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Some drivers push for a transition towards sustainable and integrated urban water management while involving the community in decision-making. The Transition Management framework has been used to study how to empower experiments and promote sustainable transitions. However, there is no proper recognition of how to involve the community as part of the transition processes, especially in developing countries. This paper analyses the 2007–2012 Magdalena River restoration project in Mexico City to understand community participation in water management transitions, while recognising how different social groups are involved and react to transition experiments. This research points out the difficulties that influence community participation and the necessity of addressing these difficulties while considering the heterogeneous community character. [ABSTRACT FROM AUTHOR]

New migration configurations, particularly regarding access to resources for arriving migrants in urban contexts, have emerged in Mexico. As a destination for newly arrived international immigrant populations, Mexico City has become especially important. Stranded migration situations have produced fragmented journeys for Latin American migrants who are on their way to the United States. With the strengthening of immigration containment policies and the insecurity in Mexico, the complexity of immigrant journeys has led to new ways of settling in the country, temporarily or permanently. This paper is based on empirical elements to analyze the experiences of migrants who have recently arrived in Mexico City using a perspective centred on their everyday practices in the urban space. It highlights the different tactics and strategies that migrants develop depending on the characteristics of their migration process and their need for access to resources, like housing, employment, health care, and education. We point out that, in a context of restricted access to resources or an immigration status, utilizing alternate and informal strategies in micro‐local spaces is common in the city and part of a negotiated urbanity in an unknown metropolitan environment. We argue that, despite the local intercultural policy implemented by the government of Mexico City, situations of legal precariousness and transitoriness that characterize the urban practices and patterns of incorporation into the city constrain international migrants' access to their rights. Key Messages: Under current immigration control, many migrants settle temporarily or permanently in Mexico City, challenging authorities' efforts to make local inclusive policy reforms truly effective.As settling in the city makes it necessary to activate specific strategies for accessing resources, migrants rely more on new local interactions than pre‐existing social networks or longstanding sociocultural resources.Transient situations lead to partial incorporation into the urban context and limited access to rights, so informality, marginality, and social insecurity remain salient features. [ABSTRACT FROM AUTHOR]

Our paper adds to the aging mobilities literature by addressing the need for more empirical studies in the Global South and utilizing the 2017 Household Origin-Destination Survey (HODS 2017) to broadly understand the mobility of older adults in Mexico City. We use descriptive statistics to reveal travel behavior patterns and construct a multinomial logit model to understand variations in mode choice of older adults in Mexico City. Our analysis does provide an emphasis on differences by income class, gender, and neighborhood level access to public transportation. Results uncovered transport-related inequalities as poorer older adults travel for longer periods of time compared to their wealthier peers. In terms of travel behaviors, we found that 40.5% of older adults reported using public and paid transit, 32% walked, 26.5% drove, and only 1.2% biked. Also, we learned that when older adults have access to good public transit infrastructure, they use it, regardless of car ownership status. Also, mobilities resulting from gender differences among older adults showed that older females are less likely to use structured public transit, walking, and biking in comparison to older males. Lastly we outline research limitations and recommendations for future transport policies. [ABSTRACT FROM AUTHOR]

In this paper, the authors discuss the extensive structural pounding observed in Mexico City during the September 19, 2017 earthquake. A critical review of the recommendations available for required separations between adjacent buildings in the seismic codes of Mexico City since 1966 is offered. The reasons why these recommendations have not been effectively enforced since then are also addressed. A parametric study was conducted to understand better the structural pounding phenomena for strong ground motions which have been recorded in soft soils in Mexico City during the 1985 and 2017 earthquakes. For this purpose, equivalent frame models for existing reinforced concrete and structural steel flatslab buildings with nonlinear pounding contacts were used. Some well-known proposed equations for building separations were evaluated based upon the results of these parametric studies for pounding. The evaluated equations were the ABS, SRSS and DDC rules, as well as the absolute difference combination (ADC) rule proposed by the authors. From the obtained results, it was found that the minimum building separation between adjacent buildings established in the seismic code of Mexico City should be raised to avoid strong pounding on soft soils. Also, it was found that both the DDC and ADC rules are promising in defining building separations closer to the one obtained from dynamic simulations. These equations are less conservative than the version of the absolute sum rule currently established in Mexican seismic codes. • 98.9% of the observed pounding in Mexico City occurred in the soft soils gained to the former lakes. • The height difference between adjacent structures where more pounding was observed was ±4 stories. • Gap distances required to avoid pounding in the soft soils of Mexico City could be as large as 170 cm. • The minimum distance between adjacent structures to enforce for the soft soils of Mexico City should be raised to 15 cm. • The DDC and the ADC rules could be used with confidence to assess gap distances to avoid pounding in soft soils. [ABSTRACT FROM AUTHOR]

The planetary boundary layer (PBL) height plays a major role in air quality and weather forecast studies. However, it cannot be directly measured as it can only be determined from the measured profiles of atmospheric parameters such as., temperature, moisture, and aerosol backscatter based on different retrieval mechanisms. This paper presents the PBL features such as., stable boundary layer (SBL), convective boundary layer (CBL), and residual layer (RL) detected from the microwave radiometer (MWR), mini Micro Pulse Lidar (MPL), and radiosondes (RS) and an intercomparison was done between the instruments during the period of 16 February – 31 May 2019 in Mexico City. RS were launched thrice a day during this period at 06 LST, 12 LST, and 18 LST respectively. The PBL heights comparison was classified into 3 categories: MWR-RS, mini MPL-RS, and mini MPL-MWR. The daytime CBL heights for the MWR-RS comparison correlate well (r = 0.96 at 12 LST, r = 0.88 at 18 LST) as well as RL height (r = 0.94 at 06 LST). The CBL and RL heights for the mini MPL-RS and mini MPL-MWR comparison also agree very well (0.89 < r < 0.99). Overall, the corresponding SBL height comparisons at 06 LST yielded lower agreements (r < 0.66) with the lowest correlation values for the mini MPL-MWR comparison (r = 0.39), which is likely due to the inability of the mini MPL to detect aerosol backscatter below ~120 m above ground level (agl) as well as the stability of the atmosphere, which prevents uniform mixing of the aerosol particles. [Display omitted] • Intercomparison of microwave radiometer, micro-pulse lidar and radiosondes during 3 months. • Overall good agreement in the detection of the convective and residual boundary layer heights. • Lower agreement for the stable boundary layer height. [ABSTRACT FROM AUTHOR]

This paper examines the association between the frequency of use of urban green spaces (UGS) and the subjective well-being (SWB) of Mexico City's residents during the COVID-19 pandemic. We conducted an online survey (N = 1954) regarding individuals' perceptions and use of UGS and their SWB, evaluated through the short version of the Warwick-Edinburgh mental well-being scale. Multilevel mixed-effects regression analyses were performed to investigate the association between the frequency of UGS use and SWB, including individual and municipal level characteristics as covariates. Our results suggest that respondents who used UGS once or more per week during the pandemic reported higher SWB scores (8.7%) than those with zero visits. These findings have public policy implications that could enhance the role of UGS in urban environments during times of crisis. [ABSTRACT FROM AUTHOR]