[Bldg-sim] "Maslow's" hierarchy of calibration

[Owen Gray]

This might be more specific advice for university members of this group looking at calibrating a model from a campus, but usually kicking around somewhere on the site there will be a weather station logging data. Either from the estates team itself, a particular research/teaching department (geography and meteorology departments can't resist a good weather station).

 A quick email to the estates teams usually will yield the right contact you need to speak to.

Data might require some fiddling around with and cleaning up, but the logged historic data can be really helpful when synced correctly with your sensor data.

Cheers,

Owen
________________________________
From: Bldg-sim <bldg-sim-bounces at lists.onebuilding.org> on behalf of Dru Crawley via Bldg-sim <bldg-sim at lists.onebuilding.org>
Sent: Friday, July 26, 2024 16:47
To: chris.malcolm.yates at gmail.com <chris.malcolm.yates at gmail.com>
Cc: Samuelson, Holly <hsamuelson at gsd.harvard.edu>; bldg-sim at lists.onebuilding.org <bldg-sim at lists.onebuilding.org>
Subject: Re: [Bldg-sim] "Maslow's" hierarchy of calibration

There are high-resolution free data sources now for MYs (others call them AMYs), including:

ERA5-Land from Europe's ECMWF (https://www.ecmwf.int/en/era5-land)
  (Reanalysis data from 1950 to present at 9 km resolution)

 If you want ERA5 data in EPW, Oikolab (https://oikolab.com<https://oikolab.com/>) provides data for a fee.

NOAA NCEI ISD Integrated Surface Data (https://www.ncei.noaa.gov/products/land-based-station/integrated-surface-database)
  (Global database of weather station-based data from 1900 to present, replaced soon by GHCN.)

NOAA NCEI GHCN Global Historical Climate Network (https://www.ncei.noaa.gov/products/global-historical-climatology-network-hourly)
  (Global database replacing the ISD, more extensive data, fixed format)

Climate.OneBuilding  (https//:climate.onebuilding.org<http://climate.onebuilding.org/>) uses a combination of ISD and ERA5 for its TMYx -- new data through 2023 for more than 20,000 stations globally coming soon.


On Fri, Jul 26, 2024 at 10:54 AM Chris Yates via Bldg-sim <bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>> wrote:

Hi Holly,

That’s an interesting one. Before access to much improved, higher quality AMY data calibration may have been undertaken against TMY or EWY data. If calibrating to monthly energy rather than hourly, presumably date-sensitivity and things like DST are not as big a deal?

I agree with you that dates are fundamental according the standards.

Chris



From: Bldg-sim <bldg-sim-bounces at lists.onebuilding.org<mailto:bldg-sim-bounces at lists.onebuilding.org>> On Behalf Of Samuelson, Holly via Bldg-sim
Sent: Thursday, July 25, 2024 9:48 PM
To: bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>
Subject: Re: [Bldg-sim] "Maslow's" hierarchy of calibration



Chris,

This might be a no-brainer, but...

Calibration step one: ensure the weather file used corresponds to the dates of the measured data.

Best,

Holly





Holly W. Samuelson | DDes | Registered Architect

Associate Professor | Harvard Graduate School of Design

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