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331 | 331 | to a set of destinations. Similarly, the tool allows to compute |
332 | 332 | the carbon footprint of a larger set of trips, corresponding to a |
333 | 333 | conference, a meeting and so on. For this, the city of departure |
334 | - for each participant to the conference has first to be provided. | |
334 | + for each participant to the event has first to be provided. | |
335 | 335 | If multiple destination cities are provided, the tool ranks those |
336 | 336 | cities according to the associated carbon footprint. |
337 | 337 | |
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342 | 342 | Furthermore, it provides an estimate based on data from six |
343 | 343 | different methods, whose estimates can differ significantly. If |
344 | 344 | more than one method is selected by the user, the tool returns |
345 | - the mean of the estimates of all selected method. | |
345 | + the mean of the estimates of all selected methods. | |
346 | 346 | |
347 | 347 | - title: How does the tool work? |
348 | 348 | content: | |
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364 | 364 | content: | |
365 | 365 | The tool incorporates six different methods, among the most |
366 | 366 | widely used, and for which the methodology used is |
367 | - documented. Providing more than one method enables to get | |
367 | + documented (see additional resources later). | |
368 | + Providing more than one method enables to get | |
368 | 369 | a mean value, while illustrating the significant differences in |
369 | 370 | their estimates. In alphabetic order, the data considered are |
370 | 371 | from ADEME: the French Environment & Energy Management |
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437 | 438 | |
438 | 439 | - title: Accounting for train emission |
439 | 440 | content: | |
440 | - The minimum distance for flying is an input to be provided by | |
441 | + The minimum distance for flying is an input to be selected by | |
441 | 442 | the user (it is set to 300 km by default). Below the minimum |
442 | 443 | distance for flying, it is assumed that train is used. The tool |
443 | 444 | then computes the travel footprint associated with train. The |
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473 | 474 | or an estimate for a conference, meeting and so on. In the |
474 | 475 | former case, the “origin” city is unique and the “destination” |
475 | 476 | cities may be multiple. The tool returns the carbon dioxide |
476 | - equivalent emission for each city of destination. | |
477 | - In the later case, the “origin” cities are multiple | |
477 | + equivalent emission for each city of destination. The tool can thus | |
478 | + be run also for an organization interested to know about its travel | |
479 | + footprint, in which case the "origin" city is the city from which | |
480 | + employees travel. In the later case, the “origin” cities are multiple | |
478 | 481 | (i.e. the cities from which the participants to the conference |
479 | 482 | depart from), and the “destination” city may be a single host city |
480 | 483 | or multiple host cities if the user wants to compare their |
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482 | 485 | the carbon dioxide equivalent for each city of origin. If multiple |
483 | 486 | destinations are provided the tool returns the carbon dioxide |
484 | 487 | equivalent emission summed over all cities of |
485 | - origin and for each city of destination. The cumulative distance to | |
486 | - each city of destination is also provided. | |
488 | + origin and for each city of destination. The cumulative round trip | |
489 | + distance to each city of destination is also provided. | |
487 | 490 | |
488 | 491 | The result pages provides a summary plot which can be |
489 | - downloaded, as well as a csv and raw yaml file. The csv file | |
490 | - lists the name of the city as in the form, the address to which it | |
492 | + downloaded, as well as a csv and raw yaml file, which can be used for | |
493 | + further processing. The csv file lists the name of the | |
494 | + city as in the form, the address to which it | |
491 | 495 | was geolocated, the carbon dioxide emission (in kg), the |
492 | 496 | distance travelled, the number of trips possible by train (i.e. |
493 | 497 | when the distance is less than the minimum flying distance, |
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528 | 532 | |
529 | 533 | - title: Reference |
530 | 534 | content: | |
531 | - Results from the tool may reference to Barret (2019, in preparation). | |
535 | + Results from the tool may reference to Barret (2019, The travel | |
536 | + footprint associated with the development of the Athena | |
537 | + X-ray Integral Field Unit, in preparation). | |
532 | 538 | |
533 | 539 | - title: Original motivation |
534 | 540 | content: | |
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551 | 557 | further improved to easily compute the travel footprint associated |
552 | 558 | with individual traveling or with the organization of events, involving |
553 | 559 | a large number of travels. Finally, by comparing different, |
554 | - widely used methods, providing so different estimates, I would | |
555 | - expect to raise awareness within the scientific community | |
560 | + widely used methods, providing so different estimates, the tool is | |
561 | + expected to raise awareness within the scientific community | |
556 | 562 | (and hopefully the authorities and medias) |
557 | 563 | about the lack of regulations or framework on the critical |
558 | 564 | matter of estimating aircraft emissions. |
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560 | 566 | - title: Concluding note |
561 | 567 | content: | |
562 | 568 | As a personal note, I would like to stress that, as a scientist, I |
563 | - find it worrying or even shocking that there are no standards | |
569 | + find it very worrying that there are no standards | |
564 | 570 | for computing the flight emissions, while we know that flight |
565 | 571 | travels, releasing carbon dioxide at high altitudes, contribute to |
566 | 572 | global warming. To take an example, the International Civil |
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578 | 584 | to be between 2 and 4. Why ICAO is using 1? This is just an |
579 | 585 | example, which clearly show the urgent need to agree on a |
580 | 586 | common methodology accepted by all parties in computing |
581 | - flight emission. May be this tool will help to raise | |
587 | + flight emission. May this tool help to raise | |
582 | 588 | awareness on this issue. |
583 | 589 | |
584 | 590 | - title: Additional resources | ... | ... |