AIMERG: a new Asian precipitation dataset (0.1°/half-hourly, 2000–2015) by calibrating the GPM-era IMERG at a daily scale using APHRODITE

Ma, Ziqiang; Xu, Jintao; Zhu, Siyu; Yang, Jun; Tang, Guoqiang; Yang, Yuanjian; Shi, Zhou; Hong, Yang

doi:https://doi.org/10.5194/essd-12-1525-2020

Articles | Volume 12, issue 3

https://doi.org/10.5194/essd-12-1525-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/essd-12-1525-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 3

Data description paper

|

08 Jul 2020

Data description paper |

| 08 Jul 2020

AIMERG: a new Asian precipitation dataset (0.1°/half-hourly, 2000–2015) by calibrating the GPM-era IMERG at a daily scale using APHRODITE

Ziqiang Ma, Jintao Xu, Siyu Zhu, Jun Yang, Guoqiang Tang, Yuanjian Yang, Zhou Shi, and Yang Hong

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Final revised paper (published on 08 Jul 2020)
Preprint (discussion started on 10 Feb 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'A good dataset presented well and will be useful in future', Asim Biswas, 28 Feb 2020
- RC2: 'Mistake in submitting the report', Asim Biswas, 28 Feb 2020
  - AC1: 'Author Comments Response to RC3', Ziqiang Ma, 08 May 2020
- AC1: 'Author Comments Response to RC3', Ziqiang Ma, 08 May 2020
RC3: 'A good dataset', Asim Biswas, 09 Apr 2020
- AC1: 'Author Comments Response to RC3', Ziqiang Ma, 08 May 2020
RC4: 'Useful dataset for hydrologic modeling', Anonymous Referee #2, 23 Apr 2020
- AC2: 'Author Comments Response to RC4', Ziqiang Ma, 08 May 2020
AC2: 'Author Comments Response to RC4', Ziqiang Ma, 08 May 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Ziqiang Ma on behalf of the Authors (11 May 2020) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (16 May 2020) by David Carlson

Very many improvements from original manuscript, thank you. Author team will need to work carefully with Copernicus publishing team during proof-reading, to correct remaining language-based inconsistencies. Authors may need to consider consulting with a native English technical writer.

Small additional changes:

Line 185: "five datasets used in this study" but Table 1 lists only 4? The rain gauge from hydrological network seem missing? Mentioned again as an independent evaluation data set at lines 373, 374, etc?

Line. 242 and Table 2: Term MAE in text does not (but should) match term ME in Table 2?

Line 269, Figure 2: Units in this figure? mm/day? mm/month? mm/year?

Lines 264-266 - "Though AIMERG is smaller than IMERG over most regions, there are still some areas where the volumes of AIMERG are larger than those of IMERG, e.g., in western Tibetan Plateau, Middle East, and along the western coast of India". Figure 2d does not show this pattern?

Figure 2: confusing to have background ocean (= bathymetry?) included in this and other figures. Better to mask the ocean with no or white-only color? Or solid color as in Figure 11?

Line 395, Figure 10 especially hourly insets remains hard to read at any reasonable zoom level.

Line 411, Figure 11: No explanation for top three panels (a, b, c).

Line 458, Figure 13: Units for panel c of Figure 13 should be ratio, not mm/month?

Line 535, Figure 14: Here a reader needs to go back and forth between Figure 11 and Figure 14 to understand the differences between AIMERG and GSMaP for this particular typhoon. Authors should provide a better, easier comparison?

Lines 540 to 542- recommendations for other regions. Readers may agree with this statement but do authors feel confident about availability or quality of high-resolution gauge data for these other regions? For Japan, perhaps yes? Monsoon India, perhaps? Middle East perhaps not? Authors, as regional experts, can provide some guidance here?

Page 57, list of acronyms, welcome helpful addition!

Difficult, challenging work, requires some final 'smoothing' of language. Overall, a good product for ESSD.

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AR by Ziqiang Ma on behalf of the Authors (22 May 2020) Author's response Manuscript

ED: Publish as is (29 May 2020) by David Carlson

AR by Ziqiang Ma on behalf of the Authors (01 Jun 2020) Author's response Manuscript

Short summary

Focusing on the potential drawbacks in generating the state-of-the-art IMERG data in both the TRMM and GPM era, a new daily calibration algorithm on IMERG was proposed, as well as a new AIMERG precipitation dataset (0.1°/half-hourly, 2000–2015, Asia) with better quality than IMERG for Asian scientific research and applications. The proposed daily calibration algorithm for GPM is promising and applicable in generating the future IMERG in either an operational scheme or a retrospective manner.