Increased precipitation in Antarctica will prevent global sea level rise
Is it true that increased precipitation in Antarctica will prevent global sea level rise?
No. While increased snowfall in parts of Antarctica can temporarily offset regional ice losses, overall mass loss from the continent currently outpaces accumulation. Consequently, increased Antarctic precipitation does not prevent global sea level rise.
Verdict: REFUTED · 3 sources for, 4 against · Last checked
The claim asserts that increased precipitation in Antarctica will prevent global sea level rise. While several studies indicate that snow accumulation (surface mass balance) can partially compensate for ice losses or temporarily moderate short-term rates of mass loss (e.g., Shepherd et al., 2020; Medley et al., 2012; Bergman et al., 2023), comprehensive mass-balance assessments and sea-level budgets (e.g., Cazenave et al., 2018; Cazenave & Lemoine, 2009) show that overall ice sheet mass losses significantly outpace gains. Furthermore, continent-wide precipitation has not shown the dramatic, sustained increases required to offset ongoing dynamic ice discharges and melting (Monaghan et al., 2006). Therefore, the claim is refuted by the weight of the evidence.
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Smith, B., Fricker, H. A., Gardner, A., Medley, B., Nilsson, J., Paolo, F., Holschuh, N., Adusumilli, S., Brunt, K. M., Csathó, B. M., Harbeck, K., Markus, T., Neumann, T., Siegfried, M. R., & Zwally, H. J. (2020). Pervasive ice sheet mass loss reflects competing ocean and atmosphere processes. doi.org. https://doi.org/10.1126/science.aaz5845
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Smith, B., Fricker, H. A., Gardner, A., Medley, B., Nilsson, J., Paolo, F., Holschuh, N., Adusumilli, S., Brunt, K. M., Csathó, B. M., Harbeck, K., Markus, T., Neumann, T., Siegfried, M. R., & Zwally, H. J. (2020). Pervasive ice sheet mass loss reflects competing ocean and atmosphere processes. doi.org. https://doi.org/10.1126/science.aaz5845
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Boening, C., Lebsock, M., Landerer, F. W., & Stephens, G. L. (2012). Snowfall‐driven mass change on the East Antarctic ice sheet. doi.org. https://doi.org/10.1029/2012gl053316
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Davison, B., Hogg, A., Rigby, R., Veldhuijsen, S., Wessem, J. M. v., Broeke, M. R. v. d., Holland, P., Selley, H., & Dutrieux, P. (2023). Sea level rise from West Antarctic mass loss significantly modified by large snowfall anomalies. doi.org. https://doi.org/10.1038/s41467-023-36990-3
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Group, W. G. S. L. B. (2018). Global sea-level budget 1993–present. doi.org. https://doi.org/10.5194/essd-10-1551-2018
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Monaghan, A. J., Bromwich, D. H., Fogt, R. L., Wang, S., Mayewski, P. A., Dixon, D. A., Ekaykin, A., Frezzotti, M., Goodwin, I., Isaksson, E., Kaspari, S., Morgan, V., Oerter, H., Ommen, T. D. v., Veen, C. J. V. d., & Wen, J. (2006). Insignificant Change in Antarctic Snowfall Since the International Geophysical Year. doi.org. https://doi.org/10.1126/science.1128243
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Allison, I., Alley, R., Fricker, H., Thomas, R., & Warner, R. (2009). Ice sheet mass balance and sea level. doi.org. https://doi.org/10.1017/s0954102009990137
- Is it true that melting icebergs cause global sea levels to rise? SUPPORTED
- Is it true that melting sea ice increases global sea levels? SUPPORTED
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- Is it true that the rate of sea-level rise is currently accelerating? SUPPORTED
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What does the evidence say?
The claim asserts that increased precipitation in Antarctica will prevent global sea level rise. While several studies indicate that snow accumulation (surface mass balance) can partially compensate for ice losses or temporarily moderate short-term rates of mass loss (e.g., Shepherd et al., 2020; Medley et al., 2012; Bergman et al., 2023), comprehensive mass-balance assessments and sea-level budgets (e.g., Cazenave et al., 2018; Cazenave & Lemoine, 2009) show that overall ice sheet mass losses significantly outpace gains. Furthermore, continent-wide precipitation has not shown the dramatic, sustained increases required to offset ongoing dynamic ice discharges and melting (Monaghan et al., 2006). Therefore, the claim is refuted by the weight of the evidence.
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