1 for another option since MEGANv3 status unknown
  • Group mentioned that biogenic emissions modeling evaluations include running the AQ model
  • Discussion on landuse improvements; Pima Co can provide updated landuse data maybe this summer
  • Tom Moore wanted to know if there are possible eco-region landuse improvements available
  • Discussion about number of landuse types in BEIS3 and MEGANv3 and how to map them to landuse datasets

Action Items

  • Action Item: Vukovich to assemble list of QA steps into document and provide to workgroup for further examination/edits
  • Action Item: WRF evaluation tech memo will be forwarded to workgroup when it becomes available (USEPA)
  • Action Item: BEIS3 tech memo and BEIS3 input data to be shared with workgroup (USEPA)
  • Action Item: Workgroup to provide a list of days/weeks that we should focus on where perhaps elevated ozone occurred in your region
  • Action Item: Jeremy to ask Alex Guenther about our timeline; MEGANv3 updates (soil NOx only update?)
  • Action Item: CARB and TCEQ to investigate if they can run MEGANv2.1 (USEPA may be backup plan)
  • Action Item: Jeff to ask AQMG about air quality modeling plans for year 2016
  • Action Item: Vukovich to ask EPA ORD about eco-region updates or any other possible upcoming landuse updates
  • Action Item: CARB to try track down the MEGAN mapping to BEIS3 landuse paper (TX A&M)

Next Call: Tues Mar 20, 2PM EST

January 23, 2018

Attendees

Co-leads: Jeff Vukovich (USEPA), Doug Boyer (TCEQ),

Brian Sullins (Alabama DEM), Byeong Kim (GA EPD), Miranda Kosty (TCEQ), Stephen Coe (Montana), Susanne Cotty (PA Region), Sylvia Vanderspek (CARB), Tom Moore (Westar-WRAP), Jeremy Avise (CARB), Jiang Majong (CARB)

Agenda

  • Introductions
  • Collaboration mission: Develop a year 2016 Emissions Modeling Platform
  • Review draft Charge Document for the Workgroup
  • BEIS3: 2016 emissions available
  • MEGAN version 3 - new version and plans
  • Need to set up regular meeting times for workgroup

Minutes/Notes

  • Overview of WG, 2016 EMP, and member introductions completed
    • Members were from states of CA, AZ, MT, GA, AL, TX, WRAP
      • members had various types of experience with biogenic emissions and AQ modeling
  • Reviewed Biogenic WG charge document
    • Discussion centered around the need to find field studies or sources of monitoring data to help with evaluation
      • Field studies: ORD
      • CARB (Jeremy): 2011 ISOP airborne monitoring campaign. Carried out comparisons with MEGANv2 and MEGANv3
      • NASA DISCOVER studies: data may be useful
    • Need list of QA steps for analyzing biogenic emissions datasets
    • Add investigation of fertilizer-nitric oxide (NO) emissions to charge document
    • Should we be concerned about Urban vegetation for biogenic emissions?
      • MEGAN has extra modeling step for incorporating urban veg (LAI incorporated)
    • Modeling resolution of 12km for this workgroup; some states may want to go to 4km
    • Request for evaluation tech doc of the 2016 WRF simulation
    • Tom Moore (WRAP) and Jeremy Avise (CARB) provided various biogenic emissions references for the workgroup to examine when possible.
  • Jeff Vukovich gave an overview of the BEIS3 simulation already carried out for year 2016
    • Technical documentation will be available soon on the BEIS3 simulation
    • Annual simulation at 12km resolution was completed for Carbon Bond 6 AQ modeling
  • Doug Boyer gave an overview of the MEGANv3
    • TCEQ sent the drives to LADCO to get MCIP data for 2016
    • See all the MEGANv3 tech docs Doug has provided on Biogenics WG Google site
    • GA and USEPA: would like to see April-October emissions from MEGANv3
  • Will have monthly conference calls on the 3rd Tuesday of every month at 2PM EST

Action Items

  • Members send list of QA steps they use when analyzing biogenic emissions datasets. Please provide these QA steps to the co-chairs by Friday February 9, 2018 (all possible WG members)
  • CARB to send plots of their MEGAN/BEIS3 related work (Jeremy)
  • Add fertilizer investigation to charge document (Vukovich)
  • Investigate if a model evaluation tech doc exists for the year 2016 WRF simulation conducted by USEPA (Vukovich, USEPA)
  • Provide MEGANv3 results for July 2016 or some part of July by next call (Boyer)
  • Provide BEIS3 technical documentation of the 2016 modeling (Vukovich)
  • Workgroup members are encouraged to review all MEGANv3 and BEIS3 documentation/results provided before this kickoff call and after the call (All WG members)